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Mechanical properties of UN-5100 envelope material for stratospheric airship

机译：平流层飞艇的UN-5100包络材料机械性能

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摘要

Stratospheric airships are promising aircraft, usually designed as a non-rigid airship. As an essential part of the non-rigid airship, the envelope plays a significant role in maintaining its shape and bearing the external force load. Generally, the envelope material of a flexible airship consists of plain-weave fabric, composed of warp and weft fibre yarn. At present, biaxial tensile experiments are the primary method used to study the stress-strain characteristics of such flexible airship materials. In this work, biaxial tensile testing of UN-5100 material was carried out. The strain on the material under unusual stress and the stress ratio were obtained using Digital Image Correlation (DIC) technology. Also, the stress-strain curve was corrected by polynomial fitting. The slope of the stress-strain curve at different points, the Membrane Structures Association of Japan (MSAJ) standard and the Radial Basis Function (RBF) model were compared to identify the stress-strain characteristics of the materials. Some conclusions on the mechanical properties of the flexible airship material can be drawn and will play a significant role in the design of such envelopes.
机译：平流层飞艇是有前途的飞机，通常被设计为非刚性飞艇。作为非刚性飞艇的重要组成部分，信封在维持其形状并承载外力载荷方面发挥着重要作用。通常，柔性飞艇的包络材料由普通织物组成，由经纱和纬纱纱线组成。目前，双轴拉伸实验是用于研究这种柔性飞艇材料的应力 - 应变特性的主要方法。在这项工作中，进行了UN-5100材料的双轴拉伸测试。利用数字图像相关（DIC）技术获得了不寻常应力和应力比的材料上的应变。而且，通过多项式配件校正应力 - 应变曲线。比较了不同点的应力 - 应变曲线，日本膜结构与径向基函数（RBF）模型的膜结构曲线，以鉴定材料的应力 - 应变特征。可以绘制关于柔性飞艇材料的机械性能的一些结论，并将在这种信封的设计中发挥重要作用。

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  • 来源
    《The Aeronautical Journal》 |2021年第1285期|472-488|共17页
  • 作者

    Xie W-C; Wang X-L; Duan D-P; Tang J-W; Wei Y.;

  • 作者单位

    Shanghai Jiao Tong Univ Sch Aeronaut & Astronaut Shanghai 200240 Peoples R China;

    Shanghai Jiao Tong Univ Sch Aeronaut & Astronaut Shanghai 200240 Peoples R China;

    Shanghai Jiao Tong Univ Sch Aeronaut & Astronaut Shanghai 200240 Peoples R China;

    Shanghai Jiao Tong Univ Sch Aeronaut & Astronaut Shanghai 200240 Peoples R China;

    Shanghai Jiao Tong Univ Sch Aeronaut & Astronaut Shanghai 200240 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Stratospheric airship; envelope; biaxial tensile; approximate model;

    机译：平流层飞艇;信封;双轴拉伸;近似模型;

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