免震・制振装置用積層ゴムの復元力特性に関する研究 : 積層ゴムの復元力特性への回転拘束度の影響

概要

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The vertical load dependency and the influence of rotation angle on the horizontal stiffness of element rubber bearings has been measured by using biaxial loading test equipment and a combined loading test machine. The results of the experiment show that the horizontal stiffness of the element laminated rubber depends on the shape of liminating rubber bearing, that is, shape factor (s_1) and second shape factor (s_2) have great influence on the horizontal stiffness. The horizontal stiffness of rubber bearings which have large values of shape factor and second shape factor could be changed by increasing vertical load. From the combined loading test, it was found that the horizontal stiffness of the rubber bearings which have no vertical load dependency could be changed by increasing the degree of freedom of the tilting angle of the upper and lower flange of the rubber bearings. Therefore, by increasing the degree of freedom of the tilting angle, the horizontal stiffness of the rubber bearings could be decreased and buckled with a small horizontal displacement. These phenomena could be predicted by the theory of the shear bending beam.
一般社団法人日本機械学会の論文
1998-08-25