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What is stress? Is stress a physical quantity?(second section)

Submitted by Yi-Heng Chen on

What is stress? Who has ever seen stress? Is stress a physical quantity?(second section) Let us re-consider an example for metal foam as show n Figures 1(a,b) that show the local flexuosity under cycle compression loading. Previous researchers used the effective elastic moduli theory and the effective stress concept to study this kind of problem. However, who know what are the approximate stresses at any point in the form, say, at the points A, B, A’, B’?

What is stress? Who has ever seen stress? Is stress a physical quantity?

Submitted by Yi-Heng Chen on

What is stress? Who has ever seen stress? Is stress a physical quantity?

Professor Yi-Heng Chen, Xi’an Jiaotong University, 710049, P.R.China

e-mail: yhchen2 [at] mail.xjtu.edu.cn (yhchen2[at]mail[dot]xjtu[dot]edu[dot]cn)

 

In fact, this question has been bothering the present author for more than 15 years.