HORIZONTAL BIDIRECTIONAL CHARACTERISTICS OF ELASTIC SLIDING BEARINGS UNDER VARIOUS FLUCTUANT VERTICAL LOADING CONDITIONS

Abstract

A series of bidirectional loading tests were conducted on a high friction type sliding rubber bearing. Tests were conducted under horizontal bidirectional loading and constant or fluctuant vertical loading. Regardless of the vertical loading methods, the maximum shear strain under bidirectional loadings increased approximately 40% - 50% compared to nominal shear strain. Reflecting mechanical characteristics of the bearing, the analytical model of elastic sliding bearings was proposed. This model accurately represented force-displacement relationships under horizontal bidirectional loading and constant or fluctuant vertical loading.