A Unified Inelastic Constitutive Model of Modified 9Cr-1 Mo Steel Taking into Account the Dependence of Cyclic Softening on Temperature Histories

Autor:	Haruhisa Suzuki, Tetsuya Suzuki, Morio Jincho, Eiichi Tanaka
Rok vydání:	1996
Předmět:	Materials science Mechanical Engineering Constitutive equation Isotropy Thermodynamics Monotonic function Unified Model Mechanics Degree (temperature) Creep Mechanics of Materials Range (statistics) General Materials Science Constant (mathematics)
Zdroj:	TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A. 62:1017-1024
ISSN:	1884-8338 0387-5008
DOI:	10.1299/kikaia.62.1017
Popis:	The present study is concerned with the formulation of a unified inelastic constitutive model describing the behavior of cyclic softening under temperature variations. For this purpose, we first examine the behavior of isotropic and kinematic hardening variables based on the results of cyclic experiments conducted by us under several constant temperatures and temperature variations. The results show that the cyclic softening is induced mainly by the kinematic hardening variables. The variation in the degree of cyclic softening with temperature variation is also discussed. Based on this information, the evolution equations of the kinematic hardening variables are formulated. By incorporating these equations into the unified model proposed previously by us, a final constitutive model is established. Monotonic, creep and cyclic tests under constant temperatures and temperature variations are simulated in order to evaluate the validity of the proposed model. The results show that the model can predict a wide range of inelastic behavior of this material with relatively high accuracy.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::4f2c8bf4e4806b2ccfa3fe982fe2cffa https://doi.org/10.1299/kikaia.62.1017 Zobrazit plný text záznamu