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arashmaleki's picture

TNT expolosion

I'm trying  to simulate  with ABAQUS a explosion of TNT and the effect of that on a metal panel. The metal panel is 200mm away from explosive. It is about 100g TNT. I now about the subroutine VDLOAD. Which options I could use else in ABAQUS? Is it posible to define a explosion lake this with *EOS? If yes, which element type I should use for explosive set? Should I define a element set for air, if I use *EOS?

Defining material properties in ansys

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How to input stress strain details into ansys in materila modelling?


I have the stress strain points in a excel format table....and also in graph..


fracture analysis in polymers

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How to find J integral using ansys of a CT specimen?

Both for 2D and 3D


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please help me to solve mechanical engineering design problem of rolling contact bearing with matlab. thank u so much.

turning simulation in abaqus

[img_assist|nid=14508|title=simulation of Turning of particulate reinforcement in abaqus|desc=|link=none|align=left|width=100|height=80][img_assist|nid=14508|title=simulation of Turning of particulate reinforcement in abaqus|desc=|link=none|align=left|width=100|height=80]

Dear Gropu member,

 I am josyula, working on machinability study of composites on abaqus .

1) i need help in modeling of particulate reinforce composite.

2) i need help in simulation of turning  in abaqus.

Gouse's picture

1st Indian Conference on Applied Mechanics (INCAM 2013) between July 4th to July 6th 2013

Dear Friends,

The department of applied mechanics is organizing the 1st Indian Conference on Applied Mechanics (INCAM 2013) between July 4th to July 6th 2013. Faculty and students are encouraged to send papers for this conference and help
in disseminating the information to others interested in the themes of the conference.

The details of the conference is given in the web link below:

ebarbero's picture

New book: FEA of composites using Abaqus

New textbook includes an explanation of the concepts involved in the detailed analysis of composites, a sound explanation of the mechanics needed to translate those concepts into a mathematical representation of the physical reality, and a detailed explanation of the solution of the resulting boundary value problems by using commercial Finite Element Analysis software such as Abaqus.


Using Abaqus, hanging some mass in Truss element (T3D2), facing numerical singularities and lack of convergence due to Truss elements have no initial stiffness to resist loading perpendicular to their axis. If a stress-free line of trusses is loaded perpendicular to its axis in Abaqus/Standard. Kindly suggest me how to overcome this. 

multilayer material photoelasticity measurement



i'm in an internship, and i want to study the stress destribtuion with photoelasticity method, but my problem is that the material that i have is not homogenious but there ares two layers. I can do the measurement for the two material separated, but i dont know how to do that for my layared material.


 anyone have an idea about how to do photoelasticity measurement for multilayere materials ?



Exponential model W (strain energy density function)- Zero stress zero strain condition



I am new here and have a very basic question on the Strain Energy Density (SED) function of exponential model.

 This is the exponential model SED form : W=a(e(b(I1-3))-1)

Now we have certain postulates such as that

1.W=0 when there is no deformation and

2. stress=0 when strain =0.

 When there is no deformation I1=3 and hence W=0, which is correct.

However, when we take the 1st derivative of W with respect to I1 to get our stress and then substitute I1=3 we don't get stress=0.

sbmarwadi's picture



I want to determine the number of cycles required to propagate a crack upto certain dimentions or vice-versa?

Does ansys APDL has that capability to do fatigue analysis of a growing crack.

my problem is analysis of elliptical corner crack present at shell nozle juntion. 

if yes,please tell what is to be done in ansys  13.0 APDL for this?

thanks and regards



ANSYS diffusion analysis

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I try to simulate diffusion between two solid plates under the action of temperature with ANSYS. They fixed in both side.

But I do not have an idea how to do it.



Abaqus - measuring angle between spring elements

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Hi everyone,

Is there any way to measure angle between two spring elements in abaqus assembly module?

Kindly help me.


Abaqus - Drawing a line in the assembly module?

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Hi everyone,

Could anyone let me know if it is possible to connect two reference points with a line in the assembly module of Abaqus?

I could find only a wire feature or a spring element feature.

Kindly help me.


Abaqus - uniformly meshing a sphere

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I have a small problem in generating a mesh for a sphere in abaqus.

am able to create a sphere using a 3D shell geometry, but I am unable
to uniformly mesh it. All I can see is an irregular mesh with
quadrilateral elements. I wanted to use hexahedral elements for the
sphere with uniform meshing and I tried using 'create bottom - up
mesh', but of no use.

Sorry guys, I know I've done it a long time ago. Can't figure it out now. Please help.


substructuring and submodelling

can someone give me applications of substructuring and submodelling and some releted project topic on that

fracture mechanics of concrete

how we may create a notch in a beam and how we may obtain the load- deformation curve by abacus 6.6.3 version plz anyone can give me step by step procedeure plzzzzzzzzzzzz 

Finite element programming for multiple load steps

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Hello Everybody

I am in need of help in including multiple load step options in my c program which is a fem solver for contact(2D).

I do not understand how  to go for second load step after the 1st one.

Its not clear for me what all i have to do, one thing i know is updating the nodal locations.

Please help me on this or guide to the place where ir can get help.


Thank You

Material Modelling

Hi all,

      I doing modelling on soft clay behaviour which exhibit softening behaviour during constant strain loading. Here i followed a non-associated flow rule for better prediction of dilation . For the case of non-associated flow rule yield function and plastic potential function should not same i clear in that , my doubt is that we can use two different surface for yield and plastic potential function (eg: linear surface as yield surface and elliptical surface as plastic potential )? 

Analytical elastic-plastic solutions for the torsion of a round bar with a heterogeneous cross section


I am trying to derive/find an analytical expression
for the torsion of a round bar made of an heterogeneous material. But I just do
not seem to find any solution available in the literature other than for a
homogeneous material, which can be find in any theory of plasticity book (e.g.
Theory of Plasticity, 3rd Ed., J. Chakarabarty, pp. 132-136).


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How to define tunnel volume loss in Abaqus in 2D and 3D?


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