| The in-depth contents |
| Publication year |
1998 |
| PDF |
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| Title |
VISCO-ELASTO-PLASTIC STRESS-DISPLAYCEMENT ANALYSIS OF MEMBRNE STRACTURES FOR SIMULATING CONSTRUCTION PROCESS -FORMULATION AND ANALYSIS BASED ON FABRIC LATTICE MODEL- |
| Author |
Shiro Kato,Tatsuya Yoshino,Hirokazu Minami,Shinya Segawa
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| Summary |
The present study aims to make clear the influences of several initial loading processes under construction on the distributions of stresses and on the configurations from a view point that there will arise some important irregularities in stresses and geometries if proper understanding of viscous characteristics and stress-strain relationships of fabric materials is not taken during construction.
FirstEthe formulation of Fabric Lattice Model with 6-parameter Voigt model is described considering the components in the Fabric lattice model.
SecondEre laxation tests performed to obtain fundamental data of small square pieces under cyclic loading are briefly explained. These experimental results have revealed that the initially introduced stresses are much decreased in all test cases due to relaxation but that repeated retensioning after stress relaxation has much improved the stress reduction. The data are also utilized to identify
the elasto-plastic constants and viscous parameters of the components in the Fabric Lattice Model.
ThirdEthe constitutive equations for both elasto-plastic and viscous behaviors are simulated based on the identified parameters. And the simulated ones are compared with the experiments. A very fine agreement is reported between the simulation and exponent.
FinallyEthe construction processes introducing initial tension into a 10m by 10m flat fabric membrane is studied on how the process influences the stress distributions and the strained fabric during several kinds of introducing processes.
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