I have done flat plate tensile test experiment with plate having u notch at different angle to get mixed mode behaviour.The experiment shows the force variation F(30 DEG)>F(45 DEG)>F(0 DEG)>F(60 DEG) While fem elasto-plastic model made in abaqus shows F(0 DEG)>F(30 DEG)>F(45 DEG)>F(60 DEG).
Can anyone tell me why this contradiction is there between experiment and fem model.
The project addresses tissue modeling for the pharynx region and is a part of a larger project addressing the obstructive sleep apnea syndrome (mechanical, fsi, medical angles). See www.jobbnorge.no/ledige-stillinger/stilling/101325/phd-positions-in-sof… for further info. Deadline is 15 May.Expected start-up is summer 2014.
PhD studentship available http://icube-avr.unistra.fr/fr/index.php/Sujets_de_th%C3%A8ses#Simulatio... http://icube-avr.unistra.fr/en/index.php/Open_Positions#PhD_Thesis_in_me...
Please contact Hadrien or myself for more details. Related recent publications:
Amit Acharya Xiaohan Zhang
(Chinese Annals of Mathematics, 36(B), 2015, 645-658. Proceedings of the International Conference on Nonlinear and Multiscale Partial Di fferential Equations: Theory, Numerics and Applications held at Fudan University, Shanghai, September 16-20, 2013, in honor of Luc Tartar.)
We discuss the relevance of non-metricity in a metric-affine manifold (a manifold equipped with a connection and a metric) and the nonlinear mechanics of distributed point defects. We describe a geometric framework in which one can calculate analytically the residual stress field of nonlinear elastic solids with distributed point defects. In particular, we use Cartan's machinery of moving frames and construct the material manifold of a finite ball with a spherically-symmetric distribution of point defects.
Hello everyone,
I am working on textile composites. I have to assign local material orientation for the fibers. I have come across *ORIENT subroutine in abaqus. But I am quite new to user subroutines. Is there any other way in which I can assign local material orientation to the fibers?
The fiber layout is such that it has linear as well as sine part. Can anyone give some idea on how to create *ORIENT for such fibers?
Thanks
One approach to helical strand (cable or overhead electrical conductor) bending analysis puts the emphasis on friction rather than on elastic curved rod behavior. Based on Coulomb’s laws of friction, it leads to stick-slip models where strand bending stiffness varies with imposed curvature (Papailiou, 1995). Such an approach can be traced back to a Ph.D. thesis by H. Ernst, in 1933. This work is in fact often referred to in cable analysis reports. An English translation (with a short presentation) of the dissertation analytical part is attached.
