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Dear colleagues,

I would like to ask you about heat transfer solvers, but first i have to descirbe my problem:

I would like to solve some small case: a simply supported beam (or any other structure), exposed to uniformly distributed load (or any other type of loads) and fire conditions (i.e. heat transfer: steady-state/transient, linear/nonlinear) = complex analisys of such case - structural cases.

And now question:

Which solver with user-friendly interface or without could you recommend? What about free software?

I've performed a fatigue experiment on aluminium.I want
to observe the microstructure and make a qualitative/ quantitative
analysis of strains based on observation the grains.Is there any
technique that would help me achieve the objective?Could someone help me on this?

Hi everybody,

Hi, 

From textbook of fracture mechanics, we know that for an embedded crack subjected to mode I stress state, KI=(2/π)σ√πa, while 2a is the crack size.

But for a embedded crack subjected to a pure shear stress τ, what is the stress intensity factor at the crack-tip?

Thank you 

Ruitao

Hello everyone,

hi everyone:

I  tried to perform a cohesive zone analyse in ANSYS, followed the turorial in HELP file. I used contact element to model cohesive zone. I found out that:

1, If I use standard material of ansys to define bulk element, like defined by 'mp,ex,1,2.1d5' or 'tb,biso', I can get a reasonable contact result;

2, If I use usermat file to define bulk element, 'tb,user', then the solusion also is done, but the resulte seems not correct, two part of model are not contact, some sections of them are coincide.

Hello Friends,

I am struggling to correlate FEA results with experimental
results. I work on polymer parts reinforced with glass fibers. I have stress
strain curves for the material till failure. My FEA results are 50% off from
the experimental results. The model is setup correctly.

Dear all,

I have a problem assigning surface radiation to my model. Lets say the model consists out of two same size cubes. I want to simulate one cube sliding on top of the other. So lets say in the beginning the lower cube is covered 50 % by the upper cube and at the end it is covered 70% by the upper cube. Hence, at all times a part of the surface of the lower cube is free to the environment and another part is covered by the upper cube. However, due to the sliding process the free surface is changing in time.

Dear friends

Hi

 I am working on the nonlinear inelastic analysis of concrete-filled steel tubular (CFST) short columns under axial loading. How do I use RIKS method availbale in ABAQUS? This method is used to apply load. How do I use load-control method in ABAQUS? How do I obtain load-strain curve for CFST column?

Best regards,

Vipul Patel