The contact pressure distribution and detaching phenomenon of tire tread rubber under compressive and shearing forces.

AKASAKA Takashi, KAGAMI Shigeru, HASEGAWA Atsushi, SHIOBARA Hitoshi

doi:10.2324/gomu.66.259

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Other Title

圧縮・せん断力によるタイヤトレッドゴムの圧力分布と浮き上がり現象
アッシュクセンダンリョクニヨルタイヤトレッドゴムノアツリョク

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Description

The tire structure is forced usually to deform complexly and seriously on the roadway, to realize the fundamental performances of automobiles of running, turning and braking. The tread rubber block, as a constituent element of tire, plays an important role of holding the frictional forces between the tire and the road, for enabling car steering and breaking.<br>While the tread rubber block is subjected to compressive and shearing forces in contacting with the roadway, a phenomenon of the block edge detaching takes place, which leads to the contact area reduction and further the tread rubber wear.<br>An experimental study and a numerical analysis by using the finite element method based on a nonlinear elasticity law given by Mooney-Rivlin, have been conducted previously on this phenomenon, with predicting good agreement between them on the contact pressure distribution.<br>In this paper, an approximate analysis is presented on the contact deformation of a rubber block under compressive and shearing forces, by using the energy method based on the linear Hooke′s law with considering the incompressibility of rubber, to reveal the critical condition of the detaching phenomenon. Good agreement is obtained among these analytical, numerical and experimental results for contact pressure distribution and detaching condition.

Journal

NIPPON GOMU KYOKAISHI

NIPPON GOMU KYOKAISHI 66 (4), 259-265, 1993

THE SOCIRETY OF RUBBER SCIENCE AND TECHNOLOGYY, JAPAN