繊維強化プラスチック箱形ばねの曲げ特性

概要

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Composite spring with box cores are proposed by using fiber reinforced plastics. The materials are glass-cloth laminated plastics and carbon-cloth laminated plastics. The structure of the springs consists of core boxes and surface plates which adhere to the upper and lower sides of the core boxes. The dimensions of core boxes are changed in equal ratio according to the distribution of bamboo joints. The stress and strain distributions of the spring under a three-point bending condition are analyzed by using the finite-element method. The analyzed strain distributions are compared with the experimental results. The spring constant is defined by dividing the value of the applied load by spring deflection. The initial failure load of the spring is estimated by applying the strength law of the fiber-reinforced plastics to the stress distribution in the spring. The spring constant per unit mass of composite spring is smaller than that of metal springs with the same configuration. The initial failure load of composite springs increases in comparison with that of the metal springs.
一般社団法人日本機械学会の論文
1990-03-25