• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>3rd AIAA spacecraft structures conference 2016 >Viscoelastic Effects in Metal-Polymer Laminate Inflatable Structures
【24h】

Viscoelastic Effects in Metal-Polymer Laminate Inflatable Structures

机译：金属聚合物层压板充气结构中的粘弹性效应

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A 1 m long inflatable-rigidizable mast was developed as a payload for InflateSail: a 3U CubeSat technology demonstration mission. The thin-walled cylindrical mast consists of an aluminum-polymer laminate, and long-term structural performance is ensured through strain-rigidization: the packaging creases are removed through plastic deformation of the aluminum plies. During ground tests it was observed that after rigidization the internal pressure dropped more rapidly than could be accounted for by leakage of inflation gas alone. It was hypothesized that viscoelastic behaviour of the laminate material causes a further, time-dependent (order of seconds), increase in cylinder diameter, with a corresponding drop in internal pressure. Additional experiments revealed an increase in diameter, including large visco-elastic shear in the adhesive of the lap joint. This was not found to be sufficient to fully account for the observed reduction in pressure. An increase in temperature of the gas during inflation, with subsequent cooling down to ambient is thought to cause the additional pressure drop.
机译：开发了一个1 m长的充气式可桅杆，作为InflateSail的有效载荷：3U CubeSat技术演示任务。薄壁圆柱桅杆由铝聚合物层压板组成，通过应变刚性确保了长期的结构性能：通过铝层的塑性变形消除了包装的折痕。在地面测试中，观察到刚度增加后，内部压力下降的速度比仅由充气气体泄漏引起的下降快。假设层压材料的粘弹性行为会导致圆柱直径的进一步时间依赖性（秒级）增加，并相应地降低内部压力。其他实验显示直径增加，包括搭接接头的粘合剂中大的粘弹性剪切力。发现这不足以完全解决观察到的压力降低。充气期间气体温度升高，随后冷却至环境温度被认为会引起额外的压力下降。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号