Mechanism of Stiffness Loss in Synchronous Belts for Automobile

汽车同步带刚度损失机理

• 批准号: 10650135
• 负责人: IIZUKA Hiroshi
• 金额: $ 1.47万
• 依托单位: YAMAGATA UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10650135/
• 关键词: Synchronous belts; Helical cords; de-bonding; Bending stiffness; Extensional stiffness; Bending fatigue; FEM analysis; Fracture mechanics; 力学モデル

This project can be divided into three steps. The first step is a study on bending stiffness loss in helical cords during bending fatigue. The second step is associated with an estimation of extensional stiffness of helical cords. And in the last step, the authors study the mechanism of the extensional stiffness loss of helical cords.(1) De-bonding of stranded glass filaments in helical cords is initiated during bending fatigue. The authors proposed a simplified mechanical model to explain the bending stiffness loss by the initiation of the de-bonding. The model reasonably explained the loss of the bending stiffness in helical cords.(2) The present authors proposed a mechanical model to estimate the extensional stiffness of the helical cords. The model reasonably estimates the extensional stiffness of the helical cords.(3) A mechanical model to explain the extensional stiffness loss of the helical cords is proposed considering the initiation of the de-bonding. The model reasonably explained the experimental and FEM results. The extensional stiffness loss is explained by the release of the bending deformation of the fibers, which deformation in inhibited by the center-core rubber.

这个项目可以分为三个步骤。第一步是研究弯曲疲劳期间螺旋帘线的弯曲刚度损失。第二步与螺旋线的拉伸刚度的估计相关。最后，作者研究了螺旋帘线拉伸刚度损失的机制。(1)螺旋帘线中玻璃丝的脱粘是在弯曲疲劳过程中引发的。作者提出了一个简化的力学模型来解释脱粘开始时的弯曲刚度损失。该模型合理地解释了螺旋帘线弯曲刚度的损失。(2)作者提出了一种力学模型来估计螺旋帘线的拉伸刚度。该模型合理地估计了螺旋帘线的拉伸刚度。(3)考虑了脱粘的开始，提出了解释螺旋帘线拉伸刚度损失的力学模型。该模型合理地解释了实验和有限元结果。拉伸刚度损失是通过纤维弯曲变形的释放来解释的，该变形受到中心芯橡胶的抑制。

项目成果

H. Iizuka, H. Takahashi and T. Tetsuka: "Reduction of Bending Stiffness during Bending Fatigue"Journal of JSME (in Japanese). 65-636. 3368 (1999)

H. Iizuka、H. Takahashi 和 T. Tetsuka：“弯曲疲劳期间弯曲刚度的降低”JSME 期刊（日文）。

飯塚博,高橋秀雄,丸山貴生: "歯付ベルト用コード屈曲時の力学特性"日本機械学会,1999年度年次大会. 5. (1999)

Hiroshi Iizuka、Hideo Takahashi、Takao Maruyama：“弯曲时齿形带帘线的机械性能”日本机械工程师学会，1999 年年会 5。（1999 年）。

H.Iikzuka and H.Takahashi: "Decrease of Stiffness in Synchronous Belts During Fatigue"4th World Congress on GPT,(Paris). 2. 1319-1325 (1999)

H.Iikzuka 和 H.Takahashi：“疲劳期间同步带刚度的降低”第四届 GPT 世界大会，（巴黎）。

H.Iizuka and H.Takahashi: "Decrease of Stiffness in Synchronous Belts During Fatigue"4th World Congress on GPT,(Paris). 2. 1319-1325 (1999)

H.Iizuka 和 H.Takahashi：“疲劳期间同步带刚度的降低”第四届 GPT 世界大会，（巴黎）。

高橋秀雄,飯塚博,高橋美喜男: "歯付ベルト用コードの引張り剛性"日本機械学会,1999年度年次大会. 5. (1999)

Hideo Takahashi、Hiroshi Iizuka、Mikio Takahashi：“齿形带帘线的拉伸刚度”日本机械工程师学会，1999 年年会 5。（1999 年）。