I have an investigation on glass fracture in fire.
I have a fortran program and it can calculate the thermal stress with steady-state temperature and force load using finite element method, Now I want to change it to transient temperature and force load.
I wonder which method should be taken? I'd like to calculate the fracture at last.
Please help me!
Thank you very much.
I am trying to model a tube closed at the two ends by 2 plates. The cavity enclosed by the two plates and the tube is filled with fluid. I fix one end and apply a force to the other end. The tube is a very flixible material and thus all the force should be present as a pressure detected by the fluid.
When I try to do 2-way-FSI in ANSYS WB with CFX, all the force is taken up by the tube and none by the fluid. any suggestions?
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It is a common technique in modelling cracked bodies with finite element method, to refine the mesh near the crack tip. It is mentioned in text books, mesh refinement is nessecary to increase the acuuracy of the computed stress intensity factor for the crack tip. Is meshrefinement nessecary for computing eigen-properties ( natural frequencies and natural modes ) as well as SIF? or eigen properties are not affected much by the near crack tip field?
It would be very helpful for me if somebody clarifies the following problem: Suppose a beam with simply-supported boundary condition is loaded by uniformly distributed load. One can find out the moment and shear force at any point on the beam by finding forces at the boundaries and then considering equilibrium of some section of the beam.
Hi all!
I have a very fundamental question as follwing.
In Nonlinear FE formulations, we use rate equations (virtual work), but, in linear FE we don't use rate equations. Why???
Is it because Nonlinear solution is iterative solution (time may be virtual time).
I request those who have an idea to give some explanations.
Thanks in advance,
Regards,
- Ramdas
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The subject of adiabatic shear banding is quite classical and the main assumption is that it consists of structural/mechanical instability in which the thermal softening effects play a dominant role in the generation of the band (Zener-Hollomon).
I would like to focus on the phase that precedes global failure, namely up to the peak stress or strain) at which the material starts to exhibit negative strain hardening.
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