1/28/2002

Remember:

Turn in your homework WEDNESDAY before class start.

Failure criterions

Brittle fracture

Ductile fracture

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τ>τcr

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σ >σ cr

Mohr circle

Pure bending failure

Simple torsion failure

SCI

Science Citation Index (SCI)

Know a Famous Scientist project

Definition: a scientist is defined as “research famous” if his/her published paper has been cited > 150 times.

Know and build relationship with a research famous scientist in the field of Deformation and Fracture of Engineering Materials.

Void coalescence

Analysis of the cup-cone fracture in a round tensile bar

V. TvergaardThe Technical University of Denmark

A. NeedlemanBrown University

Acta Metallurgica, 1984

More things to know…

1. Tensor

2. Finite element analysis

3. Void nucleation criterion, Gurson’s model

4. Element-vanish-technique

Failure process in the neck of a round tensile specimen of copper

Crack growth