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飞艇囊体受充气荷载及吊挂荷载作用产生的变形将影响飞艇的初始设计气动参数及飞行控制参数.通过对充气荷载及吊挂荷载下充气囊体变形的研究,建立有效的囊体数值模拟分析方法.囊体计算模型为通过Michel转棙准则优化的流线型飞艇外形,并以商业有限元软件ABAQUS为基本计算工具.计算了充气压差荷载及吊挂荷载下囊体的变形规律,分析了囊体结构数值模拟过程中出现的问题:囊体褶皱以及计算模型出现侧移,并提出了解决这些问题的方案.通过对囊体结构变形的计算结果分析,对比和分析了数值模拟计算结果与试验结果,总结了囊体结构变形的规律.
The deformation of the airship capsule caused by the inflating and suspending loads will affect the initial design aerodynamic parameters and the flight control parameters of the airship.Analyzing the deformation of the inflated bladders under the loading and hanging loads, The capsule calculation model is the shape of the streamlined airship optimized by the Michel transfer criterion and the commercial finite element software ABAQUS is taken as the basic calculation tool.The deformation law of the capsule under the pneumatic pressure difference load and the suspension load is calculated and analyzed The problems in the process of numerical simulation of the capsule structure: the capsule folds and the lateral displacement of the calculation model are presented, and some solutions to these problems are proposed.According to the calculation results of the capsule structure deformation, the numerical simulation results are compared with those of the numerical simulation The test results summarize the law of deformation of capsule structure.