I have written a Fortran code for nonlinear viscoelasticity according to the Hughes' recurrence algorithm based on a total Lagrangian formulation.  And a relaxation test is made. There is some deviation from the analytical solution(Theoretically the stress response should be an exponential decay plus a constant, isn't it?). The numerical ultimate stress is larger than the analytical one. As a larger initial strain is applied, the deviation is smaller. For a inital strain of 10%, there is almost no difference between the num. and analy. solution. What can account for this?

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Hi,



Initially, I asked this question to the Yahoo Group COMSOL
(FE package for multi physics simulation) because I thought, that there I
can find someone who is familiar with both COMSOL and Abaqus.
Unfortunately, among the experts of COMSOL I did not find an expert in
Abaqus.

COMSOL has an example 'Tube Connection' - a flange with four prestressed
bolts is subjected to tensile forces. To compute the influence of the
tensile force on the stress level in the bolt, the model includes a

We have conducted an integrated experimental and numerical analysis to study the compression-after-impact (CAI) response of woven fiber-reinforced composites.

On 16 and 17 February 2011 the Conference on Sustainable Construction and Design will take place. This event now comes to its third edition. Coming from a one-day event (called "Day of Research") where the research of our industrial and academic partners was presented, the conference has now grown to a scientific platform where the industrial and academic communities can exchange the latest research developments in following fields:

Dear Mechanicians,

please see the attached advertisement for a Professor search in Mechanics at ETH Zurich.

Yours sincerely,

Jean-Francois Molinari

A 3D Social Net Working Site (http://bit.ly/9yGMrO) was launched for publishing 3D Simulations.  It is to 3D Simulations like what youtube is for videos. The teachers / Professors of Science , Engineering, FEA, CFD can download the 3D simulations from here and embedded into PowerPoint slides and show interactive 3D simulations to the students, making the teaching of Science and Engineering very interesting. http://bit.ly/9yGMrO   

Dear colleagues,



The Journal of Solid Mechanics (JSM)  invites original research papers and research notes covering a broad area of mechanical engineering activities associated with the classical problems of structural analysis to mechanics of solids, fracture, and heat transfer, thermal effects in solids, optimum design methods, and numerical techniques and recent developments in these areas for review and consideration of possible publication.