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Research assistant and PhD position at PoliMi on corrosion-fatigue

Submitted by S. Beretta on

Raiway axle failures have been the starting point for the studies on fatigue. However, recent accidents and papers (see [1] by Hoddinott) have shown that corrosion-fatigue plays a significant role.

At PoliMi we have recently investigated this topic finding interesting results by corrosion-fatigue tests on small-scale specimens and, recently, a validation of the model by full-scale corrosion-fatigue tests (see papers [2-3]).

Postdoc position available on atomistic simulations of water/graphene interface

Submitted by barbarossapao on

A postdoc position is available next January at Research Center for Applied Sciences, Academia Sinica in Taiwan on the molecular simulation of the water/graphene interface.

For those who are interested, please contact Chun-Wei Pao (cwpao [at] gate.sinica.edu.tw) or Jer-Lai Kuo (jlkuo [at] pubs.iams.sinica.edu.tw).

 

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

Submitted by Anonymous (not verified) on

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.

beginner of MD/DD. what are all the topics that need to be covered?

Submitted by krnk on

Dear iMechanica memebers,

I am a PhD student. I started to work on MD and DD. I know the overview of the  MD and DD,but to have the good basics (statistical mechanics, quantum mechanics, classical mechanics and dislocation dynamics ) knowledge,  i am not getting where to start and where to end these subjects.

could any one tell which are the main topics to be covered in the above subjects, if possible could any one suggest good books related to these subjects. 

could any one please help me in this regard.

 with best regards