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Elastic-Plastic Fracture Mechanics. Lecture 1

Submitted by Zhigang Suo on
fracture mechanics
ES 247
Spring 2010

These notes belong to a course on fracture mechanics

Decouple elastic deformation of the body and inelastic process of separation. Up to this point we have been dealing with the following situation. When a load causes a crack to extend in a body, a large part of the body is elastic, and the inelastic process of separation occurs in a zone around the front of the crack. Inelastic process of separation includes, for example, breaking of atomic bonds, growth of voids, and hysteresis in deformation.

Instructor of Engineering Science and Mechanics

Submitted by Scott W. Case on
education

The Engineering Science and Mechanics (ESM) Department at Virginia Tech is seeking a non-tenure track Instructor that will begin on August 10, 2010. The successful candidate will have a Ph.D. or a M.S. in Engineering Mechanics or a related discipline. Candidates with an M.S. degree must have taken a minimum of 18 graduate semester hours of courses related to engineering mechanics. Teaching experience in a university or college is preferred.

 

back stress

Submitted by lamjuv on

hello everybody

i want to know what is the meaning of back stress and its effect on drucker prager yield criterion for viscoelasticity materials

thank you 

Mechanical Properties of Silicon Nanowires

Submitted by Yong Zhu on
research
nanomechanics
nanowires
Size effects

In this paper that was published a few months ago, we reported the size effects on the elastic modulus and fracture strength of silicon nanowires. In addition, we observed that the silicon nanowires are linear elastic until fracture with a very large fracture strain up to 12%.



Y. Zhu, F. Xu, Q. Qin, W. Y. Fung, and W. Lu, Nano Letters 9, 3934-3939, 2009



Abstract:



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