Computational Mechanics Forum

Hi everyone,

What values should be used for the four items below for steel material fracture in ABAQUS: 

1) Fracture Strain ?

2) Stress Triaxiality

3) Strain Rate

4) Displacement at Failure

Thanks

Hi everyone,

In ABAQUS, is pressure output same thing as hydrostatic stress?

Thanks

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Hello,I've joined a racing contest for Off-Road cars , called Baja SAE ( Society of Automotive Engineers)

The car contains tubes that are welded together or attached together by flanges

I am familiar with Abaqus and ANSYS btw

What are the main aspects that we should consider in modeling and simulating a baja sae car ?

Can you help me with this?

I will keep my post brief to begin with.

The model consists of 7 rectangular interference fits (with 2 of the surfaces in direct interference).  The model appears to be working perfectly fine at simulating the stresses induced due to the fits for a variety of mesh sizes.  Once the mesh sizing of the slave components is reduced to below 0.4 the job fails due to experiencing negative eigenvalues.

To summarize - how can mesh refinement cause cause failure in a working model?

Hello,

i work with a micromechanical model to simulate the mechanical response under a tensile loading (loading unloading). I have been written the 3D and the 1D formulations but i find a slight difference between the two responses (Figure). Is it normal?

thank you

I had implemented Degenerated shell element by Ahmad et. al (1970). This element performs very poor in case of geometries like rectangular hyperbolic paraboloidal shells. When I modified the strain vector (only shear strain) with a additional -2*w/Rxy (Sahoo and Chakraborty, J. Strain Analysis (2004)), the solutions are not ok. Can you please suggest me if any other things I should be careful?

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