On the nature of the Cauchy stress tensor
Checking the iMechanica web, I notice some discussion about the Cauchy stress tensor, whether it is covariant or contravariant. Well, a tensor is neither covariant nor contravariant, while it can be expressed by its covariant, contravariant, or mixed *components* with respect to any arbitrary coordinate system. See the attached short explanation.
Symposium: Advances in smart materials and adaptive structures (Porto)
Call for papers (abstract dealine: 28 Feb, 2009):
"Advances in smart materials and adaptive structures" symposium to be held at the third international conference on integrity, reliability and failure, IRF2009
July 20-24, 2009 Porto, Portugal
Sponsored by the Department of Mechanical and Industrial Engineering, University of Toronto
Please submit abstract by email to Aarash Sofla: sofla (at) mie.utoronto.ca
Look for some references about damage mechanics!
1、Chaboche J L. Une loi diferentielle d’ endommagement de fatigue avec cumulation non linearire.Revue Francaise de Mecanique,1974, 50-51
2、Lemaitre J, Plumtree A. Application of damage concepts to predict creep-fatigue failures. Journal of engineering materials and technology. Transactions of ASME. 1979,101:284-292
3、Wang J. Low cycle fatigue and cycle dependent creep with continuum mechanics. International Journal of damage mechanics. 1992a,1(2):237-244
Computation Time for Diffusion and Mechanics Simulations
Can someone please give me some general comments or insights to the simulation time of mechanics and diffusion (assembly time only, i.e., computation time other than solving the linear equations)?
Same mesh is used. Finite element method with linear elements (triangle or tetrahedra) is used for elastic deformation. Finite difference method with trapezoidal rule and backward difference is used for diffusion of a single dopant and assembly is done node-wise. Thanks!
Thermoelastic Instability Analysis
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Hi, I am new to iMechanica. I am also not sure whether this post is appropriate here or not.
4th International Symposium on Defect and Material Mechanics (ISDMM09), TRENTO, July 6th-9th, 2009
The Solid Mechanics group of the University of Trento (Italy) announces ISDMM09, the fourth international meeting devoted to Mechanics of Material Forces, following the workshops held at Kaiserslautern (2003), Symi (2005) and Aussois (2007), and will be held in the alpine city of Trento, Italy, from July 6th to 9th, 2009.
Abstract submission: January 31, 2009
More info: http://portale.unitn.it/events/isdmm09