Orientation element based constitutive model and lattice model

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	Orientation element based constitutive model and lattice model
	Liu XY(刘晓宇); Deng SC(邓守春); Liang NG(梁乃刚)
	2004
会议名称	6th World Congress on Computational Mechanics held in conjunction with the 2nd Asian-Pacific Congress on Computational Mechanics
会议日期	SEP 05-10, 2004
会议地点	Beijing, PEOPLES R CHINA
通讯作者	Liang, NG (reprint author), Chinese Acad Sci, Inst Mech, LNM, Beijing 100080, Peoples R China.
中文摘要	A general formulation of, the Helmholtz free energy used in thermodynamics is derived within the framework of the embedded-atom method with the Cauchy-Born rule. Such a physics-based thermodynamic state potential does not directly incorporate the interatomic potentials and atomic structure of a material, but subsumes the statistical ensemble average of the action of the entirety of microscopic degrees of freedom. The constitutive behavior of a non-dissipative material is therefore entirely determined by this free energy, and is not subject to length and time scale limitations. Moreover, it is proved that the contribution of the two-body potential to the free energy is expressed as the integral of potentials defined in different orientation over the hemisphere, and individual potential in each orientation yields ID constitutive law. Consequently, the discretization of the integration furnishes a unified framework for the development of the truss lattice models for computational micromechanics, as well as of the truss-type lattice structured materials in engineering applications.
收录类别	CPCI-S
会议录	Computational Mechanics, Proceedings
会议录出版者	TSINGHUA UNIVERSITY PRESS
会议录出版地	BEIJING ; TSINGHUA UNIVERSITY HAIDIANQU, BEIJING 100084, PEOPLES R CHINA
语种	英语
ISBN号	7-302-09343-1
WOS记录号	WOS:000231353600062
内容类型	会议论文
源URL	[http://dspace.imech.ac.cn/handle/311007/58911]
专题	力学研究所_力学所知识产出(1956-2008)
推荐引用方式 GB/T 7714	Liu XY,Deng SC,Liang NG. Orientation element based constitutive model and lattice model[C]. 见:6th World Congress on Computational Mechanics held in conjunction with the 2nd Asian-Pacific Congress on Computational Mechanics. Beijing, PEOPLES R CHINA. SEP 05-10, 2004.