Nonlinear Dashpot
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How to simulate a nonlinear dashpot in Abaqus
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How to deal with negetive plastic strain increment in FEA in an elasto - plastic problem
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In case of elasto-plastic problem it is mentioned that unloading of an integration point should be started along the elastic moduli when the solution gives a negetive increment of the plastic strain at the integration point. If anyone could elaborate it a little more, it will be really helpful.
Thanks
nonuniform surface traction in abaqus .
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Hello everyone:
recently i encountered a problem when using abaqus .i wanna define shear distributed load along a surface,
the magnitude of a single point is related with its velocity.but it looks that abaqus does not support this kind
of load even in VDOLAD .how can i do to realize it?
thks a lot .
Help regarding Tutorials on Creep using Abaqus
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My research area is modeling of creep in MMC. I am trying to use Abaqus for this purpose but I am unable to find any tutorial that can provide me some help that how to use creep module provided in Abaqus. Will any body can help me by providing some tutorial related to that topic. It will be highly apprecioated.
macro
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hello all,
Do the log file work as macro in ANSYS?
I am trying to create a macro for my simulation so that i can
run, and save result for different load conditions. Is this possible in
ANSYS? If yes how can i do it? I will be greatful for your reply.
Thank you,
Sailen
modelling cyclic plasticity in abaqus
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I have to model cyclic plasticity in ABAQUS. The method to use ( this is as per ASME Boiler and Pressure Vessel code) involves only a single loading ( rather the load range has o be applied) and using a stabilized cyclic stress strain data expresssed in Ramberg Osgood format. The parameters for Ramberg Osgood are specified in the equation to be used fpr stabilized cyclic stress strain curve.
Implementing the same in ABAQUS, gives me the following possibilities :
Problem with fortran code for solving large strain 2D elastic problem by FEM using Updated Lagrangian Framework
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I am using my own fortran code to solve a large strain 2D elastic problem using FEM in Updated Lagrangian framework and I am using incremental formulation. It works well for 2D pull of a square block with 2 elements and I've compared the results with a commercial FEA package. But while solving bending of a cantilever beam the results starts to blow up and the elements distort abruptly after certain time step. This happens only when the load or the displacement given at the free end of the beam is large otherwise it works fine.
How do i find the bearing stifness of a ball bearing, theoriticaly
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HI,
How do i find the bearing stifness of a ball bearing, theoriticaly.. is there any advanced software for finding bearing stiffness
four node quad element with one quadrature point
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Hello all,
Could anyone help me with the four node quadrilateral element with one quadrature point for nonlinear implicit solid mechanics problem? To be more precise, I would like to know
(1) the form of the internal force vector and
(2) the form of the tangent matrix
of this special element.
[Newton-Raphson Iteration in Transient Thermal Analysis
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Hi,
I have been quite confused about this for sometime now. It
has not been mentioned clearly in the books/references that I have
looked into.
In transient thermal analysis with implicit scheme
or the Crank Nicolson scheme, are there Newton Raphson iterations based
on the residual vector in every time-step?
Thanks,
Shriram
--
Process Engineer
Moore Nanotechnology Systems
Keene, NH - 03431