Georges Cailletaud & Lakhdar Taleb 
Multi-mechanism Modeling of Inelastic Material Behavior [EPUB ebook] 

This book focuses on a particular class of models (namely Multi-Mechanism models) and their applications to extensive experimental data base related to different kind of materials. These models (i) are able to describe the main mechanical effects in plasticity, creep, creep/plasticity interaction, ratcheting extra-hardening under non-proportional loading (ii) provide local information (such us local stress/strain fields, damage, ….). A particular attention is paid to the identification process of material parameters. Moreover, finite element implementation of the Multi-Mechanism models is detailed.

Зміст

Introduction

State of the art of the multi-mechanism models

Part I : Theory

Thermodynamical framework

State variables, free energy, plastic potentials, criteria, evolution rules, including thermodynamical consistency

Model with various mechanisms and one criterion

Model with various mechanisms and various criteria



Part II: Model application

Typical stress/strain responses

Creep, plasticity/creep interaction, rate sensitivity, ratcheting, extra hardening under non proportional loading, anisotropy

Damage in multi-mechanism models, continuum damage mechanics theory, Gurson approach

Comparison with experimental data bases (Carbon steel CS1026, Austenitic stainless steel 304 and 316 for a large temperature range, Austenitic stainless steel 304, Inconel 718, N18, 2000 series Al alloy, 35NCD16, Semi-crystalline polymers, Zirconium alloy, 55Ni Cr Mo V7, Mortar rubber aggregate).



Part III: Finite Element implementation

Numerical integration

Finite element simulation

Про автора

Georges CAILLETAUD, MINES Paris Tech, France Lakhdar TALEB, INSA Rouen, France Kacem SAI, ENIS Sfax, France