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Elastic strain computation- Is it tricky?
Sat, 2012-09-01 12:26 - kajalschopra
- Hi,
Elastic strain is any strain that takes place before exceeding the yield stress. However, it is important to note that, for hardening materials, elastic strain is increasing during post yield also.
Now,my question is- even though if I unload my specimenin the labortory and calculate the strain removed during loading- how can I calculate the elastic strain at a level of load following yield?
Because, the elastic strain is increasing following yield too- how can I know how much it is increasing?
Forums:
elastic strain...very fundamental question
I would say that if one wants to compute elastic strain (post yield) experimentally at a particular load level- realistically, then the experimentologist would have to have unload the specimen and find out the recovered strain.
Otherwise it is impossible to compute the elastic strains from experiemnts corresponmding to a particular level of total strain. Please correct me if wrong.
I'm writinfg some FE algorithms for 1D plasticity and this question has struck my mind which is troubling me.Please help...
Kajal