Structural Application of Sealant to Make Flexible Joint System and Behavior of Joint

密封剂在柔性连接系统中的结构应用及连接性能

• 批准号: 62550414
• 负责人: TANAKA Kyoji
• 金额: $ 0.26万
• 依托单位: Tokyo Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1987
• 资助国家: 日本
• 起止时间: 1987 至 1989
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-62550414/
• 关键词: Sealant; Structural sealant; Joint; Connection; Deformation; Load; Shape of bead; Dimension of joint; シーリング材; シリコーン; 構造用シーリング材; 矩形断面; 目地幅; 目地深さ

Flexible joints made of sealants with various rectangular cross sections were investigated, and the results obtained are as follows.(1) Mechanical behavior of a joint with various cross sections Mechanical behavior of a joint was mainly affected by modulus of a joint material and the shape of a bead. As for the latter, stress induced in a bead is depend on the ratio such as depth(D)/width(W) in tensile and compressive deformation, D^2/W in bending deformation. But, no dependence to the shape was observed in shearing deformation.(2) Stress distribution in a bead deformed Stress in cross sectional area of a bead is gradually increasing from the center to the corner.(3) Fatigue resistance of joint materials Cracks appeared at the both ends, near substrate, on the surfaces of a bead during fatigue operation, and the number of cycles till cracking (N) can be expressed the next equation , log N = -A log ( D^n/W ) + B :where A and B are constants.(4) Load-deformation relation of a two dimensional structure with flexible joints Rigidity of a structure is much affected by the shape of a bead in addition to the modulus of a joint material. The structure becomes more rigid according to an increase of D or a decrease of W.(5) Development of a new flexible joint system Based on the knowledge studied above, a new flexible joint system with higher degree of freedom was developed, and the behavior of the system was investigated.

对不同矩形截面密封胶制成的柔性接头进行了研究，得到的结果如下：(1)不同截面接头的力学行为接头的力学行为主要受接头材料模量和接头接头形状的影响。对于后者，在拉伸和压缩变形中，头内产生的应力取决于深度(D)/宽度(W)，弯曲变形中取决于D^2/W。但剪切变形与形状无关。(2)钢珠变形后的应力分布，钢珠横截面积上的应力从中心到角落逐渐增大。(3)接头材料的抗疲劳性能疲劳工作时，接头两端靠近基材的表面出现裂纹，直至裂纹的循环次数(N)可表示为log N = -A log (D^ N /W) + B，其中a和B为常数。(4)具有柔性接头的二维结构的荷载-变形关系除接头材料的模量外，接头的形状对结构的刚度也有很大的影响。(5)新型柔性关节系统的开发基于上述知识，开发了一种具有更高自由度的新型柔性关节系统，并对该系统的行为进行了研究。

项目成果

田中享二: 日本建築学会構造系論文報告集. 390号. 10-17 (1988)

田中恭二：日本建筑学会结构系统论文报告，第 390 期。10-17 (1988)。

田中享二、小池迪夫、橋田浩、岡本肇、林文秀: "矩形断面をもつシ-リングジョイントの耐疲労性に及ぼす形状・寸法の影響" 日本建築学会構造系論文報告集. 390. 10-16 (1988)

Kyoji Tanaka、Michio Koike、Hiroshi Hashida、Hajime Okamoto、Fumihide Hayashi：“形状和尺寸对矩形截面密封接缝抗疲劳性的影响”日本建筑学会结构工程学报 390. 10-16（1988 年）。 ）

田中亨二: "シ-リング材を用いた自由度の高い軟らかな接合部の力学挙動" 日本建築学会学術講演梗概集. A. (1990)

田中浩二：“使用密封材料的高自由度软接头的机械行为”日本建筑学会学术讲座摘要A.（1990）。