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What are the differences between "strain hardening" and "work hardening"?

Submitted by Shunlai.Zang on

I think the concepts from the constitutive theory, but in many papers the researchers seem that they dont differentiate them.  So could you give me an exact explanation about it?  Thank you.

Shun lai Zang  

B.Eng, MSc, PhD

Lectuer in Material Science and Engineering



School of Mechanical Engineering

Xi'an Jiaotong University

Xi'an ,Shaanxi,China

How to resolve the element-size dependence problem of strain-softening materials?

Submitted by Zhennan Zhang on

In the finite element simulaiton of material failure, the simulaiton results are critically dependent on the element size if the mateiral is described by a softening constitutive relationship. How to resolve this problem? What is the underlying principle of this phenomenon? Thanks!

Fatigue life calculation - reporting stress

Submitted by onkar bhise on

For fatigue life estimation (HCF & LCF), I am not sure which stress shall I consider i.e. max. principal stress or von Mises stress & what should be the criteria for selection of the same? Shall we be driven by material model (i.e. ductile or brittle) or mode of failure or some thing else?