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Dear all, 

 These days I am doing some research on vibration analysis with uncertain properties. In traditional, Monte Carlo Simulation is used to do this simulation. But the drawback is time-consuming for the determinstic analysis. 

 For this, how to solve this problem? Please help me on it. Please give me some suggestion on it.

 Thank you for your concern.

Hi

 i am interested to study the morphology of polymeric membranes in non linear regime. I am in search of what actually a 'non linear behavior in a material represents'. Mathematically there are certain equations governing the non linear behavior. But my concern is how material behaves in non linear regime (under moderate to high stress). And what molecular and microstructural features contributes to the non linear behavior?. Can any one post me to under stand the micro sructural behavior of polymers in non linear regime. It would be useful help to me. 

The interpretation of general return mapping integration algorithm as closest point projection of the trial stress state leads to a lagragian with arguments as the state of the system. In the hardening regime, this lagragian is convex and newton's method guarantee uniqueness and convergence (Simo and Hughes). I am interested in the case when the lagragian is no longer definetively convex as could be the case in softening regime. Can anybody suggest me numerical techniques for this case?

2012-07-10

I would like to seek comments on : Room temperature stress relaxation and governing mechanisms that contribute to the plasticity that occurs during this process. As, most of the available work on relaxation is done at elevated temperatures.



Please check more on this thread by hari@



node/12687



 I have also attach papers by Prof Hart and Prof Krempl that did throw some light on this particular subject.

hi everybody,

 I'm a fresh man in Abaqus. Recently, I find that  the command 'abaqus cae script=job.py' works very well, however, the command 'abaqus cae noGUI=job.py' doesn't work. But the the 'job.py' is exactly the same! By the way, the problem shown by abaqus is located in the output area, fieldfieldoutput and historyouput.

 Does anyone know the difference between them? 

Thank you in advance! 

Jiagui 

Hi friends

I´m modeling Flexible Pavements in Abaqus and I need to model Cyclic load...haow can I do this???

can anyone help me???

Thanks 

PD: sorry   by my English

Large EPSILON 3D

CAE system for strength analysis at large strains redistribution.

Within research and development work with
the Ministry of Education and Science of the Russian Federation MSU Mechanics
and Mathematics Faculty has developed a multi-platform 3D prototype of the
software for computational modelling of strain concentrators generation in a
loaded body.

hi all,

       i am very new to work in abaqus pde enviornment. i am trying to do pin on disc wear simulation. i had created a model, parts,sets surfaces and applied boundary conditions on the model and save it in.cae file. i am now trying to open the modeldatabase from the script environment

the comman i am using mdb=openMdb(patName+'wear.cae')

when i am compiling this command the database is opened in the GUI but the features i created are not appearing there. please help me. please knidly let me know where i am doing mistake.