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The Geometry of Discombinations and its Applications to Semi-Inverse Problems in Anelasticity

Submitted by arash_yavari on
research
Nonlinear elasticity
residual stress
defects
Geometric mechanics

The geometric formulation of continuum mechanics provides a powerful approach to understand and solve problems in anelasticity where an elastic deformation is combined with a non-elastic component arising from defects, thermal stresses, growth effects, or other effects leading to residual stresses. The central idea is to assume that the material manifold, prescribing the reference configuration for a body, has an intrinsic, non-Euclidean, geometric structure. Residual stresses then naturally arise when this configuration is mapped into Euclidean space.

Masters/Ph.D position available

Submitted by Karthic_Narayanan on
research
computational mechanics
finite element methods
Modeling and Simulation

 On behalf

 A fully funded Masters or Ph.D student position is available @ Monash University, Malaysia Campus. The project will be supervised by Dr.Ean Hin OOI (http://scholar.google.com.sg/citations?user=SAj61qwAAAAJ&hl=en ). Kindly email your enquiries to Ooi.Ean.Hin [at] monash.edu (Ooi[dot]Ean[dot]Hin[at]monash[dot]edu)

Implementing XFEM in ABAQUS using dynamic implicit step

Submitted by Vinod.Kushvaha on
research

Is there anybody who has implemented XFEM in ABAQUS using dynamic implicit step? My model runs fine when I use 'static, general' step but when I change it to 'dynamic, implicit' I get following error message"The following XFEM cracks are failing to correctly generate and says crack domain contains invalid element shape." Please let me know what do I need to change in the model to fix this error. 

Thanks so much for your help,

Sincerely,

Vinod Kushvaha 

How the pressure in ANSYS is implemented?

Submitted by Breslavsky on
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There are several possibilities for the realization of the presure load.

For
example, when I apply a pressure to an area (lets say, thin rectangular
plate) the area of the plate grows during the deformation process. One
possibility is to keep the pressure per unit area constant (in this case
the total force acting on a plate grows during the deformation) and the
second is to keep constant the total force acting on the plate (in this
case the force per unit area decreases with the deformation). I looked

Acta Mechanica Sinica, Vol.30, Issue 3, 2014 is online now!

Submitted by CSTAM_Journal on
research

Dear everyone!

The third issue in 2014 (Volume 30, Issue 3) of Acta Mechanica Sinica (AMS) is now online.

Welcome to this SCI-indexed journal http://ams.cstam.org.cn for rapid publication of your exciting results.

_______________________________________________________________________________

Phase-field modeling and simulation of fracture in brittle materials with strongly anisotropic surface energy

Submitted by Bin_Li on
research
phase field model of fracture with strongly anisotropic surface energy

Crack propagation in brittle materials with anisotropic surface energy is important in applications involving
single crystals, extruded polymers, or geological and organic materials. Furthermore, when this anisotropy
is strong, the phenomenology of crack propagation becomes very rich, with forbidden crack propagation
directions or complex sawtooth crack patterns. This problem interrogates fundamental issues in fracture
mechanics, including the principles behind the selection of crack direction. Here, we propose a variational

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