Finite element analysis of AA1100 elasto-plastic behaviour using Johnson-Cook model

Abstract Johnson-Cook material model is generally used for computation analysis of impact and the penetration related problems involving ductile materials. This paper deals with determination of Johnson-Cook material parameters by considering the strain-hardening effect for aluminum alloy AA1100. Uniaxial tensile tests, on AA1100, are performed at strain rates of 10 -4 to 10 -1 per second using a low capacity but high sensitivity testing machine to obtain the elasto-plastic deformation behaviour of the samples. This behaviour is then test simulated using finite element analysis software. Experimental results showed that the strain hardening behaviour of AA1100 is similar at all quasi-static strain rates considered in the present study at room temperature. Moreover, finite element results are in good agreement with the experimentally obtained results under the domain of the strain rates considered in the present study.