Blog posts
New introductory course in structural mechanics opens on edX
2.01x: Elements of Structures is a new introductory course in structural mechanics that just started on edX. Anybody can register to audit the course for free.
Course material includes lecture videos, tutorials, example problems, recitation problems with video walkthrough, homework problems, "boardnotes" (condensed lecture notes) and synoptic tables.
Deformation gradient change in Abaqus
Help needed!! in Abaqus
I have UMAT written to update stress and material tangent components for a user defined material model. I need stretch ratio as an input for my material model. For this I am using deformation gradient from UMAT. Problem is, when there is constant strain (strain rate = 0), for example when material stretched to 100% strain (rubber) and then held at that strain for certain time to see stress relaxation, the deformation gradient should give the same value of 100% strain, but to my surprise this is changing. Can any one help me with this.
plasticity of orthotropic material in abaqus cae
dear all
do anyone know how to simulate the plasticity of orthotropic material in abaqus cae?
your help will be highly appreciated.
best wish
kenneth
Molecular Dynamics Simulations and Continuum Modeling of Temperature and Strain Rate Dependent Fracture Strength of Graphene
I would like to share with you our recent paper published in the Journal of Applied Mechanics: J. Appl. Mech. 81(8), 081010 (Jun 02, 2014)
TMS- 2015 CALL FOR ABSTRACT (Symposium on Advances in Thin Films for Electronics and Photonics)
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Meeting |
2015 TMS Annual Meeting & Exhibition |
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Symposium |
Advances |
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Sponsorship |
TMS |
TMS- 2015 CALL FOR ABSTRACT (Symposium on HIGH TEMPERATURE SYSTEMS FOR ENERGY CONVERSION AND STORAGE)
HIGH
TEMPERATURE SYSTEMS FOR ENERGY CONVERSION AND STORAGE
TMS Division: Functional Material Division (FMD
formerly known as EMPMD)
FMD sub-committee: Energy Conversion and Storage
Organizers:
Homogenization - If materials in the model are isotropic, is it possible to get truly anisotropic resulting material?
Hello,
I read that "In general, even if the materials on the micro-level are isotropic, the effective
material can show anisotropic behavior. A general anisotropic linear elastic material
may have twenty one independent material parameters.''
If I understand my results correctly then simple structures like ''ball in the unit cell'' result in orthotropic material.
I am a bit puzzled - what would be the simplest structure that would result in anisotropic material behaviour?
The 2nd Sandia Fracture Challenge is here!
update, 7/24/2014: The information packet ("SFC2-challenge-v5.ppt") is no longer attached to this post (iMechanica has a file size limit of 1 MB, so we can not attach the 6 MB file). IF YOU WOULD LIKE THE INFO PACKET, PLEASE E-MAIL ME, blboyce [at] sandia.gov and copy Dr. Sharlotte Kramer, slkrame [at] sandia.gov. If you have an older version of the information packet, please also e-mail for the newest (v5) info packet.
We intend to send the shear calibration data to all those whose e-mail address I have by August 1st (sorry for the delay!).