An Eulerian model for orthotropic elasticity and inelasticity applied to injection-moulded low-density polyethylene

Anisotropic elasticity and inelasticity is of relevance in many practical applications. The Eulerian formulation for anisotropic elastic inelastic response based on microstructural vectors used here to model an injection-moulded low-density polyethylene. In contrast with Lagrangian models inelasticity, the insensitive arbitrariness reference intermediate configurations as well measures total deformations. A specific strain-space-type yield function proposed that depends deformation hardening variables. Use also made a rate-independent smooth elastic–inelastic transition. material parameters were calibrated reproduce uniaxial test data loading three directions moulding plane. addition, strongly objective numerical implementation presented simulate stretching plate circular hole. metals, this polyethylene experiences deformations about 10%. Although spin rate could not be determined by available data, simulations loadings different observable influences rate.