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Multi time scale simulations for wear prediction in micro-gears

Submitted by vh on

Reliability of micro-gears is known to be adversely affected by wear. In this work we report a strategy to predict local wear with the aim of predicting their effective life span. For the prediction of local wear we start from the relevant model experiments, choice of a suitable wear model and identification of the wear coefficient from these experiments. This wear model is then implemented in an efficient finite element based scheme to predict local wear.

Expert programmer needed for atomistic project in Minnesota

Submitted by tadmor on

Expert programmer needed for an exciting project at the University of Minnesota involving the establishment of an online infrastructure for the evaluation of the transferability of interatomic potentials used in atomistic and multiscale simulations. The project called KIM -- the Knowledgebase of Interatomic Models -- is funded through the NSF's Cyber-Enabled Discovery and Innovation (CDI) program. For more information see the attached PDF file. The position is available immediately.

PhD thesis Evaluation

Submitted by kirthanlj on

Sir,

one of my students is working on PhD topic " Study of cold hole expansion and evaluation of fatigue properties on critical aerospace components". His work has to be reviewed by professor of non indian origin in foreign universities. I request you to kindly help this student. If you are interested, let me know, so that I will ask my university to contact you in this regard.

Thanks

Kirthan.L.J

A computational mechanics position in microelectronics industry

Submitted by charliezhai on

We have an opening for computational mechanics experts with Ph.D. in Mechanical Engineering or Material science.

 

The position will work on thermal mechanical modeling, analysis, material characterization and reliability test to improve product reliability and manufacturability.

 

why thermal stress is self equilibrating

Submitted by ranababu on
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Thermal stress does not develop when the free displacement is not constrained. How is this related to the term self equilibrating?

 

Say, I have a plate with the upper and lower surfaces at two different temperatures. The plate is not having any other constraint to prevent themal expansion. Why thermal stresses will not be generated in this case ( because of temperature gradient)?

 

Regards

Journal Club Theme of October 2009: Peridynamics applied to the structure and evolution of discontinuities

Submitted by Stewart.A.Silling on
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Discontinuities have a fundamental role in the mechanics of solids. The most famous type of discontinuity is a crack, but others are important too, such as dislocations and phase boundaries. Many types of deformation that appear to be continuous at the macroscale, such as plastic flow in metals, really involve the evolution of discontinuities at some smaller scale. 

ECCM IV, 2010, Paris: Symposium on multiscale methods for modelling surface effects on nanosystems and nanostructured materials

Submitted by Julien Yvonnet on

We are inviting abstracts for the following symposium: Multiscale methods for modeling surface effects on nanosystems and nanostructured materials, European Conference on Computational Mechanics (ECCM IV), May 16-21, 2010, Paris, France.
http://ww/eccm2010.org/index.php

Post-Doctoral Position in Theoretical Mechanics

Submitted by Yuhang Hu on

The University of California, Santa Barbara (UCSB), is commencing a basic research program to establish Virtual Tests for high temperature ceramic composite materials. This activity will be supported within the new National Hypersonic Science Center, Structures and Materials, which is funded by NASA and the U.S. Air Force Office of Scientific Research.The overall program involves a number of institutions, led by Teledyne Scientific Co., in Thousand Oaks, California (Drs. David Marshall and Brian Cox).