拓扑优化机载控制台的整机随机振动分析与试验
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摘要
机载控制台是飞机电子设备的重要组成部分,随机振动是使其结构失效的主要因素。基于ANSYS Workbench软件平台对某机载控制台所处的实际工作环境进行随机振动模拟分析,分别获得了传统设计、拓扑优化设计下控制台整机方向的位移、等效应力云图;对拓扑优化控制台进行随机振动可靠性试验,获得了某特征点的随机振动加速度响应曲线。模拟分析和实际可靠性测试结果表明:拓扑优化控制台结构刚度大、动态性能好,满足强度要求,结构设计合理、可靠;所建立的有限元分析模型是合理的,所获得的仿真结果是可信的。这为机载设备的设计提供理论参考。
Airborne console is an important part of aircraft electronic equipment and random vibration is the main factor to the failure of its structure.On ANSYS Workbench software platform,the random vibration simulation analysis of an airborne console was carried out in the real working environment,and the direction displacements and the equivalent stress clouds of the whole machine based on traditional design and topology optimization design methods were obtained.The random vibration reliability test of the topology optimization console was carried out,and the random vibration acceleration response curve of a characteristic point was obtained.The results of simulation analysis and practical reliability test show that,the topological optimization console structure has good stiffness and dynamic performance,and the console can meet the strength requirements and the structural design is reasonable and reliable.The established finite element analysis model is reasonable,and the simulation results obtained are credible.This provides a theoretical basis for the design of airborne equipment.
Airborne console is an important part of aircraft electronic equipment and random vibration is the main factor to the failure of its structure.On ANSYS Workbench software platform,the random vibration simulation analysis of an airborne console was carried out in the real working environment,and the direction displacements and the equivalent stress clouds of the whole machine based on traditional design and topology optimization design methods were obtained.The random vibration reliability test of the topology optimization console was carried out,and the random vibration acceleration response curve of a characteristic point was obtained.The results of simulation analysis and practical reliability test show that,the topological optimization console structure has good stiffness and dynamic performance,and the console can meet the strength requirements and the structural design is reasonable and reliable.The established finite element analysis model is reasonable,and the simulation results obtained are credible.This provides a theoretical basis for the design of airborne equipment.
引文
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[7]NIU fei,XU Shengli,CHENG Gengdong.A general formulation of structural topology optimization for maximizing structural stiffness[J].Structural and Multidisciplinary optimization,2011,43(4):561.
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[9]巫发茂.某机载控制台拓扑优化设计研究[D].成都:西华大学,2016.
[10]林家浩,张亚辉.随机振动的虚拟激励法[M].北京:科学出版社,2004:121.
[11]李颖.空间相机动力学分析[D].西安:西北工业大学,2003.
[2]HIENONEN R,KARJALAINEN M,LANKINEN R.Verification of the thermal design of electronic equipment[M].Espoo:Technical Research Centre of Finland,1997:13-86.
[3]Kirseh U.Optimal topologies of structures[J].Appl Mech.Rev,1989,42(8):223.
[4]陈明辉.CAD技术的发展现状与进展[J].广东科技,2004(5):22.
[5]KROG Lars,TUCKE Alastair,ROLLEMA Gerrit,et al.Application of topology,sizing and shape optimization methods to optimal design of aircraft components[R].[S.l.]:Alair Engineering Ltd,2012.
[6]朱维兵,蒋龙,王健,等.某机载功放电子设备安装架结构优化设计[J].机械设计与制造,2016(5):200.
[7]NIU fei,XU Shengli,CHENG Gengdong.A general formulation of structural topology optimization for maximizing structural stiffness[J].Structural and Multidisciplinary optimization,2011,43(4):561.
[8]巫发茂,蒋龙,王健,等.基于ANSYS Workbench某机载电子设备随机振动响应分析[J].现代电子技术,2016,39(10):96.
[9]巫发茂.某机载控制台拓扑优化设计研究[D].成都:西华大学,2016.
[10]林家浩,张亚辉.随机振动的虚拟激励法[M].北京:科学出版社,2004:121.
[11]李颖.空间相机动力学分析[D].西安:西北工业大学,2003.