空心悬臂梁在SMA层驱动下的变形分析  

Induced deformation analysis of the cantilever box beam with SMA layers bonded to faces of wall

作　　者：杨树莲[1,2] 王晓辉[3] 任勇生[3] 王灿林[2] 

机构地区：[1]山东工商学院计算机系,山东烟台264005 [2]海军航空工程学院研究生管理大队,山东烟台264001 [3]山东科技大学机械电子工程学院,山东青岛266510

出　　处：《煤炭学报》2009年第12期1724-1728,共5页Journal of China Coal Society

基　　金：国家安全生产监督管理总局安全生产科技发展指导性计划资助项目(08-122;07-383);山东省自然科学基金资助项目(Y2006F37);山东工商学院2008年校内重点项目

摘　　要：基于经典的复合材料梁理论、Tanaka的SMA应力应变关系以及Lin的线性相变动力模型,研究了矩形空心悬臂梁在SMA驱动下的变形特性,建立了结构应力、应变、位移求解的数学模型,通过数值计算揭示了SMA层对该类结构的驱动作用,分析了温度、壁厚度以及SMA残余应变的影响.研究表明,在马氏体向奥氏体转变过程中,空心悬臂梁在SMA层的驱动下产生显著的横向位移,SMA层厚度、残余应变是影响SMA的变形驱动性能的敏感参数.Presented static deformation control of a cantilever box beam by using shape memory alloy （SMA） layers. A general analytical model applicable to explicit solution for strain, stress and displacements of the SMA composite thin-walled box section beams subjected to thermally-driven was developed. SMA layers model was based on Tanaka＇ s constitutive equation and Lin＇ s linear phase transformation kinetics. The force-deformation relationships equations were derived from the classical lamination theory. Numerical results show that significant transverse deflection can be induced in the thin-walled box section beam during the phase transformation due to SMA actuation. The effects of thickness of the beam wall and the martensitic residual strain of SMA layers are also addressed.

关 键 词：空心悬臂梁 形状记忆合金(SMA) 变形控制 

分 类 号：V257[一般工业技术—材料科学与工程]