Dropping shock dynamic performance evaluation of suspension system based on NHB method

被引：0
|
作者：
Du X.-D. [1 ,3 ]
Chen A.-J. [1 ,2 ]
机构：
[1] School of Mechanical Engineering, Jiangnan University, Wuxi
[2] China National Control and Testing Center for Packaging Quality, Wuxi
[3] Institue of Postal Scientific Research and Planning, Beijing
来源：
Chen, An-Jun (caj62@126.com) | 1600年 / Nanjing University of Aeronautics an Astronautics卷 / 33期
关键词：
Approximate solution; Damage evaluation; Newton-harmonic balancing method; Nonlinearity; Suspension spring system;
D O I：
10.16385/j.cnki.issn.1004-4523.2020.02.013
中图分类号：
学科分类号：
摘要：
The Newton-harmonic balancing method is applied to solve a non-dimensional nonlinear dynamic equation of the suspension system under the condition of dropping shock. The first-order, second-order and third-order approximate solutions of dimensionless displacement and acceleration response are obtained. Analytical expressions of important parameters including dimensionless displacement peak, acceleration peak and dropping shock time are also given. Comparisons with Runge-Kutta method and variational iteration method are provided to illustrate the effectiveness of Newton-harmonic balancing method. The example analysis results show that the second-order and third-order approximate solutions by Newton-harmonic balancing method can meet the engineering design requirements, and third-order approximate solution has higher accuracy than the second-order approximate solution. Based on the approximate solution of Newton-harmonic balancing method, a damage evaluation algebraic equation of the system under dropping shock is established, which makes it more convenient to get the system damage boundary curve and analyze influence of related system parameters. This article provides an effective analysis method for dropping damage evaluation of nonlinear systems. © 2020, Nanjing Univ. of Aeronautics an Astronautics. All right reserved.
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页码：331 / 337
页数：6
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