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《Forging & Stamping Technology》 2011-01
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Deformation and stability analysis of single crystal for single slip

LI Yue-yu,LIU Shu-chun(Department of Mechanical Engineering,Huaihai Institute of Technology,Lianyungang 222005,China)  
Deformation and stability of single crystal for single slip under simple tension were studied based on the point of meso-plastic mechanics of crystal.The change rules of the direction of slip surface and direction of slip along with the strain ε were presented quantitatively.The instability parameter S was defined and the condition of stability of plastic deformation represented by normal stress and normal strain was changed to shear stress and shears strain fitted for applying meso-plastic mechanics.The results show that the slip planes deflect to the direction of tension and trend to accordant,the larger strain ε is,the smaller λ(angle of slip direction) is and the larger χ(angle of slip surface direction)is;the larger strain ε is,the smaller the instability parameter S is.
【Fund】: 江苏省自然科学基金项目编号(BK2008189)
【CateGory Index】: O344
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