摘要
采用基于能量函数的弹簧-质点模型,对卷曲折叠充气管的充气展开弯矩进行推导,考虑在充气管展开过程中薄膜自接触以及充气管中加劲钢卷尺产生的弯矩.通过Fortran语言编程对卷曲折叠充气管的充气展开过程进行数值模拟,并与利用气浮导轨消除重力,对同样条件的卷曲折叠充气管在不同时刻的展开速率的测试结果进行对比.数值分析与实验结果吻合良好,说明弹簧-质点模型方法能够很好地模拟卷曲折叠充气管的展开过程和动力性能.与传统的有限元方法相比,弹簧-质点模型方法的优点是建模简单,能够有效分析复杂充气结构的展开.研究不同充气速率对充气管的展开动力性能的影响,分析表明,充气速率增大,同一时刻的展开速率明显增大.
The inflatable deployment of coil-folded tube was simulated by spring-mass model based on energy function.Firstly,the inflation deployment moment of the coil-folded tube was derived,considering the self-contact of membrane in the deployment process and the moment induced by the steel tape in the inflatable tube wall.Secondly,a simulation program in Fortran code for the deployment process of inflatable tubes was developed.Thirdly,the inflatable deployment experiment of the coil-folded tube in the same conditions on an air track which eliminated the gravity effect was conducted.The numerical solutions of the deployment velocity were compared with the experimental results,and the good agreement verified the spring-mass model method could simulate the deployment process and dynamic characteristics of the coil-folded inflatable tube very well.Compared with the conventional finite element method,the advantage of this new method lies in its ability to analyze the deployment of complex deployable structures effectively with a comparatively simple modeling process.Analysis of the influence of inflation rate on deployment dynamic characteristics shows that large inflation rate leads to large deployment velocity.
出处
《浙江大学学报（工学版）》
EI
CAS
CSCD
北大核心
2010年第1期184-189,共6页
Journal of Zhejiang University：Engineering Science
基金
民用航天科研预先研究项目(C1320060312)
关键词
卷曲折叠充气管
展开动力学
充气硬化
展开模拟
弹簧-质点模型
coil-folded inflatable tube
deployment dynamics
inflatable self-rigidization
deployment simulation
spring-mass model
