MEASUREMENT OF STRESSES IN WRINKLED STRETCHED CIRCULAR MEMBRANES UNDER INPLANE TORSION

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Publication year 1995
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Title MEASUREMENT OF STRESSES IN WRINKLED STRETCHED CIRCULAR MEMBRANES UNDER INPLANE TORSION
Author Tomoshi Miyamura,Yasuhiko Hangai
Summary A purpose of this paper is to measure stresses in wrinkled orthotropic membrane structures. Illustrative examples are wrinkled circular stretched membranes under inplane torsion. First,a method of measuring stresses in thin membrane structures is presented. The method employs a fact that a part of membrane with strain gages is almost elastic. Second,stresses in the wrinkled circular membranes are measured and principal stresses are obtained. Isotropic elastic film and orthotropic fabric membrane are used. In the wrinkled region of both membranes,there exist almost no compressive stresses. Directions of principal stresses in wrinkled fabric membrane almost coincide with directions of fibers of the membrane.