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Spring 2007

David C. Schanuel

Submitted by David Schanuel on

My name is David Schanuel and I am enrolled in the flexible macroelectronics course taught by professor Teng Li at the University of Maryland College Park. I am enrolled in this class for a couple of reasons, first being the interest in a new field of science and the second being a course that fufills a graduation requirement.

Homework on finite deformation

Submitted by Zhigang Suo on

To the students of ES 241:

Although finite deformation was introduced in ES 240 (Solid Mechanics), finite deformation is a building block of ES 241. To review the subject, please go over a set of problems compiled by Jim Rice. If you need a reference, see my outline of finite deformation, where you can also find a short list of textbooks.

Poroelasticity, or migration of matter in elastic solids

Submitted by Zhigang Suo on

A sponge is an elastic solid with connected pores. When immersed in water, the sponge absorbs water. When a saturated sponge is squeezed, water will come out. More generally, the subject is known as diffusion in elastic solids, or elasticity of fluid-infiltrated porous solids, or poroelasticity. The theory has been applied to diverse phenomena. Here are a few examples.

Lecture 9 Interfacial fracture

Submitted by Zhigang Suo on
  • Williams singularity
  • Energy release rate
  • Mode angle
  • Stress oscillation
  • Small scale contact
  • Example 1:  A small crack on the interface
  • Example 2:  Thin film debonding
  • Interfacial fracture energy
  • Four-point bend specimen
  • Double-cantilever beam
  • The use of the interfacial fracture energy