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Speech of Acceptance of the 2010 Timoshenko Medal by Wolfgang G. Knauss

Submitted by Anonymous (not verified) on
mechanician

In the following the italicized portions were stricken from the oral presentation to better approximate the time length suggested. They are retained here primarily for the preservation of historical developments in mechanics.

Experimental Mechanics of History

How to determine crack length in XFEM analysis

Submitted by crazycolor on

Hi guys,

i am doing crack propagation analysis using XFEM. My model is working fine. i want to know how one can determine the length of the propagated crack against time increment. Is there any built in histroy out put variable with which one can calculate the length of the propagated crack using histroy output or is there any other way for example using pyton scripting. would be my pleasure to hear valuable comments from you guys. 

Alex

Can microscopic coefficients always be derived from macroscopic coefficient (biot effective coefficient, skempton coefficient)?

Submitted by Xiaogai Li on
Can microscopic coefficients always be derived from macroscopic coefficient?

To be more specific, 
alpha: Biot-Willis coefficient, Skempton coefficient 

These two parameters are derived from the macroscopic level which reflects the response of a porous material as a whole, without explicitly taking into account the individual contribution of its solid and fluid constituents.

Effect of External Normal and Parallel Electric Fields on 180^o Ferroelectric Domain Walls in PbTiO3

Submitted by arash_yavari on

We impose uniform electric fields both parallel and normal to 180^o ferroelectric domain walls in PbTiO3 and obtain the equilibrium structures using the method of anharmonic lattice statics. In addition to Ti-centered and Pb-centered perfect domain walls, we also consider Ti-centered domain walls with oxygen vacancies. We observe that electric field can increase the thickness of the domain wall considerably. We also observe that increasing the magnitude of electric field we reach a critical electric field E^c; for E > E^c there is no local equilibrium configuration.

Research Fellow/Research Assistant positions for mechanism design/vibration analysis of actuators for 10 Tbits/square HD Drives

Submitted by mpeleehp on
job

Our group has two research openings for people with expertise on mechanism design / dynamic and vibration analysis of actuators cater to 10 Tbits/square inch hard disk drives. Please send your cv to me at mpeleehp [at] nus.edu.sg (mpeleehp[at]nus[dot]edu[dot]sg) or Prof Ong CJ at mpeongcj [at] nus.edu.sg (mpeongcj[at]nus[dot]edu[dot]sg).

Postdoctoral Fellow Position in Computational Mechanics -- Accepting Applications until Position is Filled

Submitted by tmelsayed on
job
computational mechanics
constitutive modeling
parallel programming
postdoctoral position

Job description

A Postdoctoral Fellow position is available in the Computational Solid Mechanics Laboratory

(CSML) in the Division of Physical Sciences and Engineering at King Abdullah University of

Science and Technology (KAUST). Candidates with experience in one or more of the following

research areas are encouraged to apply:

(1) Constitutive modeling of materials (metals, biological tissues, polymers, gels, soft active

materials, …etc.)

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