磁控形状记忆合金作动器设计及其控制效果
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摘要
为探索磁控形状记忆合金(MSMA)可作为一种在振动控制领域中可推荐的新型智能驱动材料,在对其力学性能的研究中,给出其输出控制力的变化规律,继后自行研制MSMA作动器,确定MSMA材料的外形尺寸、变形恢复装置、磁路设计等重要的因素。建立平面直径为80m单层球面网壳结构,按照三种方案设置基于MSMA作动器的控制元件,并应用反应谱计算了竖向地震荷载作用下的响应,通过和无控结构的响应进行对比分析取得MSMA的控制效果。结果表明,MSMA主动控制元件对大跨网壳结构的振动控制效果很明显,是一种理想的智能驱动材料,有着广阔的应用前景。
In order that the magnetic shape memory alloy(MSMA) can be more conveniently applied to civil engineering structure's vibration control,the mechanical properties of MSMA are studied,and the output of the control force of MSMA is given.Active control components made of MSMA are developed independently.The shape and size of the MSMA materials in the actuator are determined.Deformation recovery device and magnetic circuit are designed.Model of the single-layer reticulated spherical shell structure of 80m diameter is established.Three schemes for arrangement of the MSMA intelligent control elements are designed and realized.The response spectrum is applied to calculate the response of these elements to vertical seismic excitation.Through the comparative analysis of the results with those of the response without control,it is found that the MSMA control is efficient,and the effect of MSMA active control elements is obviously good.Thus,MSMA is a kind of ideal intelligent drive materials,and has wide application prospects.
In order that the magnetic shape memory alloy(MSMA) can be more conveniently applied to civil engineering structure's vibration control,the mechanical properties of MSMA are studied,and the output of the control force of MSMA is given.Active control components made of MSMA are developed independently.The shape and size of the MSMA materials in the actuator are determined.Deformation recovery device and magnetic circuit are designed.Model of the single-layer reticulated spherical shell structure of 80m diameter is established.Three schemes for arrangement of the MSMA intelligent control elements are designed and realized.The response spectrum is applied to calculate the response of these elements to vertical seismic excitation.Through the comparative analysis of the results with those of the response without control,it is found that the MSMA control is efficient,and the effect of MSMA active control elements is obviously good.Thus,MSMA is a kind of ideal intelligent drive materials,and has wide application prospects.
引文
[1]翁光远,王社良.磁控形状记忆合金在结构振动控制中的应用研究[J].西安建筑科技大学学报(自然科学版)2010,42(5)631-636.
[2]Su L,Dong S L,Kato S.Seismic design for steel trussedarch to multi-support excitations[J].Journal ofConstructional Steel Research,2007,63(6):725-734.
[3]曹资,张毅刚.单层球面网壳地震反应特征分析[J].建筑结构,1998,(8):40-43.
[4]王凤翔,李文君,张庆新.差动式磁控形状记忆合金执行器研究[J].中国电机工程学报,2005,25(18):135-139.
[5]白凤龙,李宏男,王国新.多点输入下大跨结构反应谱分析方法研究进展[J].地震工程与工程振动,2008,28(4):35-42.
[6]李宏男.结构多维抗震理论与设计方法[M].北京:科学出版社,1998.
[7]沈世钊.大跨空间结构理论研究和工程实践[J].中国工程科学,2001,3(3):34-41.
[2]Su L,Dong S L,Kato S.Seismic design for steel trussedarch to multi-support excitations[J].Journal ofConstructional Steel Research,2007,63(6):725-734.
[3]曹资,张毅刚.单层球面网壳地震反应特征分析[J].建筑结构,1998,(8):40-43.
[4]王凤翔,李文君,张庆新.差动式磁控形状记忆合金执行器研究[J].中国电机工程学报,2005,25(18):135-139.
[5]白凤龙,李宏男,王国新.多点输入下大跨结构反应谱分析方法研究进展[J].地震工程与工程振动,2008,28(4):35-42.
[6]李宏男.结构多维抗震理论与设计方法[M].北京:科学出版社,1998.
[7]沈世钊.大跨空间结构理论研究和工程实践[J].中国工程科学,2001,3(3):34-41.
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