A complete series of potential functions for solving the wave equations in an almost transversely isotropic media is presented. The potential functions are reduced to only one potential function particularly for axisymmetric wave propagation problems. The potential functions presented in this paper can be reduced to Lekhnitskii-Hu-Nowacki solution for elastostatics problems.

Abstract Ground movements induced by deep excavations may cause damages on neighboring existing buildings. Finite element simulations generally give acceptable estimates of the horizontal displacements retaining wall, but results are less satisfactory for vertical ground surface behind structure. A possible explanation is that most constitutive models describe volumetric strains in a simplified...

This paper presents a method for implicit stress integration of the Drucker–Prager material model with kinematic hardening. The stress integration of the material model is conducted using the incremental plasticity method, while the kinematic hardening of material is defined using nonlinear Armstrong–Frederick hardening. This type of granular material hardening occurs as a consequence of the cy...

Rocket engine thrust chambers withstand very high temperatures and thermal gradients during service that induce multiple damaging phenomena such as plasticity, low-cycle-fatigue (LCF) creep. Numerical models can be used the design of these mechanical components in order to simulate main processes, accounting for complex material behavior due non-linear hardening viscoplasticity. This work repre...

Flatness is an important quality parameter of heavy plates and it generally achieved through cyclic elastoplastic deformation the plate in a hot roller leveller following rolling cooling processes. To investigate optimize levelling (straightening) process, Finite Element (FE) simulations are widely used. Generally, flow curves with isotropic hardening used for simulations. However, material mig...

Helium implantation at room temperature was performed to investigate irradiation hardening of ferritic/martensitic steels. Bulk hardness was extracted from Nix-Gao model using a Berkovich nano-indentor. The correlation between irradiation hardening and helium concentration ranging 500 2000 appm was examined. Nano-hardness increases as a function of helium concentration. The hardening of Fe is s...