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	Experimental study on fracture behavior of linear functionally gradient materials
	Xu Wei ; Yao Xuefeng
	2010-10-12 ; 2010-10-12
关键词	Experimental/ bending casting elastic constants finite element analysis fracture functionally graded materials materials preparation photography shear modulus/ dynamic fracture behaviours linear functional gradient materials FGM shear modulus speed photography method finite element method elastic solution iterative numerical method material synthesis three-point-bending gravity-assisted vertical casting process dynamic stress static stress stiffness variations/ A8140N Fatigue, embrittlement, and fracture A6220D Elasticity, elastic constants A8140J Elasticity and anelasticity A6220F Deformation and plasticity A8140L Deformation, plasticity and creep A8120 Other methods of preparation of materials A6220M Fatigue, brittleness, fracture, and cracks
中文摘要	Static and dynamic fracture behaviors of functionally gradient materials (FGMs) with linear variation of the shear modulus are experimentally studied with caustics method and high speed photography technique, and numerically investigated through finite element method (FEM). Firstly the caustics equations relative to the caustics principles and the elastic solution at mode I crack in FGMs are deduced through an iterative numerical method. Three kinds of specimens with different variation of shear modulus are synthesized by a gravity-assisted vertical casting process. Then three-point-bending experiments are performed and the caustics patterns are shot through CCD and high speed photography equipment. The static and dynamic stress intensity factors of FGMs specimens are obtained through caustics method. Finally, The experimental results are validated with the numerical results to investigate the influences of the stiffness variation on the static and dynamic fracture characteristics.
语种	中文
出版者	Chinese Journal of Mechanics Press ; China
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/79093]
专题	清华大学
推荐引用方式 GB/T 7714	Xu Wei,Yao Xuefeng. Experimental study on fracture behavior of linear functionally gradient materials[J],2010, 2010.
APA	Xu Wei,&Yao Xuefeng.(2010).Experimental study on fracture behavior of linear functionally gradient materials..
MLA	Xu Wei,et al."Experimental study on fracture behavior of linear functionally gradient materials".(2010).

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