Abstract:The relationship between tensile stress and strain of high density polyethylene(HDPE) strip was investigated using strip tensile test.And the strain rate dependent behavior of HDPE strip stress-strain relationship was analyzed.The relationship between mechanical behaviors of tensile modulus,maximum tensile stress,tension strain corresponding to maximum stress,Poisson ratio and strain ratio are discussed respectively.And,a mathematical model of HDPE strip strain rate dependent stress-strain relationship was put forward.And the physical meanings of the model parameters were discussed.And comparison has been made between strip tensile test results and predicted results.It is shown that the predicted results are well in agreement with the experiment results at different extension rate.
