摘要
为获取高精度的网格加筋壳的有限元计算模型,首先梳理了这种网格现有有限元建模方面的研究,然后提出了基于Abaqus壳模型高精度建模方法。最后以新型中型运载火箭某贮箱为例,建立了等边三角形网格加筋壳为箱体的全模型,并进行试验预示。通过对比试验和预示结果,计算的破坏形式破坏位置与试验相符,破坏载荷相差仅1.8%,充分验证了这种建模方法的正确性。
The isogrid stiffened shell has the characteristics of isotropic and high specific stiffness,and has been widely used in shell design of launch vehicle.The existing finite element modeling of isogrid is studied at first.Then a high-precision modeling method based on Abaqus is proposed.Finally,taking a certain tank of new generation medium-sized launch vehicle as an example,the full model of with isogrid stiffened shell is established,and the test is predicted.Moreover,the calculated failure mode and location are consistent with the test,and the difference of failure load between them is only 1.8%.The method of modeling is fully verified by the test.
作者
乐晨
曹昱
杨帆
董曼红
郭雷
Yue Chen;Cao Yu;Yang Fan;Dong Man-hong;Guo Lei(Beijing Insitude of Aerospace System,Beijing,100076)
出处
《导弹与航天运载技术》
CSCD
北大核心
2019年第2期12-16,共5页
Missiles and Space Vehicles
