| The in-depth contents |
| Publication year |
1998 |
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| Title |
BI-AXIAL STRESS-STRAIN CURVES FOR NONLINEAR ANALYSIS OF MEMBRANE WITH THE EFFECT OF STRESS RELAXATION OR CREEP |
| Author |
Hi.rokazu Minami,ChiakiY amamoto,Sinya Segawa,Yoshihiro Kono
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| Summary |
Membrane materials (e.g. PTFE coated glass fiber fabrics) generally show clear stress relaxation or creep. The analysis which estimates the effects of these requires bi-axial stress-strain curves of the material w here stress-relaxation or creep effects should be included. The curves are estimated by stepwise stress relaxation and creep testings which have been carried out under various values of stress ratio constraints. Using the estimated curves，a multi-step linear approximation method of analysis computes the deflection of a square membrane continually subjected to constant internal pressure during a week. The computed deflection was very close to measured， experimental one.
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