Materials

Materials

Tangent Modulus (ls-dyna)

    • goktug.yilmaz
      Subscriber

      Hi everyone!


      I want to obtain tangent modulus from the results of my uniaxial tensile test. I find the picture below on the internet. However, as you can see, there are infinite number of points where you can calculate the slope. To obtain the tangent modulus of my material, which point's slope is required?

    • ramgopisetti
      Subscriber
      E_tan_Calculated / E ratio may be closer to an Elastic-perfectlynplastic case.nE_tan_Calculated = [(1+%EL/100)*S_ult - S_yield ]/ [(ln(1/(1-%RA/100)))- (S_yield/E)]n%EL= % Elongationn%RA= % Reduction in AreanE = ModulusnThe strengths are self Explanatory.nIf you don't know the %RA you can approximate by n%RA =200*%EL/(100+2*%EL)nCheck your other post for detailed answer.nCheers, Ramn
    • goktug.yilmaz
      Subscriber
      Dear sir,nnThank you very much for your help. I am very grateful to you. nCould you please recommend a source to me where I can also see those formulations? n
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