how transform umat to vumat
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please if somme one can help me i want to transform this umat to vumat
Computational Mechanics Forum
partitioning or selecting faces in ABAQUS using scripting techniques
Hi everyone,
I am trying to automate the process of creating models in ABAQUS using pure python scripting techniques. Even though I found a few resources on the web for specific but relatively easy geometry examples, I could not get how to use *faces.findAt to choose the faces I would like to partition. The sequence of points etc. are not very clear to me.
How to output the total moment of shell elements in Abaqus?
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I use abaqus S4R shell element to simulate the pipe bending. How to out the total bending moment at the cross-section?
Subspace Iteration eigenvalues and eigenvectors--efficient implementation?
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Anyone knows an efficient implementation of the subspace iteration method to compute a few lower eigenvalues and eigenvectors of a generalized problem KG*u=lambda*KS*u or any similar method? i.e., to compute the buckling loads and modes.
I'd like to use something optimized to Intel or amd64 processors or similar, like MKL, etc.
This is for bifurcation buckling analysis. KG is the stiffness matrix. KS is the geometric stress matrix. Both constructed from a FEM discretization.
Math Kernel Library MKL
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I want to use Intel Math Kernel Library (MKL) to calculate the bifurcation loads and modes in my custom FE program. MKL has many algorithms and I want to use the most efficient one.
Basically, I need to find a few eigenvalues lambda_i and eigenvectors u_i for the problem
KG * u = lambda * KS * u
where KG is the stiffness matrix and KS is the geometric stiffness matrix, also called stress-displacement matrix.
Is KG supposed to be positive definite?
Basically, I need to find a few eigenvalues lambda_i and eigenvectors u_i for the problem
KG * u = lambda * KS * u
where KG is the stiffness matrix and KS is the geometric stiffness matrix, also called stress-displacement matrix.
Is KG supposed to be positive definite?
Gas Explosion Modeling by AUTODYN
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Dear all
I wanna model Methane gas esplosion in a room by Autodyne.
what's the best EOS for modelling Methane in the room? and how can gain its parameters?
A Very silly abaqus question... applying a wind load
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Dear All,
Sorry to ask such a silly question but I am quite new to Abaqus... I am trying to model a tower exposed to wind. I know how the wind pressure varies according to height, but what I dont know is how to model it in abaqus... Also, if i apply a pressure load, then the load will act normally at all points on the surface, right? But in actuality wind doesnt act that way... Could anyone help me out on this one?
Thanks and Regards,
Lekshmi
Abaqus - Please help!
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Hello,
I am a bit confused about a simulation of brittle cracking presented in "ABAQUS EXAMPLE MANUAL" 1.1.5 Collapse of a concrete slab. I was trying to re-simulate the example on my PC and I got really weird results force (RF3) vs. time read in the support point.
Please have a look at attached picture. I download the file mnneice_5.inp from Example 1.1.5 calculated and got totally different resuls. Does it have something to do with setting of my Abaqus software?
Can somebody do the same and check this out?
Thank you very much for any help!