DEEP DRAWING OF A CYLINDRICAL CUP

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hI was wondering if you can offer some help on this question how you calculated your values
THANK YOU

The blank is made of aluminum-killed steel, which is assumed to satisfy the Ramberg-Osgood relation between true stress and logarithmic strain,
ε=(σ/K)^(1/n)
with a reference stress value (K) of 513 MPa and a work-hardening exponent of 0.223. Isotropic elasticity is assumed, with a Young's modulus of 211 GPa and a Poisson's ratio of 0.3. An initial yield stress of 91.3 MPa is obtained from these data. The stress-strain behavior is defined by piecewise linear segments matching the Ramberg-Osgood curve up to a total (logarithmic) strain level of 107%, with Mises yield, isotropic hardening, and no rate dependence."

 

[FEA way]

I’m not sure what you mean. Do you want to define this material in Abaqus ? There is a deformation plasticity model in this software that uses Ramberg-Osgood relationship. To define it you have to specify:
- Young’s modulus
- Poisson’s ratio
- yield stress σ_0
- exponent n
- yield offset α

α=K(σ_0/E)^(n-1)

 

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for the excel on calculating strain values. the modelling part is ok i manage to finish it, its material excel values that i dont really know how to calcalate.
thank you

 

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hello again sorry i made all my modelling and BC but i dont know why its still not finishing the simulation below i have attached my cae file please help if there is a possible error on the file
greatly appreciate your help