{"title":"SMA钢丝夹层梁固有频率位移的实验研究","authors":"D. J. More, S. B. Kumbhar","doi":"10.1109/ICANMEET.2013.6609383","DOIUrl":null,"url":null,"abstract":"In this paper an experimental study of dynamic behavior of sandwich beam with elastomeric core embedded with shape memory alloy (SMA) wires is done. The three pre-strained Ni 50%, Ti 50% wires with 10 mm offset from neutral axis are used. The wires are embedded along the length of rectangular beam and elastomeric core is sandwiched between two copper plates. The beam is tested for free-free boundary condition and average 48% shift in natural frequency is observed when the stiffness of beam is changed by heating the wire by 4.5 amp electric current. The effect of actuation current on damping factor and time required to regain its original frequency, after making current zero, is estimated and presented.","PeriodicalId":13708,"journal":{"name":"International Conference on Advanced Nanomaterials & Emerging Engineering Technologies","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2013-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":"{\"title\":\"An experimental study on shift in natural frequency of sandwich beam with elastomeric core embedded with SMA wires\",\"authors\":\"D. J. More, S. B. Kumbhar\",\"doi\":\"10.1109/ICANMEET.2013.6609383\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"In this paper an experimental study of dynamic behavior of sandwich beam with elastomeric core embedded with shape memory alloy (SMA) wires is done. The three pre-strained Ni 50%, Ti 50% wires with 10 mm offset from neutral axis are used. The wires are embedded along the length of rectangular beam and elastomeric core is sandwiched between two copper plates. The beam is tested for free-free boundary condition and average 48% shift in natural frequency is observed when the stiffness of beam is changed by heating the wire by 4.5 amp electric current. The effect of actuation current on damping factor and time required to regain its original frequency, after making current zero, is estimated and presented.\",\"PeriodicalId\":13708,\"journal\":{\"name\":\"International Conference on Advanced Nanomaterials & Emerging Engineering Technologies\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2013-07-24\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"2\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"International Conference on Advanced Nanomaterials & Emerging Engineering Technologies\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/ICANMEET.2013.6609383\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Conference on Advanced Nanomaterials & Emerging Engineering Technologies","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICANMEET.2013.6609383","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 2
摘要
本文对形状记忆合金(SMA)钢丝嵌入弹性芯的夹层梁的动力特性进行了实验研究。使用三根预应变Ni 50%， Ti 50%导线，与中性轴偏移10mm。导线沿矩形梁的长度嵌入，弹性体芯夹在两块铜板之间。在自由-自由边界条件下对梁进行了测试，当用4.5安培的电流加热导线改变梁的刚度时，其固有频率平均变化48%。估计并给出了驱动电流对阻尼系数和使电流为零后恢复到原频率所需时间的影响。
An experimental study on shift in natural frequency of sandwich beam with elastomeric core embedded with SMA wires
In this paper an experimental study of dynamic behavior of sandwich beam with elastomeric core embedded with shape memory alloy (SMA) wires is done. The three pre-strained Ni 50%, Ti 50% wires with 10 mm offset from neutral axis are used. The wires are embedded along the length of rectangular beam and elastomeric core is sandwiched between two copper plates. The beam is tested for free-free boundary condition and average 48% shift in natural frequency is observed when the stiffness of beam is changed by heating the wire by 4.5 amp electric current. The effect of actuation current on damping factor and time required to regain its original frequency, after making current zero, is estimated and presented.
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