Dynamic Characteristics of Laminated Structural Members

层合结构构件的动态特性

• 批准号: 02650318
• 负责人: MIKAMI Takashi
• 金额: $ 1.15万
• 依托单位: Hokkaido University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1990
• 资助国家: 日本
• 起止时间: 1990 至 1991
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-02650318/
• 关键词: Laminated plate; Free vibration; Collocation method; Initial stress; Shear deformation; Antisymmetric angle-ply; Antisymmetric cross-ply; 積層板; 逆対称アングル・プライ積層板; 逆対称クロス・プライ積層板; 多層構造; 積層殻; 振動; 衝撃

Laminated structural members, such as plates and shells, are being increasingly used in structural applications. especially when light weight is essential. For the design of such structures subject to dynamic forces, it is of fundamental importance to clarify the vibration characteristics of the structures. In this study, the free vibrations of antisymmetric angle-ply and cross-ply laminated plates, having one pair of opposite edges simply supported, are investigated on the basis of the Yang, Norris, and Stavsky(YNS) theory. The principal conclusions of this study are summarized as follows :(1) An efficient computational procedure, based on the collocation method, has been proposed for the analysis of free vibration of laminated plates. The comparisons with other numerical solutions show that the method yields very good results. In addition, an analysis of the strain energy distributions can be used as an aid for the better understanding of the Vibration characteristics of the plates.(2) The effect of transverse shear deformation on the fundamental frequency is more pronounced for the plates with the remaining edges clamped.(3) The effect of coupling between bending and extension on the fundamental frequency is quite substantial.(4) The effect of initial stress on the fundamental frequency is greater for laminated plates than for homogeneous, isotropic plates of the same dimensions.

层压结构构件，例如板和壳，越来越多地用于结构应用中。特别是当重量轻是必要的时候。对于此类受动力作用的结构的设计，弄清结构的振动特性是至关重要的。在这项研究中，反对称角铺设和正交铺设层合板的自由振动，有一对相对的边缘简支，杨，诺里斯和Stavsky（YNS）理论的基础上进行了研究。本文的主要结论如下：（1）提出了一种基于配点法的层合板自由振动分析的有效计算方法。与其它数值解的比较表明，该方法得到了很好的结果。此外，应变能分布的分析可以用作更好地理解板的振动特性的辅助。(2)横向剪切变形对基频的影响对于其余边固支的板更为明显。(3)弯曲和拉伸之间的耦合对基频的影响是相当大的。(4)初始应力对基频的影响对于层合板比对于相同尺寸的均匀各向同性板更大。

项目成果

朴 勝振・芳村 仁・三上 隆: "多層板の振動・座屈解析" 土木学会第45回年次学術講演概要集. I. 260-261 (1990)

Katsujin Park、Jin Yoshimura 和 Takashi Mikami：“多层板的振动和屈曲分析”日本土木工程师学会第 45 届年度学术讲座摘要 I. 260-261 (1990)。

三上 隆: "衝撃荷重を受ける二層円筒殻の解析" 落石等による衝撃問題に関するシンポジウム講演論文集. 101-104 (1991)

三上隆：《受到冲击载荷作用的两层圆柱壳的分析》落石等冲击问题研讨会论文集101-104（1991）

朴文浩・芳村仁・三上隆・朴勝振: "Free Vibrations and Strain Energy Analysis of Antisymmetric Cross-ply Laminted Plates" 大韓土木学会論文集. 11. 37-44 (1991)

Moon-ho Park、Hitoshi Yoshimura、Takashi Mikami 和 Sung-jin Park：“反对称交叉层合板的自由振动和应变能分析”韩国土木工程师学会会刊，11. 37-44 (1991)。

芳村 仁,三上 隆,朴勝振: "逆対称アングル・プライ積層板の自由振動" 構造工学論文集. 37A. 911-919 (1991)

Hitoshi Yoshimura、Takashi Mikami 和 Sung-jin Park：“反对称角层板的自由振动”《结构工程杂志》37A 911-919 (1991)。

三上 隆: "衝撃荷重を受ける二層円筒殻の解析" 土木学会北海道支部論文報告集. 47. 143-146 (1991)

Takashi Mikami：“承受冲击载荷的两层圆柱壳的分析”日本土木工程师学会北海道分会论文集 47. 143-146 (1991)。