飞行器地面运输载荷分析算法及软件设计  

Algorithm and software design for spacecraft ground transportationload analysis

作　　者：武晨滔 邓忠民[1] Wu Chentao;Deng Zhongmin(School of Astronautics,Beihang University,Beijing 100191,China)

机构地区：[1]北京航空航天大学宇航学院,北京100191

出　　处：《空天技术》2023年第2期58-65,共8页Aerospace Technology

基　　金：国家重点研发计划资助(2021YFC2202801)。

摘　　要：地面运输过程中空天飞行器总体呈水平状态,载荷状态具有弯剪载荷结合、动静载荷结合的特点。研究了飞行器地面运输载荷的工程算法。基于解析算法分析了弹性支承对空天飞行器载荷分布的影响;基于谱密度方法进行了随机路面数据重构,并基于Duhamel积分对飞行器动载荷进行了求解。设计并开发了专门用于飞行器地面运输环境的载荷分析软件,软件可以对数据进行分析并建立结构支承模型;仿真地面不平度传导至结构的动静载荷并求解响应以及飞行器结构各部位所受弯矩、剪力、挠度等载荷数据。与商业软件分析结果对比,软件设计合理,结果准确。Spacecraft is generally in a horizontal state during the process of road transportation,the load state of spacecraft is characterized by the bend-shear combined and dynamic-static combined load.Engineering algorithm is demonstrated for spacecraft ground transportation load analysis.The analytic method is used in statically indeterminate beam solution,the influence of non-rigid support is considered in solution of supports'reaction.The power spectral density(PSD)method is used to simulate road excitation signal.The Duhamel integral is used to solve the dynamic response.A software is developed for engineering application which is capable for spacecraft modeling,excitation simulating,respond solving and calculation of bending moment,shear force and deflection.Result comparation between ANSYS and this software shows that the algorithm is correct and software design is reasonable.

关 键 词：飞行器 地面运输 载荷分析 超静定梁 路面仿真 

分 类 号：V421.1[航空宇航科学与技术—飞行器设计] TP319[自动化与计算机技术—计算机软件与理论]