摘要
在形状记忆合金片上引入预应变可以制备成一个受热可回复的片状致动器,将其表面粘贴在复合材料结构表面便可以得到一个集承载和变形一体化的智能复合材料结构。本文主要聚焦于智能复合材料结构承载过程中的变形问题,通过有限元分析的方法对智能复合材料结构在承载时的受热致动变形能力和在受热致动变形之后的承载能力两个问题进行了分析研究。分析结果表明:智能复合材料结构在承载过程中仍然能够顺利变形,但是其变形过程中的胶层应力会受到载荷大小的影响,且相同载荷下受热致动过程加载时的胶层应力与加载过程中受热时的胶层应力相比会更大。
The introduction of pre-strain on the shape memory alloy sheet can produce a heat-reversible sheet actuator,which can be glued to the surface of the composite structure to obtain a smart composite structure with integrated load-bearing and deformation.In this paper,we focus on the deformation of the smart composite structure during the load-bearing process,and analyze the heat-activated deformation capacity during load-bearing and load-bearing capacity after heat-activated deformation of the smart composite structure by means of finite element analysis.The results show that the smart composite structure can still deform smoothly during the load-bearing process,but its deformation capacity and service life are affected by the load.And the stress of adhesive layer during the loading of the thermally actuated process under the same load will be larger compared to the adhesive layer stress during the heating of the loading process.
作者
战钺
袁国青
ZHAN Yue;YUAN Guoqing(School of Aerospace Engineering and Applied Mechanics,Tongji University,Shanghai 200092,China)
出处
《复合材料科学与工程》
CAS
北大核心
2024年第6期34-40,共7页
Composites Science and Engineering
