| The in-depth contents |
| Publication year |
1990 |
| PDF |
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| Title |
DETERMINING MECHANICAL PROPERTIES OF MEMBRANE MATERIALS BY UNIAXIAL TESTING METHOD |
| Author |
Syuuichi lshitoku,Kohtaro Tanaka,Kiyoshi Takahashi,Nobuyuki Ataka
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| Summary |
Currently. it is considered preferable that mechanical property values such as elastic moduli in the warp and filling directions and the Poisson's ratio of materials used for structure analysis of membrane structures are determined on the basis of biaxial tests since actual membrane materials are used in a biaxial stress state. However. there are several problem. in these methods.
The object of this study is to establish simple and rational methods for determining property values of membrane materials. Elastic moduli in the filling and warp directions and the Poisson's ratio determined from the conventional biaxial methods and the shear with those determined from a cylinder test are compared and reviewed with those determined from the results of filling, warp, and 45 direction tension tests. By clarifying the loss and/or gain. the paper attempts to establish methods for determining properties values with simpler uniaxial tests using small test pieces.
The widely held belief that material properties should preferably are determined with biaxial tests is not necessarily true. Evaluation with uniaxial tests conducted for other orthotropic materials indicated herein can sufficiently express the membrane behavior in a biaxial stress slate.
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