M2052高阻尼合金在結(jié)構(gòu)件減振中的應(yīng)用研究

M2052高阻尼合金在結(jié)構(gòu)件減振中的應(yīng)用研究Research of M2052 high vibration reduction damping alloy applied in the of structural component

利用動(dòng)態(tài)熱機(jī)械分析儀(DMA)、有限元分析軟件Patran&Nastran和振動(dòng)測(cè)試設(shè)備(DH5981),研究了M2052合金的阻尼性能及應(yīng)用在支撐底座中的減振性能.振動(dòng)測(cè)試結(jié)果與有限元分析結(jié)果比較吻合.結(jié)果表明:在頻率響應(yīng)分析中,M2052的應(yīng)用能夠有效降低振動(dòng),明顯減小振動(dòng)源產(chǎn)生的振動(dòng)經(jīng)支撐底座的傳遞;在瞬態(tài)響應(yīng)分析中,通過振動(dòng)衰減曲線對(duì)比看出,阻尼合金應(yīng)用到工字型支座能更快的耗散振動(dòng)能量,在一定范圍內(nèi)阻尼合金的應(yīng)變?cè)酱?阻尼性能越好,所以S型支座能提供更大的減振性能;同時(shí),通過力錘敲擊實(shí)驗(yàn)驗(yàn)證了M2052合金在結(jié)構(gòu)件中的應(yīng)用能有效降低機(jī)械振動(dòng),且應(yīng)變?cè)酱笾ё臏p振效果越好。

Dynamic thermal mechanical analyzer （DMA）, finite element analysis software Patran＆Nastran and vibration testing equipment （DH5981） were used to study the damping properties of M2052 alloy and the vibration damping perfor- mance applied in the support pedestals. The vibration test result was consistent with that of finite element analysis. The frequency response analysis showed that the application of M2052 can effectively reduce the vibration of the support pedestals, and the transmission of vibration produced by the vibration source was significantly reduced by the support pedestals. In transient response analysis, by comparing the vibration attenuation curve, it can support faster vibration ener- gy dissipation when damping alloy is applied to the I-shaped support pedestal. Within a certain range, the strain is larger, the performance of damping is better, thus S-shaped support pedestals can provide greater vibration reduction perfor- mance. At the same time, the force hammer percussion experiments has verified that the application of M2052 alloy in the structures can effectively reduce the mechanical vibration, and the strain is larger, the vibration damping effect of support pedestals is greater.

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