摘要
为研究高空环境工作条件下充气式减速器的折叠充气展开过程,以美国IRVE-3飞行器为例,建立充气式减速器折叠数值模型,对绑带结构采用膜单元建模,基于控制体积法和LS-DYNA软件进行流-固耦合动力学计算。在动力学分析中分析地面与高空对于展开过程的影响,并进行机理分析。结果表明:所建模型能较好地模拟折叠充气展开过程,并且高空环境对充气式减速器的展开时间、气囊体积与内压变化等关键指标有显著影响。
To study the folding and deployment process of the inflatable aerodynamic decelerator in the working conditions of high altitude environment,taking the US IRVE-3 aircraft as a typical example,the folding model for simulating deployment process is established,the strap structure is modeled by membrane element,and the control volume and the LS-DYNA software are employed for fluid-solid coupling dynamics computation.In the dynamic analysis,the influence of the ground and high altitude environment on the deployment process is investigated,and the mechanism analysis is made.The computational results show that the proposed model can effectively simulate the folding and deployment process,and the deployment time,airbag volume and internal pressure change of the inflatable aerodynamic decelerator will be significantly influenced by high altitude environment.
作者
何宜谦
雷庆
薛齐文
郭敏
刘飞
张贺
刘旭东
HE Yiqian;LEI Qing;XUE Qiwen;GUO Min;LIU Fei;ZHANG He;LIU Xudong(Department of Engineering Mechanics,Dalian University of Technology,Dalian 116024,Liaoning,China;School of Civil Engineering,Dalian Jiaotong University,Dalian 116028,Liaoning,China;Defense Research Institute,AVIC Optoelectronics Technology Co.,Ltd.,Luoyang 471003,Henan,China;Aerospace Science and Industry Space Engineering Development Co.,Ltd.,Beijing 100854,China)
出处
《计算机辅助工程》
2023年第3期1-8,14,共9页
Computer Aided Engineering
基金
国家自然科学基金(12072063)
工业装备结构分析国家重点实验室自主课题(S22403)。
关键词
充气式减速器
控制体积法
折叠建模
充气展开
数值仿真
高空环境
inflatable aerodynamic decelerator
control volume method
folding modeling
inflatable deployment
numerical simulation
high altitude environment
