飞机典型液压管路系统减振优化计算方法研究

Optimization Method for Aircraft Typical Hydraulic Pipeline System's Vibration Suppression

目的研究管道走向和卡箍位置对管道应力的影响。方法以飞机典型液压管路系统为优化对象,对管路系统及支持结构进行动力学参数化建模,使用MATLAB和MSC.NASTRAN构筑基于遗传算法的自动减振优化计算平台,以管壁结构和飞机支持结构的动态应力响应最小为优化目标,对管路走向(包括拐折位置、曲率半径)、卡箍位置进行优化计算,从而建立一种飞机管路系统设计中的自动减振优化计算方法。结果使用建立的减振优化计算平台优化计算设计后,飞机典型液压管路系统最大动态应力值降低了50%。结论提供的优化方法能够有效地通过优化管道布置参数降低应力水平。

The paper aims to study the influence of pipeline direction and clamp position on pipeline stress.Aircraft typical hydraulic pipeline was taken as the research object to model the dynamic parameters of the pipeline system and supporting structure.MATLAB and MSC.NASTRAN were used to construct an automatic vibration reduction optimization calculation platform.This paper took minimizing the dynamic stress response of pipe wall and supporting structures as optimization calculation target,optimized and calculated the pipeline route(including turning positions and curvature radius)and clamp positions,and finally constructed the automatic optimization calculation method in design of aircraft pipeline system.Using the automatic vibration reduction optimization calculation platform built in this paper reduced the aircraft typical hydraulic pipeline system’s maximum dynamic stress value by 50%.The optimization method provided can effectively reduce the stress level by optimizing the pipeline layout parameters.