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.
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
Hi everybody,
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
Hello,I'm a student in engineering. I wannto do simulation of the process of a cracked plate which is subjected to tensile stress at the each end of the plate and perpendicular to the crack plane. with ansys .( crack type I )
Hi, I am new to iMechanica. I am also not sure whether this post is appropriate here or not.
i am simulating a 2D crack. at the interface of 2 rectangles made of different materials. so i have 2 set of nodes at the interface,after simulating the crack do i need to merge the nodes upto the crack front ? for solving.
kcalc command in ansys is giving me much lower values of stress intensity factor. i am inputting my pressure load 70 psi and am getting K vale 2603psi(inch)^0.5 which is not even reaching the thresshold value in the da/dn curve even for the longest possible crack. so i feel my results are wrong.can anybody help me with this
