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Systematically Creased Thin-Film Membrane Structures

机译:系统地起皱的薄膜膜结构

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This paper presents a study of a square membrane, creased according to the Miura-ori folding pattern. When the membrane is allowed to expand from its packaged configuration, it initially expands elastic-ally under zero corner forces. Starting from this naturally expanded configuration, the paper investigates the stress distribution and the load-displacement relationship when in-plane, diagonal loads are applied at the corners. It is found that out-of-plane bending is the main load-carrying mode and, for stress magnitudes typical of current solar-sail designs, the behavior of the membrane remains linear elastic. A simple analytical model, originally proposed for randomly creased membranes, is shown to predict with good accuracy the load-displacement relationship of the corners. It uses physically based and hence directly measurable membrane parameters.
机译:本文介绍了根据Miura-ori折叠样式起皱的方形膜的研究。当膜被允许从其包装构造膨胀时,其最初在零拐角力下弹性地膨胀。从这种自然扩展的构型开始,本文研究了在拐角处施加平面,对角线载荷时的应力分布和载荷-位移关系。发现面外弯曲是主要的​​承载方式,并且对于当前的太阳能帆设计典型的应力大小,膜的行为保持线性弹性。最初为随机起皱的膜所建议的简单分析模型可以很好地预测转角的载荷-位移关系。它使用基于物理的膜参数,因此可以直接测量。

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