摘要
研究了嵌入形状记忆合金(SMA)纤维复合材料变截面板弹簧的刚度性能。首先分析一类常用SMA材料的基本力学性能,讨论了基于Brinson本构模型下的受限回复特性。在建立具有SMA纤维的各向异性层合梁的本构方程的基础上,利用瑞利-利兹能量法求板簧的挠度,给出板簧刚度的表达式。最后,运用MATLAB进行数值计算,得到了SMA纤维复合材料变截面板簧刚度随温度、铺层角、SMA含量的变化关系曲线,揭示了SMA纤维复合材料变截面板簧的刚度可调节机理。
The stiffness property of the section-changed plate spring with fiber composite materials embedded shape memory alloy（SMA） was studied.First,basic mechanical properties of the SMA material most in use was analyzed and restrained recovery characteristics based on the Brinson constitutive model were discussed.Based on the establishment of constitutive equation of SMA fiber anisotropic laminated beam,the deflection of the plate spring is derived by means of Rayleigh-Ritz energy method,and then,the stiffness expression of plate spring was given.At last,the numerical calculation was conducted by using MATLAB and the relational curves of stiffness of section-changed plate spring with SMA fiber composite materials as the temperature,ply angle and SMA content varied were obtained,revealing the adjustable mechanism of stiffness of section-changed plate spring with SMA fiber composite materials.
出处
《山东科技大学学报（自然科学版）》
CAS
2011年第1期96-102,共7页
Journal of Shandong University of Science and Technology(Natural Science)
关键词
形状记忆合金
纤维复合材料
变截面板簧
瑞利-利兹法
刚度
shape memory alloys（SMA）
fiber composite materials
section-changed plate spring
Rayleigh-Ritz method
stiffness
