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viscoplastic analysis of lap shear solder joint

luvsharma11's picture

Hi all,

I am trying to model a solder joint in double lap shear. I am using the Modified Anand's Model. But for some reasons the analysis is not completing and does not gives any errors as well. Since I am new to abaqus, I am not able to solve this. Here is my input file:

---------------------------------------------------------------------------------------------------------------------------------------

 *Heading
** Job name: dl-3 Model name: Model-1
*Preprint, echo=NO, model=NO, history=NO, contact=NO
*Part, name=Part-1
*End Part
**  
**
** ASSEMBLY
**
*Assembly, name=Assembly
**  
*Instance, name=Part-1-1, part=Part-1
*Node
      1, -0.00700000022, 0.00700000022, 0.00700000022
      2, -0.00700000022, 0.00700000022,           0.
      3, -0.00700000022,           0.,           0.
      4, -0.00700000022,           0., 0.00700000022
      5,           0., 0.00700000022,           0.
      6,           0.,           0.,           0.
      7,           0.,           0., 0.00700000022
      8,           0., 0.00700000022, 0.00700000022
      9, -0.0399999991, -0.00600000005, 0.00700000022
     10, -0.0399999991, -0.00600000005,           0.
     11, -0.00700000022, -0.00600000005,           0.
     12, -0.00700000022, -0.00600000005, 0.00700000022
     13,           0., -0.00600000005,           0.
     14,           0., -0.00600000005, 0.00700000022
     15, -0.0399999991,           0.,           0.
     16, -0.0399999991,           0., 0.00700000022
     17, -0.00700000022, -0.0130000003,           0.
     18, -0.00700000022, -0.0130000003, 0.00700000022
     19,           0., -0.0130000003, 0.00700000022
     20,           0., -0.0130000003,           0.
     21, -0.00700000022, 0.0130000003, 0.00700000022
     22, -0.00700000022, 0.0130000003,           0.
     23, 0.0359999985, 0.00700000022, 0.00700000022
     24, 0.0359999985, 0.0130000003, 0.00700000022
     25, 0.0359999985, 0.0130000003,           0.
     26, 0.0359999985, 0.00700000022,           0.
     27, -0.00700000022, -0.0179999992,           0.
     28, -0.00700000022, -0.0179999992, 0.00700000022
     29, 0.0359999985, -0.0130000003,           0.
     30, 0.0359999985, -0.0179999992,           0.
     31, 0.0359999985, -0.0179999992, 0.00700000022
     32, 0.0359999985, -0.0130000003, 0.00700000022
     33, -0.0333999991, -0.00600000005,           0.
     34, -0.0267999992, -0.00600000005,           0.
     35, -0.0201999992, -0.00600000005,           0.
     36, -0.0136000002, -0.00600000005,           0.
     37, -0.0136000002, -0.00600000005, 0.00700000022
     38, -0.0201999992, -0.00600000005, 0.00700000022
     39, -0.0267999992, -0.00600000005, 0.00700000022
     40, -0.0333999991, -0.00600000005, 0.00700000022
     41, -0.0136000002,           0.,           0.
     42, -0.0201999992,           0.,           0.
     43, -0.0267999992,           0.,           0.
     44, -0.0333999991,           0.,           0.
     45, -0.0333999991,           0., 0.00700000022
     46, -0.0267999992,           0., 0.00700000022
     47, -0.0201999992,           0., 0.00700000022
     48, -0.0136000002,           0., 0.00700000022
     49, 0.000166666679, 0.0130000003,           0.
     50, 0.00733333314, 0.0130000003,           0.
     51, 0.0144999996, 0.0130000003,           0.
     52, 0.0216666665, 0.0130000003,           0.
     53, 0.0288333334, 0.0130000003,           0.
     54, 0.0287999995, 0.00700000022,           0.
     55, 0.0216000006, 0.00700000022,           0.
     56, 0.0143999998, 0.00700000022,           0.
     57, 0.00719999988, 0.00700000022,           0.
     58, 0.0288333334, 0.0130000003, 0.00700000022
     59, 0.0216666665, 0.0130000003, 0.00700000022
     60, 0.0144999996, 0.0130000003, 0.00700000022
     61, 0.00733333314, 0.0130000003, 0.00700000022
     62, 0.000166666679, 0.0130000003, 0.00700000022
     63, 0.00719999988, 0.00700000022, 0.00700000022
     64, 0.0143999998, 0.00700000022, 0.00700000022
     65, 0.0216000006, 0.00700000022, 0.00700000022
     66, 0.0287999995, 0.00700000022, 0.00700000022
     67, 0.000166666679, -0.0179999992, 0.00700000022
     68, 0.00733333314, -0.0179999992, 0.00700000022
     69, 0.0144999996, -0.0179999992, 0.00700000022
     70, 0.0216666665, -0.0179999992, 0.00700000022
     71, 0.0288333334, -0.0179999992, 0.00700000022
     72, 0.0287999995, -0.0130000003, 0.00700000022
     73, 0.0216000006, -0.0130000003, 0.00700000022
     74, 0.0143999998, -0.0130000003, 0.00700000022
     75, 0.00719999988, -0.0130000003, 0.00700000022
     76, 0.0288333334, -0.0179999992,           0.
     77, 0.0216666665, -0.0179999992,           0.
     78, 0.0144999996, -0.0179999992,           0.
     79, 0.00733333314, -0.0179999992,           0.
     80, 0.000166666679, -0.0179999992,           0.
     81, 0.00719999988, -0.0130000003,           0.
     82, 0.0143999998, -0.0130000003,           0.
     83, 0.0216000006, -0.0130000003,           0.
     84, 0.0287999995, -0.0130000003,           0.
     85,           0., 0.00350000011, 0.00700000022
     86,           0.,           0., 0.00350000011
     87,           0., 0.00350000011,           0.
     88,           0., 0.00700000022, 0.00350000011
     89, -0.00700000022, 0.00700000022, 0.00350000011
     90, -0.00700000022, 0.00350000011,           0.
     91, -0.00700000022,           0., 0.00350000011
     92, -0.00700000022, 0.00350000011, 0.00700000022
     93, -0.00350000011, 0.00700000022,           0.
     94, -0.00350000011, 0.00700000022, 0.00700000022
     95, -0.00350000011,           0.,           0.
     96, -0.00350000011,           0., 0.00700000022
     97, -0.0366999991,           0., 0.00700000022
     98, -0.0333999991,           0., 0.00350000011
     99, -0.0366999991,           0.,           0.
    100, -0.0399999991,           0., 0.00350000011
    101, -0.0399999991, -0.00600000005, 0.00350000011
    102, -0.0366999991, -0.00600000005,           0.
    103, -0.0333999991, -0.00600000005, 0.00350000011
    104, -0.0366999991, -0.00600000005, 0.00700000022
    105, -0.0399999991, -0.00300000003,           0.
    106, -0.0399999991, -0.00300000003, 0.00700000022
    107, -0.0333999991, -0.00300000003,           0.
    108, -0.0333999991, -0.00300000003, 0.00700000022
    109, -0.0300999992,           0., 0.00700000022
    110, -0.0267999992,           0., 0.00350000011
    111, -0.0300999992,           0.,           0.
    112, -0.0300999992, -0.00600000005,           0.
    113, -0.0267999992, -0.00600000005, 0.00350000011
    114, -0.0300999992, -0.00600000005, 0.00700000022
    115, -0.0267999992, -0.00300000003,           0.
    116, -0.0267999992, -0.00300000003, 0.00700000022
    117, -0.0234999992,           0., 0.00700000022
    118, -0.0201999992,           0., 0.00350000011
    119, -0.0234999992,           0.,           0.
    120, -0.0234999992, -0.00600000005,           0.
    121, -0.0201999992, -0.00600000005, 0.00350000011
    122, -0.0234999992, -0.00600000005, 0.00700000022
    123, -0.0201999992, -0.00300000003,           0.
    124, -0.0201999992, -0.00300000003, 0.00700000022
    125, -0.0168999992,           0., 0.00700000022
    126, -0.0136000002,           0., 0.00350000011
    127, -0.0168999992,           0.,           0.
    128, -0.0168999992, -0.00600000005,           0.
    129, -0.0136000002, -0.00600000005, 0.00350000011
    130, -0.0168999992, -0.00600000005, 0.00700000022
    131, -0.0136000002, -0.00300000003,           0.
    132, -0.0136000002, -0.00300000003, 0.00700000022
    133, -0.0103000002,           0., 0.00700000022
    134, -0.0103000002,           0.,           0.
    135, -0.0103000002, -0.00600000005,           0.
    136, -0.00700000022, -0.00600000005, 0.00350000011
    137, -0.0103000002, -0.00600000005, 0.00700000022
    138, -0.00700000022, -0.00300000003,           0.
    139, -0.00700000022, -0.00300000003, 0.00700000022
    140, -0.00350000011, -0.00600000005,           0.
    141,           0., -0.00600000005, 0.00350000011
    142, -0.00350000011, -0.00600000005, 0.00700000022
    143,           0., -0.00300000003,           0.
    144,           0., -0.00300000003, 0.00700000022
    145,           0., -0.00949999969,           0.
    146,           0., -0.00949999969, 0.00700000022
    147,           0., -0.0130000003, 0.00350000011
    148, -0.00700000022, -0.0130000003, 0.00350000011
    149, -0.00700000022, -0.00949999969, 0.00700000022
    150, -0.00700000022, -0.00949999969,           0.
    151, -0.00350000011, -0.0130000003, 0.00700000022
    152, -0.00350000011, -0.0130000003,           0.
    153,  8.33333397e-05, 0.00999999978,           0.
    154, 0.000166666679, 0.0130000003, 0.00350000011
    155,  8.33333397e-05, 0.00999999978, 0.00700000022
    156, -0.00700000022, 0.00999999978, 0.00700000022
    157, -0.00700000022, 0.0130000003, 0.00350000011
    158, -0.00700000022, 0.00999999978,           0.
    159, -0.00341666676, 0.0130000003, 0.00700000022
    160, -0.00341666676, 0.0130000003,           0.
    161, 0.00726666674, 0.00999999978,           0.
    162, 0.00733333314, 0.0130000003, 0.00350000011
    163, 0.00726666674, 0.00999999978, 0.00700000022
    164, 0.00719999988, 0.00700000022, 0.00350000011
    165, 0.00359999994, 0.00700000022, 0.00700000022
    166, 0.00359999994, 0.00700000022,           0.
    167, 0.00374999992, 0.0130000003, 0.00700000022
    168, 0.00374999992, 0.0130000003,           0.
    169, 0.0144499997, 0.00999999978,           0.
    170, 0.0144999996, 0.0130000003, 0.00350000011
    171, 0.0144499997, 0.00999999978, 0.00700000022
    172, 0.0143999998, 0.00700000022, 0.00350000011
    173, 0.0108000003, 0.00700000022, 0.00700000022
    174, 0.0108000003, 0.00700000022,           0.
    175, 0.0109166661, 0.0130000003, 0.00700000022
    176, 0.0109166661, 0.0130000003,           0.
    177, 0.0216333345, 0.00999999978,           0.
    178, 0.0216666665, 0.0130000003, 0.00350000011
    179, 0.0216333345, 0.00999999978, 0.00700000022
    180, 0.0216000006, 0.00700000022, 0.00350000011
    181, 0.0179999992, 0.00700000022, 0.00700000022
    182, 0.0179999992, 0.00700000022,           0.
    183,  0.018083334, 0.0130000003, 0.00700000022
    184,  0.018083334, 0.0130000003,           0.
    185, 0.0288166665, 0.00999999978,           0.
    186, 0.0288333334, 0.0130000003, 0.00350000011
    187, 0.0288166665, 0.00999999978, 0.00700000022
    188, 0.0287999995, 0.00700000022, 0.00350000011
    189,       0.0252, 0.00700000022, 0.00700000022
    190,       0.0252, 0.00700000022,           0.
    191,  0.025249999, 0.0130000003, 0.00700000022
    192,  0.025249999, 0.0130000003,           0.
    193, 0.0359999985, 0.00999999978,           0.
    194, 0.0359999985, 0.0130000003, 0.00350000011
    195, 0.0359999985, 0.00999999978, 0.00700000022
    196, 0.0359999985, 0.00700000022, 0.00350000011
    197, 0.0324000008, 0.00700000022, 0.00700000022
    198, 0.0324000008, 0.00700000022,           0.
    199, 0.0324166678, 0.0130000003, 0.00700000022
    200, 0.0324166678, 0.0130000003,           0.
    201,  8.33333397e-05, -0.0154999997, 0.00700000022
    202, 0.000166666679, -0.0179999992, 0.00350000011
    203,  8.33333397e-05, -0.0154999997,           0.
    204, -0.00700000022, -0.0154999997,           0.
    205, -0.00700000022, -0.0179999992, 0.00350000011
    206, -0.00700000022, -0.0154999997, 0.00700000022
    207, -0.00341666676, -0.0179999992,           0.
    208, -0.00341666676, -0.0179999992, 0.00700000022
    209, 0.00726666674, -0.0154999997, 0.00700000022
    210, 0.00733333314, -0.0179999992, 0.00350000011
    211, 0.00726666674, -0.0154999997,           0.
    212, 0.00719999988, -0.0130000003, 0.00350000011
    213, 0.00359999994, -0.0130000003,           0.
    214, 0.00359999994, -0.0130000003, 0.00700000022
    215, 0.00374999992, -0.0179999992,           0.
    216, 0.00374999992, -0.0179999992, 0.00700000022
    217, 0.0144499997, -0.0154999997, 0.00700000022
    218, 0.0144999996, -0.0179999992, 0.00350000011
    219, 0.0144499997, -0.0154999997,           0.
    220, 0.0143999998, -0.0130000003, 0.00350000011
    221, 0.0108000003, -0.0130000003,           0.
    222, 0.0108000003, -0.0130000003, 0.00700000022
    223, 0.0109166661, -0.0179999992,           0.
    224, 0.0109166661, -0.0179999992, 0.00700000022
    225, 0.0216333345, -0.0154999997, 0.00700000022
    226, 0.0216666665, -0.0179999992, 0.00350000011
    227, 0.0216333345, -0.0154999997,           0.
    228, 0.0216000006, -0.0130000003, 0.00350000011
    229, 0.0179999992, -0.0130000003,           0.
    230, 0.0179999992, -0.0130000003, 0.00700000022
    231,  0.018083334, -0.0179999992,           0.
    232,  0.018083334, -0.0179999992, 0.00700000022
    233, 0.0288166665, -0.0154999997, 0.00700000022
    234, 0.0288333334, -0.0179999992, 0.00350000011
    235, 0.0288166665, -0.0154999997,           0.
    236, 0.0287999995, -0.0130000003, 0.00350000011
    237,       0.0252, -0.0130000003,           0.
    238,       0.0252, -0.0130000003, 0.00700000022
    239,  0.025249999, -0.0179999992,           0.
    240,  0.025249999, -0.0179999992, 0.00700000022
    241, 0.0359999985, -0.0154999997, 0.00700000022
    242, 0.0359999985, -0.0179999992, 0.00350000011
    243, 0.0359999985, -0.0154999997,           0.
    244, 0.0359999985, -0.0130000003, 0.00350000011
    245, 0.0324000008, -0.0130000003,           0.
    246, 0.0324000008, -0.0130000003, 0.00700000022
    247, 0.0324166678, -0.0179999992,           0.
    248, 0.0324166678, -0.0179999992, 0.00700000022
*Element, type=C3D20R
1,  8,  5,  6,  7,  1,  2,  3,  4, 88, 87, 86, 85, 89, 90, 91,
   92, 94, 93, 95, 96
2,  16,  15,  44,  45,   9,  10,  33,  40, 100,  99,  98,  97, 101, 102, 103,
   104, 106, 105, 107, 108
3,  45,  44,  43,  46,  40,  33,  34,  39,  98, 111, 110, 109, 103, 112, 113,
   114, 108, 107, 115, 116
4,  46,  43,  42,  47,  39,  34,  35,  38, 110, 119, 118, 117, 113, 120, 121,
   122, 116, 115, 123, 124
5,  47,  42,  41,  48,  38,  35,  36,  37, 118, 127, 126, 125, 121, 128, 129,
   130, 124, 123, 131, 132
6,  48,  41,   3,   4,  37,  36,  11,  12, 126, 134,  91, 133, 129, 135, 136,
   137, 132, 131, 138, 139
7,   4,   3,   6,   7,  12,  11,  13,  14,  91,  95,  86,  96, 136, 140, 141,
   142, 139, 138, 143, 144
8,  20,  19,  14,  13,  17,  18,  12,  11, 147, 146, 141, 145, 148, 149, 136,
   150, 152, 151, 142, 140
 9,   5,   8,  62,  49,   2,   1,  21,  22,  88, 155, 154, 153,  89, 156, 157,
    158,  93,  94, 159, 160
10,  57,  63,  61,  50,   5,   8,  62,  49, 164, 163, 162, 161,  88, 155, 154,
    153, 166, 165, 167, 168
11,  56,  64,  60,  51,  57,  63,  61,  50, 172, 171, 170, 169, 164, 163, 162,
    161, 174, 173, 175, 176
12,  55,  65,  59,  52,  56,  64,  60,  51, 180, 179, 178, 177, 172, 171, 170,
    169, 182, 181, 183, 184
13,  54,  66,  58,  53,  55,  65,  59,  52, 188, 187, 186, 185, 180, 179, 178,
    177, 190, 189, 191, 192
14,  26,  23,  24,  25,  54,  66,  58,  53, 196, 195, 194, 193, 188, 187, 186,
    185, 198, 197, 199, 200
15,  19,  20,  80,  67,  18,  17,  27,  28, 147, 203, 202, 201, 148, 204, 205,
    206, 151, 152, 207, 208
16,  75,  81,  79,  68,  19,  20,  80,  67, 212, 211, 210, 209, 147, 203, 202,
    201, 214, 213, 215, 216
17,  74,  82,  78,  69,  75,  81,  79,  68, 220, 219, 218, 217, 212, 211, 210,
    209, 222, 221, 223, 224
18,  73,  83,  77,  70,  74,  82,  78,  69, 228, 227, 226, 225, 220, 219, 218,
    217, 230, 229, 231, 232
19,  72,  84,  76,  71,  73,  83,  77,  70, 236, 235, 234, 233, 228, 227, 226,
    225, 238, 237, 239, 240
20,  32,  29,  30,  31,  72,  84,  76,  71, 244, 243, 242, 241, 236, 235, 234,
    233, 246, 245, 247, 248
*Nset, nset=_PickedSet6, internal
   1,   2,   3,   4,   5,   6,   7,   8,  11,  12,  13,  14,  17,  18,  19,  20
  85,  86,  87,  88,  89,  90,  91,  92,  93,  94,  95,  96, 136, 140, 141, 142
 145, 146, 147, 148, 149, 150, 151, 152
*Elset, elset=_PickedSet6, internal
 1, 8
*Nset, nset=_PickedSet7, internal
   1,   2,   3,   4,   5,   6,   7,   8,   9,  10,  11,  12,  13,  14,  15,  16
  17,  18,  19,  20,  21,  22,  23,  24,  25,  26,  27,  28,  29,  30,  31,  32
  33,  34,  35,  36,  37,  38,  39,  40,  41,  42,  43,  44,  45,  46,  47,  48
  49,  50,  51,  52,  53,  54,  55,  56,  57,  58,  59,  60,  61,  62,  63,  64
  65,  66,  67,  68,  69,  70,  71,  72,  73,  74,  75,  76,  77,  78,  79,  80
  81,  82,  83,  84,  86,  88,  89,  91,  93,  94,  95,  96,  97,  98,  99, 100
 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116
 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132
 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 147, 148, 151, 152
 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168
 169, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, 180, 181, 182, 183, 184
 185, 186, 187, 188, 189, 190, 191, 192, 193, 194, 195, 196, 197, 198, 199, 200
 201, 202, 203, 204, 205, 206, 207, 208, 209, 210, 211, 212, 213, 214, 215, 216
 217, 218, 219, 220, 221, 222, 223, 224, 225, 226, 227, 228, 229, 230, 231, 232
 233, 234, 235, 236, 237, 238, 239, 240, 241, 242, 243, 244, 245, 246, 247, 248
*Elset, elset=_PickedSet7, internal
  2,  3,  4,  5,  6,  7,  9, 10, 11, 12, 13, 14, 15, 16, 17, 18
 19, 20
** Section: a
*Solid Section, elset=_PickedSet6, material=ABQ_CREEP_MOD_ANAND

** Section: c
*Solid Section, elset=_PickedSet7, material=Cu

*End Instance
**  
*Nset, nset=_PickedSet9, internal, instance=Part-1-1
  23,  24,  25,  26,  29,  30,  31,  32, 193, 194, 195, 196, 241, 242, 243, 244
*Elset, elset=_PickedSet9, internal, instance=Part-1-1
 14, 20
*Nset, nset=_PickedSet10, internal, instance=Part-1-1
   9,  10,  15,  16, 100, 101, 105, 106
*Elset, elset=_PickedSet10, internal, instance=Part-1-1
 2,
*Elset, elset=Set-1, instance=Part-1-1
 1,
*End Assembly
**
** MATERIALS
**
*Material, name=ABQ_CREEP_MOD_ANAND
** anand modified
*Creep, law=USER
**************************************************************************
** S1      Q/R      A      CSI     m      A0/H0      Shat         n
28.6E6 , 10278.43, 177016., 7.,   0.207, -90939.8E6, 52.4E6,     0.0177,
** a       T0      S2      S3    A1       A2        A3           A4
   1.6,     0., -0.0673E6, 0., 960.7E6, -0.956E6,  -3260581.8E6,24976815.5E6
*depvar
 1,
**************************************************************************
*Elastic
 4.8e+10, 0.36
*Material, name=Cu
** oxygen free
*Elastic
 1.14e+11, 0.31
**
** BOUNDARY CONDITIONS
**
** Name: BC-1 Type: Symmetry/Antisymmetry/Encastre
*Boundary
_PickedSet9, ENCASTRE
** ----------------------------------------------------------------
**
** STEP: analysis
**
*Step, name=analysis, nlgeom=YES, inc=10000
viscoplastic
*Visco, cetol=1e-06
0.1, 300., 2.31e-22, 1.
**
** BOUNDARY CONDITIONS
**
** Name: BC-2 Type: Displacement/Rotation
*Boundary
_PickedSet10, 1, 1, -0.0025
_PickedSet10, 2, 2
_PickedSet10, 3, 3
_PickedSet10, 4, 4
_PickedSet10, 5, 5
_PickedSet10, 6, 6
**
** OUTPUT REQUESTS
**
*Restart, write, frequency=0
**
** FIELD OUTPUT: F-Output-1
**
*Output, field
*Node Output
CF, RF, U
*Element Output, directions=YES
CE, CEEQ, CEMAG, E, LE, PE, PEEQ, PEMAG, S
*Contact Output
CDISP, CSTRESS
**
** HISTORY OUTPUT: H-Output-1
**
*Output, history
*Element Output, elset=Set-1
CE11, CE12, CE13, CE22, CE23, CE33, CEMAG, E11, E12, E13, E22, E23, E33, EP, INV3, MISES
PE11, PE12, PE13, PE22, PE23, PE33, PEMAG, PEP, PRESS, PS11, PS12, PS13, PS22, PS23, PS33, S11
S12, S13, S22, S23, S33, SP, TRESC, VE11, VE12, VE13, VE22, VE23, VE33, VS11, VS12, VS13
VS22, VS23, VS33
*End Step
----------------------------------------------------------------------------------------------------------------------------------------------------

Thanks.

Comments

zidane611's picture

Hi,

  I suppose your problem lies in STEP analysis. You can take some time in this. And could you tell me which version of ABAQUS you use?  

luvsharma11's picture

Zidane,

  As you can see it was posted last year I was very new to Abaqus then. There was some issue with field variables. The problem was solved. Anyway thanks for reply!!

 

can u share your modified anand model's vumat codes with me? I have studyed anand model for  a long time, but I cann't understand the corresponding theory. So if you can share the vumat or umat codes with me, I would appreciate it very much. my papers are as follows. if you have any ideas, I can also answer u. anyway, thanks you very much! 

[1] Haitao Wang, Huamin Zhou, Zhigao Huang, Yun Zhang, Xiaoxuan Zhao, Constitutive modeling of polycarbonate over a wide range of strain rates and temperatures, Mechanics of Time-Dependent Materials, (2016) 1-21.

[2] Haitao Wang, Huamin Zhou, Zhigao Huang, Yi Zhang, Haiyu Qiao, Zhipeng Yu, Experimental investigation and modeling of the mechanical behavior of PC/ABS during monotonic and cyclic loading, Polymer Testing, 50 (2016) 216-223.

[3] Haitao Wang, Yun Zhang, Zhigao Huang, Huang Gao, Yi Zhang, Xiping Gao, Huamin Zhou, Experimental and modeling study of the compressive behavior of PC/ABS at low, moderate and high strain rates, Polymer Testing, 56 (2016) 115-123.

[4] Haitao Wang, Yun Zhang, Huamin Zhou, Zhigao Huang, Constitutive modelling of polycarbonate at low, moderate and high strain rates, 2nd International Conference on Mechanical and Aeronautical Engineering, Hong Kong, 2016.

 

[5] Haitao Wang, Yun Zhang, Zhigao Huang, Zhongbin Tang, Yanpei Wang, Huamin Zhou, Establishment and comparison of four constitutive models of PC/ABS from low to high strain rates, Mechanics of Time-Dependent Materials, Under review.

can u share your modified anand model's vumat codes with me? I have studyed anand model for  a long time, but I cann't understand the corresponding theory. So if you can share the vumat or umat codes with me, I would appreciate it very much. my papers are as follows. if you have any ideas, I can also answer u. anyway, thanks you very much! 

[1] Haitao Wang, Huamin Zhou, Zhigao Huang, Yun Zhang, Xiaoxuan Zhao, Constitutive modeling of polycarbonate over a wide range of strain rates and temperatures, Mechanics of Time-Dependent Materials, (2016) 1-21.

[2] Haitao Wang, Huamin Zhou, Zhigao Huang, Yi Zhang, Haiyu Qiao, Zhipeng Yu, Experimental investigation and modeling of the mechanical behavior of PC/ABS during monotonic and cyclic loading, Polymer Testing, 50 (2016) 216-223.

[3] Haitao Wang, Yun Zhang, Zhigao Huang, Huang Gao, Yi Zhang, Xiping Gao, Huamin Zhou, Experimental and modeling study of the compressive behavior of PC/ABS at low, moderate and high strain rates, Polymer Testing, 56 (2016) 115-123.

[4] Haitao Wang, Yun Zhang, Huamin Zhou, Zhigao Huang, Constitutive modelling of polycarbonate at low, moderate and high strain rates, 2nd International Conference on Mechanical and Aeronautical Engineering, Hong Kong, 2016.

 

[5] Haitao Wang, Yun Zhang, Zhigao Huang, Zhongbin Tang, Yanpei Wang, Huamin Zhou, Establishment and comparison of four constitutive models of PC/ABS from low to high strain rates, Mechanics of Time-Dependent Materials, Under review.

can u share your modified anand model's vumat codes with me? I have studyed anand model for  a long time, but I cann't understand the corresponding theory. So if you can share the vumat or umat codes with me, I would appreciate it very much. my papers are as follows. if you have any ideas, I can also answer u. anyway, thanks you very much! 

[1] Haitao Wang, Huamin Zhou, Zhigao Huang, Yun Zhang, Xiaoxuan Zhao, Constitutive modeling of polycarbonate over a wide range of strain rates and temperatures, Mechanics of Time-Dependent Materials, (2016) 1-21.

[2] Haitao Wang, Huamin Zhou, Zhigao Huang, Yi Zhang, Haiyu Qiao, Zhipeng Yu, Experimental investigation and modeling of the mechanical behavior of PC/ABS during monotonic and cyclic loading, Polymer Testing, 50 (2016) 216-223.

[3] Haitao Wang, Yun Zhang, Zhigao Huang, Huang Gao, Yi Zhang, Xiping Gao, Huamin Zhou, Experimental and modeling study of the compressive behavior of PC/ABS at low, moderate and high strain rates, Polymer Testing, 56 (2016) 115-123.

[4] Haitao Wang, Yun Zhang, Huamin Zhou, Zhigao Huang, Constitutive modelling of polycarbonate at low, moderate and high strain rates, 2nd International Conference on Mechanical and Aeronautical Engineering, Hong Kong, 2016.

 

[5] Haitao Wang, Yun Zhang, Zhigao Huang, Zhongbin Tang, Yanpei Wang, Huamin Zhou, Establishment and comparison of four constitutive models of PC/ABS from low to high strain rates, Mechanics of Time-Dependent Materials, Under review.

can u share your modified anand model's vumat codes with me? I have studyed anand model for  a long time, but I cann't understand the corresponding theory. So if you can share the vumat or umat codes with me, I would appreciate it very much. my papers are as follows. if you have any ideas, I can also answer u. anyway, thanks you very much! 

[1] Haitao Wang, Huamin Zhou, Zhigao Huang, Yun Zhang, Xiaoxuan Zhao, Constitutive modeling of polycarbonate over a wide range of strain rates and temperatures, Mechanics of Time-Dependent Materials, (2016) 1-21.

[2] Haitao Wang, Huamin Zhou, Zhigao Huang, Yi Zhang, Haiyu Qiao, Zhipeng Yu, Experimental investigation and modeling of the mechanical behavior of PC/ABS during monotonic and cyclic loading, Polymer Testing, 50 (2016) 216-223.

[3] Haitao Wang, Yun Zhang, Zhigao Huang, Huang Gao, Yi Zhang, Xiping Gao, Huamin Zhou, Experimental and modeling study of the compressive behavior of PC/ABS at low, moderate and high strain rates, Polymer Testing, 56 (2016) 115-123.

[4] Haitao Wang, Yun Zhang, Huamin Zhou, Zhigao Huang, Constitutive modelling of polycarbonate at low, moderate and high strain rates, 2nd International Conference on Mechanical and Aeronautical Engineering, Hong Kong, 2016.

 

[5] Haitao Wang, Yun Zhang, Zhigao Huang, Zhongbin Tang, Yanpei Wang, Huamin Zhou, Establishment and comparison of four constitutive models of PC/ABS from low to high strain rates, Mechanics of Time-Dependent Materials, Under review.

can u share your modified anand model's vumat codes with me? I have studyed anand model for  a long time, but I cann't understand the corresponding theory. So if you can share the vumat or umat codes with me, I would appreciate it very much. my papers are as follows. if you have any ideas, I can also answer u. anyway, thanks you very much! 

[1] Haitao Wang, Huamin Zhou, Zhigao Huang, Yun Zhang, Xiaoxuan Zhao, Constitutive modeling of polycarbonate over a wide range of strain rates and temperatures, Mechanics of Time-Dependent Materials, (2016) 1-21.

[2] Haitao Wang, Huamin Zhou, Zhigao Huang, Yi Zhang, Haiyu Qiao, Zhipeng Yu, Experimental investigation and modeling of the mechanical behavior of PC/ABS during monotonic and cyclic loading, Polymer Testing, 50 (2016) 216-223.

[3] Haitao Wang, Yun Zhang, Zhigao Huang, Huang Gao, Yi Zhang, Xiping Gao, Huamin Zhou, Experimental and modeling study of the compressive behavior of PC/ABS at low, moderate and high strain rates, Polymer Testing, 56 (2016) 115-123.

[4] Haitao Wang, Yun Zhang, Huamin Zhou, Zhigao Huang, Constitutive modelling of polycarbonate at low, moderate and high strain rates, 2nd International Conference on Mechanical and Aeronautical Engineering, Hong Kong, 2016.

 

[5] Haitao Wang, Yun Zhang, Zhigao Huang, Zhongbin Tang, Yanpei Wang, Huamin Zhou, Establishment and comparison of four constitutive models of PC/ABS from low to high strain rates, Mechanics of Time-Dependent Materials, Under review.

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