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Newsletter for the ASME Committee on Constitutive Equations - Summer 2008

Submitted by Gregory M. Odegard on

Mechanics community,

Please find attached the summer 2008 edition of the ASME Committee on Constitutive Equations Newsletter.  Included in the newletter is an article written by Prof. Ostoja-Starzewski on "Homogenization and Size of Representative Volume Element (RVE)".

 

Thanks,

Greg Odegard

Accounting for the overhang (or under etch) in MEMS resonantor structures

Submitted by adiga on

Hi,

 

   I am wondering if there is a simple way to account for the overhang (or the under etch) in cantilever resonator structures when we are estimating for the resonant frequency of the  same. It will be a great help.

 

Thanks,

 

Vivek Adiga 

Postdoctoral Researcher Position in Solid Mechanics

Submitted by Dirk Mohr on

A postdoctoral researcher position is available at the Solid Mechanics Laboratory at Ecole Polytechnique (Paris).  The aim of this postdoctoral research project is to investigate the mechanical behavior of a newly-developed all-metal sandwich sheet material for automotive and aerospace applications. The ultimate goal is to optimize the characteristic sandwich core structure for formability, crashworthiness and fatigue life. This research makes use of experimental, theoretical and computational mechanics.

Effect of constraint on interface fracture toughness

Submitted by Siva P V Nadimpalli on

Hi All,

I have a question in my mind, we all know that the fracture toughness of isotropic, homogeneous materials is dependent on state of stress (plane strain and plane stress). It is higher in case of plane stress and decreases as the constraint increases and attains a constant value which we call "plane strain fracture toughness". But, what about the fracture toughness in interfaces? or fracture of thin layer bonded between two substrates (adhesive type)? I am sure that it will be a function of this as well.