The experiences from orthogonal machining simulations show that the Johnson-Cook (JC) dynamic failure model exhibits significant element size dependence. Such mesh dependence is a direct consequence of the utilization of local damage models. The current contribution is an investigation of the extent of the possible pathological mesh dependence. A comparison of the resulting JC model behavior co...

For high stress levels, the dependence of creep strain rate concrete on acting is nonlinear. Furthermore, very levels may lead to a critical growth microcracks resulting in material failure. lifetime assessment sensitive structures by means numerical simulations, realistic description nonlinear crucial. However, many models are formulated for either time-independent behavior, or time-dependent ...

Purpose This paper aims to present a nonlocal gradient plasticity damage model demonstrate the crack pattern of body, in an elastic and plastic state, terms law. The main objective this is reconsider theory by including material in-homogeneity caused plasticity. nature strain field provides regularization overcome analytical computational problems induced softening constitutive laws. Such appro...

Laser additive manufacturing enables economical production of complex lightweight structures. To realize the potential benefits technology in industrial applications, fatigue performance parts additively manufactured materials must be modelized. The aim this paper is to present a new modeling approach combining plasticity and damage, appropriate for as-built Laser-Powder Bed Fusion (LPBF) model...

We study the constitutive behavior, the damage process, and the properties of bursts in the continuous damage fiber bundle model introduced recently. Depending on its two parameters, the model provides various types of constitutive behaviors including macroscopic plasticity. Analytical results are obtained to characterize the damage process along the plastic plateau under strain controlled load...