I am looking for a post-doctoral opportunity to use my know-how in
mechanics and further develop my understanding and contribute to the
community. I have a PhD in Engineering Mechanics from UW-Madison.
Hello,
I have faced a problem with modeling a dynamic load.
The load is given as a displacement constraint in boundary conditions. Additionally it is connected with amplitude definition which has 20 rows in tabulated data.
The problem is that the deformed shape does not look like expected, load is an earthquake simulation (amplitudes have changing signs) and the deformation looks as it was performed only for 1st row from amplitudes. The rest is not taken into account I tried to change amplitude's time span (step, total) but it didnt work.
Hi
all,
I
am an ABAQUS novice working on a graduation project. My model is a
reinforced concrete Tee-joint with steel rebars and stirrups embedded to the
concrete. The concrete is modeled using the Damage-Plasticity model, with
mostly default suggested values. The elastic and plastic values are
derived from experimental values. In addition to the embeddment, the
column and the beam is tied together using the tie command. The model is
subjected to an axial load as well as a displacement force.
Hi all,
I wrote VUMAT subroutine using fortran 77 for perfect plasticity unisng von mises plasticity..when analysed it using unidirectional tensile simulation for a simple cube model...it seems to me that it only goes through elastic deformation and not plastic...i tried to find out what is the error..but could not find it..could anyone please find what is the error in this code..i have attached the VUMAT code for the reference...thank you very much...
subroutine vumat(
Hi every one...
I finished my master in mechanical engineearing about eight month ago ... and in my Master career, I wrote a Fortran Finte element code with capabality of mortar cantact analysis[1,2] and rate independent plasticity with kinematic and isotropic hardening and with large deformation capabilty for isotropic materials[3,4]. My code converges very well and I achieved quadratic convergence and I didn't use any comercial Fe packages like ansys and abaqus .....
Usually, taut helical strand bending is dealt with by decoupling axial load and bending analysis. In the attached report, based on a purely geometrical approach, it is shown that there is indeed some coupling, albeit small.
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Help needed!! in Abaqus
I have UMAT written to update stress and material tangent components for a user defined material model. I need stretch ratio as an input for my material model. For this I am using deformation gradient from UMAT. Problem is, when there is constant strain (strain rate = 0), for example when material stretched to 100% strain (rubber) and then held at that strain for certain time to see stress relaxation, the deformation gradient should give the same value of 100% strain, but to my surprise this is changing. Can any one help me with this.
dear all
do anyone know how to simulate the plasticity of orthotropic material in abaqus cae?
your help will be highly appreciated.
best wish
kenneth
