..., 1989) in u ˆ m k j satisfying the Navier’s equation is given by the solution of the following differential equation: (4) μ u ˆ m k , l l j + μ 1 − 2 ν u ˆ l k , l m j = δ m k f j . Plasticity Boundary...

... parameters (reached when plastic work becomes large) are independent of whether oscillations are performed under strain‐controlled or mixed deformation programs. Analysis of experimental stress‐strain diagrams is grounded on a variant of constitutive equations for semicrystalline polymers developed...

...Mohammad Rezaiee‐Pajand; Cyrus Nasirai; Mehrzad Sharifian Purpose The purpose of this paper is to present a new effective integration method for cyclic plasticity models. Design/methodology/approach By defining an integrating factor and an augmented stress vector, the system of differential...

... heterogeneous medium consisting of elastic inclusions that are embedded in a plastically deforming and fracturing matrix. The fracturing process of the matrix results in cumulative damage, in changes of elastic moduli, and in volumetric expansion. It was the confrontation with the complex experimental data...