随机与区间混合不确定情形下动力总成悬置系统的固有特性分析

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Abstract In engineering practice, various uncertainties inevitably exist in powertrain mount system (PMS) of vehicles.Here, aiming at cases of parts of PMS parameters’ information being sufficient while other parts of PMS parameters’ being deficient, firstly, PMS parameters with sufficient information were taken as random variables, while PMS parameters with deficient information were treated as interval variables.Then, the hybrid Monte-Carlo method (HMCM) was proposed to solve natural characteristics hybrid response of a PMS.Furthermore, the hybrid perturbation-central difference method (HPCDM) was proposed to quickly solve natural characteristics hybrid response of a PMS through combining Taylor expansion, random moment method and central difference one.Finally, the effectiveness of the proposed methods was verified with a numerical example, and effects of hybrid uncertainties on natural characteristics of PMS were analyzed.

Key words： powertrain mount system random variable interval variable natural frequency decoupling rate

Received: 06 August 2019 Published: 28 November 2020

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	Articles by authors
	L Hui1
	YANG Kun1
	OU Tingjun1
	SHANGGUAN Wenbin1
	YU Dejie2

Cite this article:

L Hui1,YANG Kun1,OU Tingjun1, et al. Natural characteristics of PMS with random and interval hybrid uncertainties[J]. JOURNAL OF VIBRATION AND SHOCK, 2020, 39(23): 58-63.

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http://jvs.sjtu.edu.cn/EN/ OR http://jvs.sjtu.edu.cn/EN/Y2020/V39/I23/58

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