Skip to main content

Help: calculate elasticity tensor for hyperelastic material with plane stress configuration

Submitted by Haofei Liu on

Dear all,

I am confused with the calculation of elasticity tensor of hyperelastic material in plane stress configuration. Your helps are very much appreciated. Below is my question:

Incompressible strain energy function is expressed as, saying, U=***+p(J-1).

Therefore, the second piola-kirchhoff stress is: S=***+pC^-1 (the Lagrange muliplier p is treated as an arbitrary constant here, right?).

Using the plane stress condition, S<33>=0 so that p is updated as a function of deformation.

Continuum Modeling of Nonlinear Vibration of Graphene Resonators and Graphene-Based Mass Detection

Submitted by Kilho Eom on

We have employed continuum elastic model such as plate model for understanding the nonlinear vibration behavior of monolayer graphene and graphene resonator-based mass sensing. This work was published in Nanoscale Research Letters (Vol. 7, Art No. 499, 2012).

 

Abstract

ASME Applied Mechanics Division Call for Award Nominations

Submitted by Kenneth Liechti on

The Applied Mechanics Division seeks nominations for the awards listed below. All awards are international. Each nomination should include a nomination form and 4-5 letters of support, as described at http://www.asme.org/Governance/Honors/SocietyAwards/Nominate.cfm.

Anomalous phonon behavior of carbon nanotubes: First-order influence of external load

Submitted by Amin Aghaei on

Here is our recent paper published in Journal of Applied Physics

Title: "Anomalous phonon behavior of carbon nanotubes: First-order influence of external load"

Authors: Amin Aghaei, Kaushik Dayal, Ryan S Elliott

Abstract:

Postdoc opportunity at Harvard in mechanics of soft materials for wearable devices

Submitted by walsh on

The Wyss Institute for Biologically Inspired Engineering and the School
of Engineering and Applied Science at Harvard University invites
applications for immediate openings for a joint postdoctoral fellow
position between the Whitesides Group (Prof. George Whitesides) and the
Harvard Biodesign Lab (Prof. Conor Walsh). The research is expected to
involve material science and mechanics of soft materials with a focus on
developing novel materials (e.g. actively variable stiffness, flexible
composites, etc) and fabrication approaches for the next generation of

National High Magnetic Field Lab for postdoctoral fellowship

Submitted by Rongmei niu on

Postdoctoral
Research Associate Position

The
National High Magnetic Field Laboratory (NHMFL) in Tallahassee, FL is seeking a
Postdoctoral Research Associate to work on nanostructured permanent magnets.  Preference will be given to candidates who
have a strong commitment to research and development, and can actively contribute
to the programs within the NHMFL.

2013 W. M. Keck Institute for Space Studies Postdoctoral Fellowship Program

Submitted by paula1 on

Application Deadline: 12 Noon PST 28 November 2012



The W. M. Keck Institute for Space Studies (KISS) at the California Institute
of Technology announces an opportunity for highly qualified individuals to
apply for postdoctoral fellowships to conduct research in space science and
engineering. The primary purpose of KISS is to develop breakthrough planetary,
Earth, and astrophysics space mission concepts and technology by bringing
together a broad spectrum of scientists and engineers for sustained scientific

Reivew of fracture toughness testing and standardization

Submitted by xkuizhu on

Recently, a comprehensive review paper on fracture toughness testing and ASTM standardization was published by Dr. Zhu and Prof. Joyce in the journal of Engineering Fracture Mechanics:

XK Zhu and JA Joyce, "Review of fracture toughness (G, K, J, CTOD, CTOA) testing and standardization," Engineering Fracture Mechanics, 85, 2012: 1-46.

Welcome your comments and suggestions.

Case Studies in Engineering Failure Analysis - New Journal welcoming submissions!

Submitted by Laure Ballu on

We are very pleased to announce the launch of a new journal in the field of mechanical engineering, Case Studies in Engineering Failure Analysis. This journal provides a forum for the rapid publication of short, structured Case Studies in Engineering Failure Analysis and related Short Communications and will provide an essential compendium of case studies for practitioners in the field of engineering failure analysis and others who are interested in the ways in which components fail.