QQ客服 官方微博 反馈留言

	An elastic-plastic constitutive framework for micropolar continua
	Huang, Zhu-ping ; Hu, Geng-kai ; Zhang, Hong-wu
	2007
关键词	BASIC LAWS PRINCIPLES RENEWAL
英文摘要	In this paper, a rate-type constitutive framework in micropolar plasticity is presented. in order to describe the plastic dissipation in the deformation process, a set of internal variables is introduced, thus the Helmholtz free energy can be expressed as a function of the non-symmetric strain, rotation and internal variables. By the introduction of the loading (yield) surfaces both in the non-symmetric strain and rotation space, and in the work conjugate non-symmetric stress and couple stress space, a loading-unloading criterion for a micropolar plastic material is suggested, and three types of material response, namely hardening, softening and perfectly plastic behaviors are discussed. Based on a mechanical postulate of non-negative work proposed by the present authors, the normality condition and. the corresponding incremental constitutive relations are derived. The present results can be applied for the description of path-dependent mechanical behaviors of micropolar elastic-plastic materials.; Computer Science, Theory & Methods; Engineering, Mechanical; Mathematics, Applied; Mechanics; CPCI-S(ISTP); 0
语种	英语
内容类型	会议论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/406529]
专题	工学院
推荐引用方式 GB/T 7714	Huang, Zhu-ping,Hu, Geng-kai,Zhang, Hong-wu. An elastic-plastic constitutive framework for micropolar continua[C]. 见:.

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。