Kapton薄膜折叠力学行为分析与试验

上海交通大学学报（自然版） ›› 2014, Vol. 48 ›› Issue (08): 1109-1115.

Kapton薄膜折叠力学行为分析与试验

蔡祈耀1，陈务军1，张大旭1，彭福军2，房光强2

(1. 上海交通大学空间结构研究中心，上海 200030； 2. 上海宇航系统工程研究所，上海 201108)

收稿日期:2013-12-18 出版日期:2014-08-28 发布日期:2014-08-28
基金资助:
国家自然科学基金资助项目（51278299;11172180），上海市自然科学基金资助项目（12ER1414800），上海航天基金资助项目（HTJ1015）

Mechanical Behavior Analysis and Experiment of Kapton Film Folding

CAI Qiyao1,CHEN Wujun1,ZHANG Daxu1,PENG Fujun2,FANG Guangqiang2

(1. Space Structures Research Centre, Shanghai Jiaotong University, Shanghai 200030， China;2.Aerospace System Engineering of Shanghai, Shanghai 201108, China)

Received:2013-12-18 Online:2014-08-28 Published:2014-08-28

摘要/Abstract

摘要：

基于线弹性工程理论对S型折叠模型进行了研究，推导得到相邻接触薄膜反弹力与薄膜间距的关系式.利用ABAQUS，采用隐式静力法对薄膜折叠过程进行了数值模拟.采用连续加载和分级加载对50和125 μm薄膜进行弹性返复与弹塑性返复折叠试验，测得了薄膜反弹力与薄膜间距的关系曲线和薄膜折叠间距的蠕变量.通过单轴拉伸试验测得薄膜应力应变曲线及其力学参数，并应用于模型的理论分析和数值模拟分析.3种方法所得的薄膜反弹力与薄膜间距的关系曲线具有较好的一致性，表明了一维近似理论的合理性和数值模拟的有效性.

关键词: Kapton薄膜, 薄膜折叠, , S型折叠, 折痕, 弹塑性分析

Abstract:

The relationship between contact force of the adjacent film and layer pitch of the S-fold model was deduced based on linear-elastic engineering theory. The numerical simulation analysis of the folding process was conducted in implicit static method with ABAQUS. Considering continuous and grading loading conditions, repeated elastic and elastic-plastic folding experiments on 50 μm and 125 μm film specimens were conducted to acquire the P-h curve and the creep displacement (Δh). The stress-strain curve and mechanical parameters of the film were obtained from uniaxial tensile tests, which were then applied to theoretical analysis and numerical simulation. The consistency of P-h curve obtained from the three approaches shows that the one-dimensional approximate theory is reasonable and the numerical simulation is effective.

Key words: Kapton film, film folding, S-fold, crease, elastic-plastic analysis

中图分类号:

V 214

蔡祈耀1，陈务军1，张大旭1，彭福军2，房光强2. Kapton薄膜折叠力学行为分析与试验[J]. 上海交通大学学报（自然版）, 2014, 48(08): 1109-1115.

CAI Qiyao1,CHEN Wujun1,ZHANG Daxu1,PENG Fujun2,FANG Guangqiang2. Mechanical Behavior Analysis and Experiment of Kapton Film Folding[J]. Journal of Shanghai Jiaotong University, 2014, 48(08): 1109-1115.

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