Elasto-plastic analysis of micro FGM beam basing on mechanism-based   strain gradient plasticity theory

doi:10.1016/j.compstruct.2013.01.027

CORC > 北京大学 > 工学院

	Elasto-plastic analysis of micro FGM beam basing on mechanism-based strain gradient plasticity theory
	Mao, Y. Q. ; Ai, S. G. ; Fang, D. N. ; Fu, Y. M. ; Chen, C. P.
刊名	composite structures
	2013
关键词	Strain gradient Functionally graded Size effect Kinematic hardening FINITE-ELEMENT IMPLEMENTATION LENGTH SCALE PARAMETER COMPOSITE-MATERIALS CONVENTIONAL THEORY CYCLIC PLASTICITY FREE-ENERGY VISCOPLASTICITY STRESS INDENTATION DISLOCATION
DOI	10.1016/j.compstruct.2013.01.027
英文摘要	Using the consistent thermodynamic formulations, a mixed hardening plastic model based on conventional theory of mechanism-based strain gradient plasticity is built and applied in dynamic analysis of micro-functionally graded material beam. In this mixed kinematic hardening constitutive model, the plastic strain gradient only affects flow stress to reflect size effect as that in the MSG theory [1,2] based on Taylor dislocation model. No higher stress is introduced in present constitutive relations which makes it easy and straightforward to be implemented in a finite element code. By incorporating proposed constitutive model with use of subroutine UMAT in finite element ABQUS basing on implicit stress integration, the static and dynamic analysis on micro FGM beam has been carried out. Two numerical comparisons with experimental results and other numerical results demonstrate the applicability of present constitutive model on prediction of plastic behaviors of materials. In application of present constitutive model in mechanical analysis of micro FGM beam, some numerical examples are carried out for parameters analysis on mechanical properties of micro FGM beam and some useful conclusions have been obtained which are of theoretical significance for engineering application. (C) 2013 Elsevier Ltd. All rights reserved.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000318127400014&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Materials Science, Composites; SCI(E); EI; 4; ARTICLE; 168-179; 101
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/154460]
专题	工学院
推荐引用方式 GB/T 7714	Mao, Y. Q.,Ai, S. G.,Fang, D. N.,et al. Elasto-plastic analysis of micro FGM beam basing on mechanism-based strain gradient plasticity theory[J]. composite structures,2013.
APA	Mao, Y. Q.,Ai, S. G.,Fang, D. N.,Fu, Y. M.,&Chen, C. P..(2013).Elasto-plastic analysis of micro FGM beam basing on mechanism-based strain gradient plasticity theory.composite structures.
MLA	Mao, Y. Q.,et al."Elasto-plastic analysis of micro FGM beam basing on mechanism-based strain gradient plasticity theory".composite structures (2013).