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首页> 外文会议>International Symposium on Eco-Materials Processing amp; Design; 20060108-11; Chengdu(CN) >Vibration-damping Capacity of Lotus-type Porous Magnesium at Room Temperature
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Vibration-damping Capacity of Lotus-type Porous Magnesium at Room Temperature

机译：莲花型多孔镁在室温下的减振能力

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摘要

Lotus-type porous magnesium with a large number of unidirectional cylindrical pores was fabricated by unidirectional solidification of melt dissolving hydrogen in a pressurized hydrogen atmosphere. The vibration-damping capacity of the lotus-type porous magnesium plate which has many open pores was measured in this work. The attenuation coefficients of the free vibration of lotus-type porous magnesium were measured by hammering-vibration-damping test, which revealed that the attenuation coefficients increase with increase in porosity; the damping capacity of lotus magnesium is higher than that of non-porous magnesium. The mechanism for high damping capacity was analyzed on the basis of the Fourier transform technique, which indicates that various vibration modes of high frequency are observed. The excited vibrations of high frequency enhance the damping capacity of lotus-type porous magnesium.
机译：通过在加压的氢气氛中将氢溶解的熔体进行单向凝固，制得具有大量单向圆柱孔的莲花型多孔镁。在这项工作中，测量了具有许多开孔的莲花型多孔镁板的减振能力。通过锤击-振动-阻尼试验测量了莲花型多孔镁自由振动的衰减系数，结果表明，衰减系数随孔隙度的增加而增加。莲花镁的阻尼能力要高于无孔镁。在傅立叶变换技术的基础上分析了高阻尼能力的机理，表明观察到了各种高频振动模式。高频激发振动增强了莲花型多孔镁的阻尼能力。

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