形状记忆合金对平板的刚度主动控制及优化布置研究

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振动与冲击 ›› 2014, Vol. 33 ›› Issue (23) : 30-36.

论文

形状记忆合金对平板的刚度主动控制及优化布置研究

王明义1，季宏丽1，裘进浩1，张超1

作者信息 +

Active stiffness control of a plate structure using shape memory alloys and layout optimization

WANG Ming-yi 1, JI Hong-li 1, QIU Jin-hao 1, ZHANG Chao 1

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文章历史 +

摘要

研究了基于形状记忆合金（Shape memory alloys，简称SMA）的平板结构刚度主动控制方法，提出了驱动器在平板上的布置形式。通过建立分析有限元模型并结合试验验证主动控制效果，结果表明利用形状记忆合金产生的回复应力可以显著地改变结构的刚度；通过调节形状记忆合金的驱动温度、含量和布置方式可以有效地控制结构刚度。在此基础上进一步采用遗传优化算法对驱动器布局方式进行优化，优化后的布置方案可实现利用较少的SMA驱动器提高刚度控制效果，为利用形状记忆合金实现对结构的刚度控制提供参考和借鉴。

Abstract

Active stiffness control of plate structure using shape memory alloys is investigated and the layout optimization of actuators on the plate is presented. A FEM model is established to analyze the active control effect and the simulation results were validated by experimental results. The results indicate that the recovery stress of SMA is the main factor in change of structural stiffness. They also show that the effectiveness of this method in stiffness control depends on the temperature, volume ratio, and arrangement of SMA actuators. Furthermore, the layout of SMA actuators is optimized by using a genetic algorithm. The results show that the optimized layout is more effective in stiffness control than the original layout.

导出引用

王明义;季宏丽;裘进浩;张超. 形状记忆合金对平板的刚度主动控制及优化布置研究[J]. 振动与冲击, 2014, 33(23): 30-36

WANG Ming-yi;JI Hong-li;QIU Jin-hao;ZHANG Chao . Active stiffness control of a plate structure using shape memory alloys and layout optimization[J]. Journal of Vibration and Shock, 2014, 33(23): 30-36