波形座金の疲れ特性 : 疲労強度に及ぼす形状及び取付け高さの影響(機械要素,潤滑,工作,生産管理など)

抄録

Low-cycle compressive fatigue tests on wave springs were carried out. In the experiment, two types of wave springs named L spring (large wave-radius of 10.5 mm) and S spring (small wave-radius of 1.5 mm) were tested. The influence of wave-radius and deflection applied during the tests on fatigue life was investigated. In order to clarify deformation characteristics, numerical simulations were carried out by a general 3D FEM. It became apparent throught the fatigue tests and the numerical analysis that the fatigue life depends on the wave-radius and deflection amplitude. The number of cycles to failure increased with decreasing the deflection amplitude. A force required to compress L spring becomes larger than S spring with increasing the defection. However S spring fails earlier than L spring. The reason for such phenomena was well explained due to the difference in the deformation behavior of the two springs from the FEM analysis considering the geometrical nonlinearity as well as the material nonlinearity.