DEFORMATION OF A SHAPE MEMORY ALLOY HELICAL SPRING - (ANALYSIS BASED ON STRESS-STRAIN-TEMPERATURE RELATION)
DEFORMATION OF A SHAPE MEMORY ALLOY HELICAL SPRING - (ANALYSIS BASED ON STRESS-STRAIN-TEMPERATURE RELATION)
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DOI：
10.1299/jsmea1988.34.1_83
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发表时间：
1991-01-01
期刊：
影响因子：
--
通讯作者：
TANAKA, K
中科院分区：
文献类型：
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作者：
TOBUSHI, H;TANAKA, K
在形状记忆合金螺旋弹簧的设计中，基于材料的应力-应变-温度关系设计弹簧的基本方法是需要解决的一个重要问题。本研究基于材料的应力-应变-温度关系分析了形状记忆合金螺旋弹簧的变形行为。讨论了载荷与弹簧挠度的关系以及变形区域的行为。主要研究结果总结如下：(1)用简单的应力-应变-温度关系模型来表示弹簧载荷与挠度之间的关系。(2)在一定的最大挠度下，可恢复力和可恢复应变能随温度的升高而增大。耗散应变能在一定温度下达到最大值。(3)在加载过程中，导线截面上的变形区域从表面向中心膨胀，而在卸载过程中则向表面收缩。在一定的最大挠度下，变形区域很小，但载荷随温度的升高而增大。
In the design of a shape memory alloy helical spring, a basic method of designing the spring based on the stress-strain-temperature relation of the material is an important problem to be solved. In the current study, the deformation behavior of the shape memory alloy helical spring was analyzed based on stress-strain-temperature relation of the material. The relationship between load and deflection of the spring as well as the behavior of transformed region is discussed. The main results are summarized as follows. (1) The relation between the load and deflection of the spring is represented by using a simple model of the stress-strain-temperature relation. (2) For a certain maximum deflection, recoverable force and recoverable strain energy increase with temperature. Dissipated strain energy takes a maximum value at a certain temperature. (3) The transformed region in the cross section of the wire expands into the center from the surface under the loading process, but contracts toward the surface under the unloading process. For a certain maximum deflection, the transformed region is small but the load increases as the temperature increases.