|
|||||
|
|
| 碳纤维缠绕复合气瓶自紧力和疲劳的数值模拟 | |
| 引用本文： | 陈,亮.碳纤维缠绕复合气瓶自紧力和疲劳的数值模拟[J].宇航材料工艺,2012,42(4):16-20. |
| 作者姓名： | 陈 亮 |
| 作者单位： | 1. 大连理工大学,大连,116085 2. 航天材料及工艺研究所,北京,100076 |
| 基金项目： | 中央高校基本科研业务费专项资金，新世纪优秀人才支持计划 |
| 摘 要： | 采用数值模拟方法研究了自紧工艺对碳纤维缠绕复合气瓶的应力分布和疲劳性能的影响。基于ANSYS商用有限元分析软件,考虑气瓶封头部分碳纤维缠绕层的角度和厚度沿封头子午线的连续变化,建立了有限元模型。分析验证了54 MPa自紧压力对复合气瓶零压和35 MPa工作压力下内衬和复合材料缠绕层应力的影响,并利用Coffin-Manson公式预测了复合气瓶的疲劳寿命。结果表明,自紧后复合气瓶内衬在工作压力下的最大应力减小了29.1%。有限元计算的疲劳寿命结果与实验测定结果之间的误差<8%,验证了有限元模型和计算方法的正确性。 |
| 关 键 词： | 纤维缠绕气瓶 有限元 自紧力 疲劳寿命 |
Numerical Simulation of Autofrettage and Fatigue of FilamentWound Pressure Vessel |
|
| Chen Liang , Sun Hongwei , Chen Guoqing , Ren Mingfa , Zhou Wenlong.Numerical Simulation of Autofrettage and Fatigue of FilamentWound Pressure Vessel[J].Aerospace Materials & Technology,2012,42(4):16-20. | |
| Authors: | Chen Liang Sun Hongwei Chen Guoqing Ren Mingfa Zhou Wenlong |
| Institution: | 1(1 Dalian University of Technology,Dalian 116085)(2 Aerospace Research Institute of Materials & Processing Technology,Beijing 100076) |
| Abstract: | The effect of autofrattage on stress distribution and fatigue life of composite overwrapped pressure vessels(COPV) was studied by using the numerical simulation. The finite element model of COPV was established based on the commercial software ANSYS. The variations of the thickness and winding angles of the composites along the meridian in the domes section are considered during the modeling. The influence of autofrettage pressure of 54 MPa on the stress of metallic liner and composite layers is analyzed. The fatigue life of the COPV is predicated by using Coffin-Manson formula. The results demonstrated that the diversity between the result of finite element analysis and the experiments is within 8%,which indicated the finite element model and the analysis is reasonable |
| Keywords: | Overwrapped pressure vessels Finite element Autofrettage pressure Fatigue life |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |
| 点击此处可从《宇航材料工艺》浏览原始摘要信息 | |
| 点击此处可从《宇航材料工艺》下载免费的PDF全文 | |