主催: 日本学術会議 メカニクス・構造研究連絡委員会
共催: 応用物理学会, 化学工学会, 土木学会, 日本風工学会, 日本機械学会, 日本気象学会, 日本計算工学会, 日本建築学会, 日本原子力学会, 日本航空宇宙学会, 日本地震工学会, 日本数学会, 日本数値流体力学会, 日本造船学会, 日本物理学会, 日本流体力学会, 日本レオロジー学会, 農業土木学会, 無機マテリアル学会
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The effects of friction on the bearing mode failure of a pinned-joint are investigated experimentally. The effects of frictions are discussed by the stress distribution around a pinned-joint hole obtained through a computational simulation.The pinned joint strength tests are conducted to show the effect of friction using PTFE sheets for 5 to 6 mm pin-diameters. Under the condition with PTFE inserted between the pin and hole, pinned-joint strength is decrease by 30-40% compared to the case without PTFE. The dominant failure mode of the specimens with PTFE is interlaminar delamination.Three-dimensional FEM analysis is conducted to investigate the effects of friction on the pinned-joint. As the result, it is found that for both pin-diameters friction reduces the stress around the pinned-joint hole and that the prediction of the stress distribution of pined-joint hole does not need the coefficient of friction as a function of the fiber orientation and a contact pressure.
