非対称復元力特性を示す車乮用ダンパーアセンブリの振動応答解析

摘要

It is commonly recognized that characteristics of damper assembly significantly affect to vehicle dynamics. However, approach to understand its dynamic characteristics is dependent on physical testing, and effects of each component are hard to examine in detail. Therefore, the main subject of this study is to develop a method which gives easy way for designers in examining each component of damper assembly. Conventional analytical method of equivalent linear system using the restoring force model of power function type was modified and applied to damper assembly modeling. By comparison between analysis and experiment of vibration response, the validity of this modeling method was confirmed.%車両のサスペンションを構成する部品の一つであるrnダンパーアセンブリ（図1）の特性は，車両の運動性能にrn大きく影響を与える．ダンパーアセンブリを構成するrn個々の要素の多くは，入力荷重の振幅及び周波数に対rnして非線形ばね特性を示す．また，これらの構成要素rnの中には，車両への実装状態において，そのストローrnク方向に対して非対称復元力特性を示すものもある.