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shreeram111's picture

UMAT Non linear Viscoelasticity - Algorithm verification?

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Hello everybody,

           My task is to write a UMAT for Non-linear Viscoelasicity based on Schapery's model in ABAQUS. I have coded the routine, but I am still not able to predict correct response. I tried to debug it as much as I can. I understand that it would be difficult for anybody to understand my code. So, I have attached a flowchart (pdf) of the whole algorithm that I follow. It would be nice if you could check that and correct me if I am wrong.

Thanks in advance for your time and consideration

Regards

Shree

karelmatous's picture

Postdoctoral Associate

The Computational Physics Group at the Aerospace and Mechanical Engineering Department at the University of Notre Dame is seeking a highly qualified candidate for the post-doctoral associate position in Computational Science and Engineering. The successful candidates will be a key part of a team that is developing and implementing adaptive, multiscale, high-performance (parallel) computational algorithms for numerical solutions of chemo-thermo-mechanical PDE’s with emphasis on complex heterogeneous materials, such as heterogeneous reactive composites, etc. 

karelmatous's picture

Postdoctoral Associate in Computational Mechanics

The Computational Physics Group at the Aerospace and Mechanical Engineering
Department at the University of Notre Dame is seeking a highly qualified candidate for
the post-doctoral associate position in Computational Science and Engineering. The
successful candidates will be a key part of a team that is developing and implementing
adaptive, multiscale, high-performance (parallel) computational algorithms for numerical
solutions of chemo-thermo-mechanical PDE’s with emphasis on complex heterogeneous

cbrinson's picture

Associate Professor Position in High Performance Computational Methods at Northwestern

Applicants are invited to apply for a tenure track faculty position in Mechanical Engineering at the Associate Professor level in computational science and engineering at Northwestern University.  Higher level appointments will be considered under special qualifications. Candidates are expected to demonstrate strong skills in leadership and a commitment to collaboration and teaching in the graduate and undergraduate programs of the McCormick School of Engineering.

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