research
Using Abaqus for cracks in the rocks
Hello Everyone,
My research is in petroleum geomechanics and I am Using Abaqus for my simulations of cracks and induced fractures in rocks around the wellbore I do have some problms and I will be happy if anybody can assist me:
1- I am interested in looking at Hoop stress at evry point around the wellbore ,but in Abaqus I can only see that in degrees of 0,90,180,270 of circular wellbore by using S1 and S2 ,naybody has a code or experience with that?
2-What is a correct method if we are interested in propping our fractures?
High Frequency Elastic Wave Propagation (KHz or MHz)
Hi everybody, I'm so interested in analysis of wave propagation in solid medias. and I've started by studying some books like "Ultrasonic wave propagation in solid media"(Rose). My question is about the importance of this analysis (propagation of high frequency elastic waves) in the structures. I know that the major application is in the field of Nondestructive Testing(NDT). but I don't know if it is usefull in vibrational analysis of mechanical structures (elastic waves with frequencies around KHz or MHz). is this study important in "dynamic response analysis" of mechanical structures in some special kind of loading like impact? I'd be gratefull if you could introduce me some examples.
Women in Computational Mechanics
Hi, I am Ms Zartasha Mustansar from the University of Manchester. I am currently working towards my PhD, funded by Microsoft and the Dorothy Hodgkins Postgraduate Award scheme. I am working in the Palaeontology Research Group, headed by Dr Phil Manning, who together with my supervisor Dr Lee Margetts, are leading the development of a new discipline "Computer Aided Palaeontology".
Solver for XFEM
In the FEM book by KJ Bathe and also in the fem book by G.Dhatt, it is said the direct solvers are generally more convenient than iterative solvers and new versions of them include reordering and efficient use of skyline method. In contrast there are iterative solvers with capability to directly manipulate sparse format of matrices. I am now working on XFEM coding with C++ and don't know what type of solver would be the best for XFEM. the conditioning issues of matrices obtained from XFEM would be a difficulty for the choice of preconditioners.
GI GII GIII computation in Rubber composites like tires (Comparaison between methods)
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2009-04-24 17:16:02
Hi all,
I am currently in my second year in Engineering school in France. I am doing research on 3D crack propagation in Rubber composites like tires.
And I wonder what is the best method to compute GI, GII and GIII. I have difficulties to choose between methods like EDI and VCCT for example.
I work in the finite strains case with static and dynamic. I also have difficulties to find papers on this subject with comparisons.
Can anyone please help me out with that
Thank You
Best Regards
Abaqus UEL for von Mises Plasiticity needed
Dear all,
I need an Abaqus UEL for von Mises plasticity as sample to learn how to write a UEL for plasticity. Does any body have any similar UEL code?
Thanks,
Hadi
Ansys modelling
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I am trying to simulate the interaction of two rectangular elastic rigid blocks embeded closely in a medium having relatively low elastic constant under simple shear condition. The space between two blocks was taken to be very low elastic constant. In the final result, I found the two blocks have overlapped to each other after a high finite strain value which is not true in practical. The blocks are supposed to keep distance among them. Can anybody suggest me how to avoid the overlapping?
transiant analysis of beam column joint
PLEASE SEND THE PROCEDURE FOR TRANSIANT ANALYSIS OF A BEAM COLUMN JOINT.HOW THE REINFORCEMENT IS GLUE WITH THE CONCRETE
B.Thanukumari.
One_D groundwater flow equation by Meshfree methods
I am a new Ph.D student. I want to solve 1-D transient flow equation with Dirichlet B.C.by meshfree method(Point collocation) with MQ-RBF (q=0.5).I've taken 11 nodes in a domain with 5 nodes in the support domain.How to take 5 nodes for 1st,2nd,10th and 11th node?How shape parameter α(alpha) is to be considered?