调谐质量阻尼器(TMD)是一种工程中常用的减振装置,但TMD装置的刚度和阻尼系数偏离最优值时,其减振效率将大为降低。本文研究了TMD系统在自身参数偏离下的减振有效性和可靠性问题,提出了一种切合工程实际的TMD系统自身参数随机偏离模型。在此偏离模型下,利用蒙特卡洛方法分别研究了STMD系统和MTMD系统的减振有效性和可靠性,并对两种TMD系统的差异进行了对比和分析。结果表明,TMD系统的减振有效性和可靠性与TMD系统质量比、结构阻尼比、分布TMD个数、调谐频率个数等因素有密切相关。通过对大量数值计算结果的分析,给出增强TMD系统有效性和可靠性的一些有益建议。
Abstract
Mass tuned damper (TMD) is a widely used device for suppressing vibrations in engineering, when the stiffness and damping coefficient of TMD deviate from the optimal value, its efficiency of vibration reduction will be greatly reduced. This paper mainly researched on validity and reliability of TMD for reducing vibrations, a parametric random deviation model of TMD system, which is suitable to practical engineering, was proposed. Monte Carlo Method was utilized in studying the validity and reliability of both STMD system and MTMD system for reducing vibration under this deviation model, the comparison and analysis on differences between these two kinds of TMD systems was studied. The results show that the validity and reliability is closely related to the mass ratio of TMD system, the structural damping ratio, the number of TMD and so on. Through analysis of numerical calculation results, some suggestions for increasing the validity and reliability of TMD system are proposed.
关键词
振动控制 /
TMD系统参数优化 /
参数偏离 /
减振有效性 /
减振可靠性
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Key words
vibration control /
TMD system /
deviation of parameters /
vibration suppression validity /
vibration suppression reliability
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参考文献
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脚注
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