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首页> 外文期刊>Proceedings of the Institution of Mechanical Engineers. Part L, Journal of Materials: Design and Application >Semi-active vibration control of SiC-reinforced AI6082 metal matrix composite sandwich beam with magnetorheological fluid core
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Semi-active vibration control of SiC-reinforced AI6082 metal matrix composite sandwich beam with magnetorheological fluid core

机译：具有磁流变液芯的SiC增强AI6082金属基复合夹层梁的半主动振动控制

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摘要

Dynamic characterization of silicon carbide particles reinforced Al6082 alloy metal matrix composite sandwich beam with magnetorheological fluid core is experimentally investigated. The study is focused on determining the effect of magnetorheological fluid core on the dynamic behavior of the sandwich structure. The magnetorheological fluid core is enclosed between the top and bottom metal matrix composite beams. The metal matrix composite beams are cast with silicon carbide particles in Al6082 alloy varying from 0 to 20 wt%. The magnetorheological fluid is prepared in-house and contains 30 vol.% carbonyl iron powder and 70 vol.% silicone oil. The free vibration test is conducted to determine the natural frequencies and damping ratio. It is found that the natural frequencies and damping ratio of the sandwich beams increased with an increase in the applied magnetic flux density. The experimental forced dynamic response of sandwich beams is carried out using sine sweep excitation. Vibration amplitude suppression capabilities of the sandwich beams subjected to varying magnetic flux densities are determined. The experimental forced vibration results reveal that metal matrix composite-magnetorheological fluid core sandwich beams have excellent vibration amplitude suppression capabilities.
机译：实验研究了具有磁流变液芯的碳化硅颗粒增强Al6082合金金属基复合夹芯梁的动力特性。该研究的重点是确定磁流变液芯对夹层结构动力学行为的影响。磁流变液芯封闭在顶部和底部金属基体复合梁之间。金属基复合材料梁由Al6082合金中碳化硅颗粒铸造而成，碳化硅颗粒的含量为0至20 wt％。磁流变液是在内部制备的，包含30％（体积）的羰基铁粉和70％（体积）的硅油。进行自由振动测试以确定固有频率和阻尼比。发现夹层梁的固有频率和阻尼比随着施加的磁通密度的增加而增加。夹层梁的实验强制动态响应是使用正弦波扫描激励进行的。确定经受变化的磁通量密度的夹层梁的振动幅度抑制能力。实验强迫振动结果表明，金属基复合磁流变液芯夹层梁具有优异的减振能力。

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