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Multiscale method with model reduction

Submitted by Julien Yvonnet on

Model reduction based on Propper Orthogonal decomposition is widely used in Computational mechanics to reduce the number of degrees of freedom in systems. In the attached papers, we introduced a POD-based model reduction in a multiscale framework to significantly reduce the computations.

PhD at the University of Wisconsin-Milwaukee

Submitted by Dr. Michael No… on

I am looking for a PhD student (RA) in Mechanical
Engineering to start in Sept. 2010. The topic is in modeling in tribology
(biomimetic surfaces, contact mechanics, adhesion). The initial support (RA) can be
provided via INSIC TAPE grant and other sources. Interested persons should send
their resume to me at nosonovs AT uwm.edu. The admission criteria for the PhD
degree can be found at http://www4.uwm.edu/ceas/current_students/graduate_students/index.cfm

A very basic doubt in Strength Of Materials

Submitted by ROHAN_SK on

Hi Members,

                   This may seem a very basic or even stupid question to you all , but it still leaves me with a doubt regarding the concept behind the WHY and HOW of this. So however trivial this may seem Please bear wiith it and Help me Clearify my concept and getting the right idea.

Postdoctoral/PhD position

Submitted by Eran Bouchbinder on

A postdoctoral/PhD position in various non-equilibrium problems in solid mechanics is available at the Weizmann Institute of Science. Candidates should have a strong background in physics and/or theoretical mechanics, as well as experience with analytical and computational methods for solving partial differential equations. More details can be found in http://www.weizmann.ac.il/chemphys/bouchbinder/ For information about specific research projects, please send CV, a publications list and a statement of research interests to Dr.

Finite-Temperature Atomic Structure of 180^o Ferroelectric Domain Walls in PbTiO_3

Submitted by arash_yavari on

In this letter we obtain the finite-temperature structure

of 180^o domain walls in PbTiO_3 using a quasi-harmonic

lattice dynamics approach. We obtain the temperature dependence of

the atomic structure of domain walls from 0 K up to room

temperature. We also show that both Pb-centered and Ti-centered

180^o domain walls are thicker at room temperature; domain

wall thickness at T=300 K is about three times larger than that of

T=0 K. Our calculations show that Ti-centered domain walls have a

super-mechanician?

Submitted by Temesgen Markos on

This month's issue of SIAM news had a beautiful story of how one hard problem in mathematics was solved in less than six weeks using online collaboration. SIAM's story is not online yet, but here is another link to the same story .   SIAM news refers to a "super-mathematician" coming out of several individual mathematician spread all over the world.

Rubber fatigue testing. Displacement Controlled tests vs Force Controlled test

Submitted by Álvaro Sañudo Acosta on

Hi,

 I need some advice about the next topic. I've been asked to develop a Haigh Diagram for Natural Rubber as André et al.{1} or Saintier et al. {2} do, and from it, be able to predict the fatigue life of a train suspension. This authors carried out the fatigue tests under displacement control and they considered that the sample had failed when a 1mm crack appeared, because they were studing the crack initiation.

Axisymmetric mesh in ANSYS Workbench

Submitted by davlars on
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Hi everybody,

 

I am trying to investigate a biaxial membrane inflation experiment of human aortic tissue by the help of ANSYS Workbench. Before examining the actual anisotropic tissue I however am trying to create a model based upon a hyperelastic, but still isotropic, material. I have chosen the pre-listed neoprene rubber in ANSYS Workbench.