| The in-depth contents |
| Publication year |
2000 |
| PDF |
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| Title |
VISCO-ELASTO-PLASTIC STRESS-DISPLACEMENT ANALYSIS OF MEMBRANE STRUCTURES FOR SIMULATING CONSTRUCTION PROCESS -Curved membrane structure- |
| Author |
Shiro Kato,Tatsuya Yoshino
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| Summary |
The present paper discusses a numerical analysis to be applied to simulation for introducing tensions on sites into curved membrane structures. The analysis considers，first，the process for cutting pattern depending geodesic lines，which is most important to cut the membrane fabrics at factory with a small reduction in length. This process includes two main problems; (1) developing a curved surface into many flat segments and (2) a careful consideration of a small reduction in length for the compensation of elongation by tensioning at sites. The present paper discusses this process by focusing FEM eight nodes isoparametric elements to be compatibly applied to such development and also the effects of creep and relaxation of the membranes at construction Second，the process for sewing many membrane segments into a whole structure is analyzed based on FEM，followed by a study of the process for tensioning the finished membranes into a curved surface for connecting to outer frames. For the third process， the authors propose a new analytical method that can evaluate the visco-elasto-plastic behavior of membrane fabrics，since the elongation of fabric membranes due to creep and stress relaxation play an important role for a precise reduction ratio for cutting.
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