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software of interest to mechanicians

UMAT

Submitted by bagheriasl on
software

Dear ALL

I have this PDF and I have some information at this coding but have not information about the temprature dependent material properties.

what can I do??

sorry for that

For example see this function:

E(T)=E0*T^2+A*T+ ....

What can I define this type of Function?? 

Is my statement true? Can I do alike nonisotermal behaviour of the material???

 Please help me 

 Thanks so much

Regards 

porous solid modeling in abaqus

Submitted by raeisi.s on
Forums
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Hello every 1
I must model porous materials in abaqus!!but really i am confused how to create these complex shapes :p:p:p
voids in my models are not arranged but i thinks that i have to model them regular,how ever i need to simulate an configure like bone structure(specially that some wheres in model have more voids or less some thing like bone)
by the way my models are 3D and thickness of trabeculae|(pores wall) in configure is not constant(just like bone!!):cool:

thanksto all:)

fe-safe

Submitted by Hesham Elkanani on
software
ABAQUS
fe-safe

I'm using Abaqus in analysis of random vibration fatigue. I linked abaqus with fe-safe to calculate the fatigue life. Fe-safe didn't recognize the random load comming from Abaqus correctly, althghou it already recognize the cyclic(normal) load crrectly in one of the tutorial's attached example.

Do any body know how to solve this issue? 

ABAQUS VUMAT

Submitted by bagheriasl on
software

Dear All

I have writed a elastoplastic VUMAT to analyse a model in abaqus explisit code but after the analysis was finished, i can not observe the plastic strain conutors in it, in the onther word there is not PE option at odb field output. I rewuest you to give a favor to me. I am confused

thanks 

Error

Submitted by wakeful on
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Hi friends

I have two errors in my simulating ,with this massage:





2 nodes are missing degree of freedoms. The MPC/Equation/kinematic coupling constraints can not be formed. The nodes have been identified in node set ErrNodeMissingDofConstrDef.



Analysis Input File Processor exited with an error.



I checked all constraints in those two nodes, and I am sure that I created these constraints like others, but I cannot understand what is the problem?

Also there is a warning:





Technology Brief: Optimization of Turbine Blade Dovetail Geometries Using Abaqus and Isight

Submitted by SIMULIA on
software
ABAQUS
finite element
FEA
Optimization
Isight

The reliability of a gas or steam turbine is strongly
dependent on the blade structural design. 
Turbine blades are subjected
to very strenuous environments such as high temperatures, high stresses, and a
potentially high vibration environment. To avoid blade failures, they must be
designed to withstand these conditions. 

Simulation of solids mechanics with impact contact and friction, The Siconos software release 3.5.0

Submitted by vacary on
software
friction
contact
open-source
coulomb
signorini
numerical algorithms

Dear colleagues,

For people interesting in the simulation of solids mechanics with impact contact and friction, we are pleased to announce the release 3.5.0 of the Siconos software. The software is open-source, under GPL Licence and can be found at http://siconos.gforge.inria.fr/

It contains several time--stepping integrators for the nonsmooth dynamics and a large colection of solvers of the frictional contact problems that can be used separately.

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