端部に高引裂材を用いた積層ゴム支承の圧縮下での静的および疲労せん断挙動 Static and Fatigue Shear Characteristics of Rubber-Metal Laminated Bearings Partially Using High Tearing Rubber at Their Edge under Compression
The effect of the partial use of high tearing strength rubber at the edge of rubber-metal laminated bearings was examined. The static or cyclic fatigue shear loads were applied to the circular rubber bearing subjected to compressive load at room temperature. The specimens having a chambered edge at the laminating steel plates were also used.<br>The crack initiation was significantly delayed due to the use of high tearing strength rubber under static load, regardless of the edge shape of the steel plates and compressive load. For conventional rubber-metal laminated bearings fabricated by one kind of rubber, the edge shape affected the nominal shear strain at crack initiation in case of static low compression.<br>The shear modulus of the specimens with high tearing strength rubber under cyclic loading was slightly lower than that of conventional one. The visco-elastic tangential loss at 5Hz vibration was slightly decreased with an increase of the number of cyclic loading. This change was not related with the material and the magnitude of compressive load. The tangential loss for the specimen with high tearing strength rubber was larger than that of conventional one, and was affected by the compressive load at high frequencies (10Hz and 20Hz).
日本ゴム協會誌 73(9), 511-517, 2000-09-15
THE SOCIRETY OF RUBBER SCIENCE AND TECHNOLOGYY, JAPAN