Riccardo Fincato

Abstract In this paper is presented a return mapping algorithm for an elastoplastic/damage model that couples the constitutive equations of an unconventional plasticity model with the phenomenological description of ductile damage in the continuum damage mechanics framework. This approach combines the advantages of describing the mechanical property degradation by using the Lemaitre model with the realistic accumulation of plastic deformation in cyclic mobility problems from the subloading surfa

Purpose Many practical problems in engineering require fast, accurate numerical results. In particular, in cyclic plasticity or fatigue simulations, the high number of loading cycles increases the computation effort and time. The purpose of this study is to show that the return mapping technique in the framework of unconventional plasticity theories is a good compromise between efficiency and accuracy in finite element analyses. Design/methodology/approach The accuracy of the closest point proje

Since the end of the last century a lot of research on ductile damaging and fracture process has been carried out. The interest and the attention on the topic are due to several aspects. The margin to reduce the costs of production or maintenance can be still improved by a better knowledge of the ductile failure, leading to the necessity to overcome traditional approaches. New materials or technologies introduced in the industrial market require new strategies and approaches to model the metal b

Ductility in metals includes the material’s capability to tolerate plastic deformations before partial or total degradation of its mechanical properties. Modelling this parameter is important in structure and component design because it can be used to estimate material failure under a generic multi-axial stress state. Previous work has attempted to provide accurate descriptions of the mechanical property degradation resulting from the formation, growth, and coalescence of microvoids in the mediu

Damage in a structure is caused by material degradation due to initiation, growth and coalescence of micro-cracks/voids. In the recent years this topic acquired great importance in order to obtain a better design and to prevent the failure of components and structures. The present work aims to consider the influence of the stress triaxiality and the Lode angle effect on the ductile damage evolution, since it has been experimentally proved that the loading conditions highly affect the effective s

Abstract The aim of this study is to characterize the stress–strain behavior of three construction steels (SM490, SM570, and F18B) through both experimental and numerical investigations. The material performance was evaluated by conducting tests on round bar specimens subjected to monotonic, fatigue, and incremental step fully reversed loading conditions. The experimental campaign was conducted to provide valuable information on the mechanical performances of the steels and data for calibrating