...Luo Li; Yu-Lin Shen Purpose The purpose of this paper is to systematically investigate the influence of porosity, spatial distribution of pores and strain-rate sensitivity on the elastic–plastic and viscoplastic properties of pore-containing solids. Design/methodology/approach This work uses...

... viscoelasticity and viscoplasticity of semicrystalline polymers, and its parameters are found by fitting observations. The effect of damage accumulation of material parameters is analyzed numerically. Findings The model predicts accurately mechanical behavior of polypropylene in tests with numbers of cycles...

...A.D. Drozdov; J. deC. Christiansen; C.G. Potarniche Purpose The purpose of this paper is to perform experimental investigation and constitutive modeling of the viscoelastic and viscoplastic behavior of metallocene catalyzed polypropylene (mPP) with application to lifetime assessment under...