| 摘要: |
| 复合材料网格筒结构由于极优的高比强度及比刚度特性，在运载火箭、飞机、卫星等航空航天结构中得到广泛应用。采用ABAQUS对复合材料网格筒结构进行精细化建模，详细分析了复合材料网格筒中的应力分布、分层破坏形式，研究了网格分层破坏出现的位置及对其整体刚度的影响。对网格筒桁条交界处的应力进行详细分析，研究了工艺缺陷对其破坏模式的影响。根据整体分析结果及局部分析结果，设计了承载能力为3500kN，质量为30kg的复合材料网格筒结构。研究成果将为复合材料结构网格筒的分析及设计提供参考。 |
| 关键词: 复合材料 网格筒 分层破坏 |
| DOI： |
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| 基金项目: |
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| Delamination Damage Analysis of Composite Grid Cylinder Based on ABAQUS |
| LI Hao,ZHAO Chuan,ZHANG Jiao,ZHOU Jing,DU Dong |
| (Shanghai Institute of Satellite Engineering) |
| Abstract: |
| Composite grid cylinders are widely applied in launchers, aircrafts and satellites, due to their high specific strength and specific stiffness. In this study, the commercial finite element code ABAQUS is employed to investigate the stress distribution and the delamination damage of composite grid cylinder. The position where the delamination starts and the influence of delamination damage on the stiffness of the grid cylinder are predicted and discussed. Meanwhile, the stress near the intersection of the stringers is investigated in detail and the influence of the manufacturing technology is studied. Based on the prediction and investigation, in this study we designed a composite grid cylinder, the load bearing capacity of which is 1335 kN, and the mass is 30kg. The prediction and discussion in this study are of value for the designing of composite grid cylinders. |
| Key words: Composite Grid cylinder Delamination |