Blog posts
Contradiction in calculating Logrithmic strain from ABAQUS
Hi,
I am trying to extract logrithmic strains from Abaqus and then trying to compare with the experimental ones but I am getting different results. I found out the in Abaqus it uses slightly different formula then what I use theoretically.
In abaqus it computes LE from the following formula:
LE = plastic strain - true stress/E
But what I believe is that it should be like:
LE = plastic strain - yield stress/E
Can any one highlight why abaqus is using the first formula for LE calculation?
Positions in CAEP Software Center for High Performance Numerical Simulation (Beijing, China)
The newly setup "CAEP software center for high performance numerical simulation", located in Beijing, China, is recruiting.
The center is focused on large-scale numerical simulation on petaflops systems such as Tianhe-2 etc.
The R&D of the center spans broad areas of high performance numerical simulation including preprocessing (CAD, mesh generation), parallel visualization, high performance middleware, computational mechanics (nonlinear FEM, GFEM/XFEM, SPH/MPM), mental and energetic materials, nuclear physics, electromagnetics etc.
Refraction characteristics of phononic crystals——the Online First Article of Acta Mechanica Sinica
Journal Tittle: Acta Mechanica Sinica
Article Tittle: Refraction characteristics of phononic crystals
Author: Sia Nemat-Nasser
Indentation of Elastically Soft and Plastically Compressible Solids——the Online First Article of Acta Mechanica Sinica
Journal Tittle: Acta Mechanica Sinica
Article Tittle: Indentation of Elastically Soft and Plastically Compressible Solids
Author: A. Needleman, V. Tvergaard, E. Van der Giessen
Full-Time Position in Schlumberger
The below position is still open:
Job Description
Responsibilities: You will closely collaborate with Schlumberger design engineers in US, Europe, and Asia. You will be performing FEA studies in technically challenging areas such as non-linear solid mechanics, metal plasticity, viscoelastic materials, shock, vibration, heat transfer, composites, and fluid/structure interactions. You will also need to present FEA results to various internal or external clients.
Requirements
Theme Articles on Mechanics of High Speed Rail may Interest you ——Published in Acta Mechanica Sinica
Dear everyone!
Welcome to theme articles on current research progress on mechanics of high speed rail published in the SCI-indexed journal http://ams.cstam.org.cn.
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Theme Articles on Mechanics of High Speed Rail
Guest editor: Yujie Wei
A PHD position in QCM-based gas sensors
A PHD Research Assistantship is available in the Department of Material Science and Engineering, University of North Texas-Denton in the fields of modeling and experiment of QCM (Quartz crystal microbalance)-based gas sensor. The position will start from Spring, 2016. Candidates should have a Bachelor/Master's degree in engineering mechanics, mechanical engineering or electrical engineering with good academic standing and should have some experiences in the following:
Crushable Foam Model Calibration
Hi,
I am currently facing difficulties in calibrating abaqus crushable foam model with my experimental results.
I think I am bit confused about what values needs to be input in the model.
Right now my elastic properties are: E=400 MPa, v=0 (because its crushing)
In plastic under crushable foam I use compression yield stress ratio =1
and hydrostatic yield stress ratio =0.1.
Under crushable foam hardening card (Here I am confused), I convert the engineering stress to true stress using
(T.stress=E.Stress(1+E.strain))