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首页> 外文期刊>International journal of mechanics and materials in design >Parameter optimization of a metal foam magneto- rheological damper
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Parameter optimization of a metal foam magneto- rheological damper

机译：金属泡沫磁流变阻尼器的参数优化

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摘要

A new metal foam magneto-rheological (MR) fluid damper is optimized, and the mechanical performance is investigated experimentally. With a magnetic field, MR fluid is extracted from the metal foam and fills up the shear gap to produce the MR effect. The magnetic field density in the shear gap and the structural parameters are taken as the optimization object, and the optimal parameters of the metal foam MR fluid damper are updated. A testing system, including a DC motor with a speed controller, a force sensor with an amplifier and a power supply, is built to investigate the shear force of the metal foam MR fluid damper. The test signals are gathered and processed by a DAQ and a PC with LabVIEW software. A timer is designed to synchronize the start of the magnetic field. The experimental results show that the shear force decreases as the shear rate increases, and for the same shear rate, when the current ranges from 0.5 to 1.0 A, the difference of the shear force in the metal foam MR fluid damper is the most obvious. Additionally, the shear force after optimization clearly increases. When the current increases gradually, the shear force also increases. When the excited current increases from 0.5 to 1.5 A, as the current increases, the shear force increases obviously; however, once the current is above 1.5 A, the increase of the shear force is no longer obvious. In addition, for a shear rate of 2 s(-1) and a current of 1.0 A, the shear force of the metal foam MR fluid damper is improved by a factor of 1.46 compared to the value before optimization.
机译：优化新的金属泡沫磁流变（MR）流体阻尼器，实验研究了机械性能。利用磁场，将MR流体从金属泡沫中提取并填充剪切间隙以产生MR效应。剪切间隙和结构参数中的磁场密度作为优化对象，并且更新了金属泡沫MR流体阻尼器的最佳参数。构建了一种测试系统，包括具有速度控制器的直流电动机，具有放大器的力传感器和电源，以研究金属泡沫MR流体阻尼器的剪切力。使用LabVIEW软件的DAQ和PC收集和处理测试信号。定时器旨在同步磁场的开始。实验结果表明，当剪切速率增加时，剪切力减小，并且对于相同的剪切速率，当电流范围为0.5至1.0a时，金属泡沫MR流体阻尼器中的剪切力差是最明显的。另外，优化后的剪切力明显增加。当电流逐渐增加时，剪切力也增加。当励磁电流从0.5到1.5a增加时，随着电流的增加，剪切力明显增加;然而，一旦电流高于1.5 A，剪切力的增加不再是明显的。另外，对于2 s（-1）的剪切速率和1.0a的电流，与优化前的值相比，金属泡沫MR流体阻尼器的剪切力提高了1.46因子。

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