織物強化ゴム製ベローズ型空気ばねの力学的特性評価手法

概要

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The stress state on the membrane of bellows type air springs made of woven fabric reinforced rubber is bi-axial when they are pressurized. The material properties for a numerical calculation are needed to use the value examined by bi-axial tensile test. It is very difficult to carry out the bi-axial tensile test because of the problem of making specimens or the way of restraining specimens. Therefore, we have proposed a simplified bi-axial testing method in order to obtain the mechanical properties under bi-axial stress state and presented a database of the material properties by this testing method. Moreover we have calculated the transverse spring constants of the bellows type air springs by nonlinear finite element analysis using this database. These results showed good agreements with the experimental results.
2002-09-25