双气腔油气式缓冲器缓冲性能优化分析  

Performance optimization of oleo-pneumatic damper with two air chambers

作　　者：刘天辉[1,2] 李占科[2] 

机构地区：[1]91055部队 [2]西北工业大学航空学院

出　　处：《哈尔滨商业大学学报（自然科学版）》2014年第6期720-723,共4页Journal of Harbin University of Commerce：Natural Sciences Edition

摘　　要：通过对双气腔油气式缓冲器结构参数的合理设计,可以大大提高缓冲器的缓冲性能.针对某型双气腔油气式缓冲器起落架,首先建立其数学模型,利用动力学仿真软件ADAMS中的Aircraft分析模块对缓冲器性能进行仿真分析,得到一系列试验样本点;基于非线性响应面法,利用所抽取样本点,建立了设计变量和优化目标间的数学关系;以缓冲器缓冲效率为优化目标,支柱最大垂直载荷和最大行程为约束条件,对设计变量进行优化;对优化后结构参数进行模拟仿真分析,结果表明优化后结果与仿真结果偏离误差在1.2%以内,拟合函数可信度较高;优化后缓冲器效率较优化前增大4.6%,优化方法切实有效.在对缓冲器仿真分析的基础上,为起落架缓冲器的设计和改进提供一种优化方法,有一定的实用价值.The oleo-pneumatic damper with two air chambers will have optimal performance by the rational design of structure parameter. The landing gear prototyping model should be established based on an existing landing gear,dynamic analysis of the impacting with the run way procedure were simulated with the established model using ADAMS / Aircraft,some data points could be obtained. The function relationship between parameters and optimization object could be built with sample point based on the weighting nonlinear response surface method. Setting the efficiency of buffer as optimization object,the max vertical load and stroke as constraint condition,the parameters can be optimized. The conclusion suggested that there are 1. 2% difference between the optimization results and the simulation results,and the efficiency of buffer has 4. 6% increases. This paper developed a method of buffer design and improving.

关 键 词：双气腔油气式缓冲器 性能优化 响应面法分析 虚拟样机技术 ADAMS 

分 类 号：V226.2[航空宇航科学与技术—飞行器设计]