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Why the VVF of GTN model within Abaqus keeps 0

I calculated an example of unaxial tension using GTN model offered by Abaqus. I followed all the instructions found in CAE User's and Analysis User's manual in Abaqus documentation. No error or warning was issued but the result seemed ridiculous, since VVF, VVFG and VVFN keeped 0 throughout the process while equivalent plastic strain keeped increasing(which showed the material had come into plastic deformation). I don't know what went wrong, looking forward to you reply.

Ji Wang's picture

Faculty Positions in ALL Levels with the School of Mechanical Engineering & Mechanics, Ningbo University 宁波大学机械工程与力学学院招聘启事

The School of Mechanical Engineering and Mechanics, Ningbo University, is looking for cadidates for all subjects in the broad field of mechanical engineering and mechanics.  In addition to traditional field of impact and shock waves, piezoelectric devices, material durability, and metal forming, the school are also initiating new directions like vechicle engineering, fluid mechanics, occean engineering, solid mechanics, thermodynamics, vibrations, strength, and other related subjects.

Special Issue on 'Mechanics of Liquid and Solid Foams' freely available online!

This Special Issue of the International Journal of Solids and Structures includes sixteen articles presented at the international symposium: Mechanics of Liquid and Solid Foams. The symposium was organized under the auspices of the International Union of Theoretical and Applied Mechanics (http://www.iutam.net) and was held at the University of Texas at Austin in May 8-13, 2011. The papers deal with various aspects of mechanical behavior of cellular materials and foams in particular, and represent the state of the art in the field.

Julian J. Rimoli's picture

Call for abstracts: “Computational Modeling of Damage and Fracture in Solids”, SES 2012, Atlanta GA

As part of the 49th Annual Technical meeting of the Society of Engineering Science   (SES 2012) to be held in Georgia Tech, Atlanta, GA, on 10-12 of October , 2012, it is our pleasure to invite you to submit an abstract to the Symposium “Computational Modeling of Damage and Fracture in Solids”.

New book on Solid and Structural Mechanics, Modeling and Finite Element Analysis

 

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ADINA: Automatic Dynamic Incremental Nonlinear Analysis

The ADINA System offers comprehensive capabilities for linear and nonlinear finite element analysis of solids & structures, CFD, fluid-structure interactions, multiphysics, and complete pre- and post-processing with interfaces to various CAD and CAE systems. It also offers user subroutines for material models, elements, loads...

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