基于EFG法的可伸缩柔性梁动力学分析
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- 英文论文题名：Dynamic Analysis of an axially deploying and retracting flexible beam based on the EFG method
- 论文作者：谢丹 ; 蹇开林
- 英文论文作者：Xie Dan ; Jian Kailin ; College of Aerospace Engineering ; Chongqing University
- 年：2016
- 作者机构：重庆大学航空航天学院;
- 论文关键词：时变系统 ; 伸缩梁 ; EFG法 ; 结构动力学
- 英文论文关键词：the time-varying parameter system ; the deploying and retracting beam ; element-free Galerkin(EFG) method ; structure dynamics
- 会议召开时间：2016-11-25
- 会议录名称：2016年航空科学与技术全国博士生学术论坛摘要集
- 语种：中文
- 分类号：O342
- 学会代码：XBHH
- 会议名称：2016年航空科学与技术全国博士生学术论坛
- 会议地点：中国陕西西安
- 主办单位：西北工业大学研究生院、中国高校航空学院院长联席会
- 学会名称：西北工业大学航空学院
- 页数：1
- 文件大小：472k
- 原文格式：D
- 会议级别：全国
摘要
采用基于广义移动最小二乘的全域插值EFG法对柔性梁的变形场进行空间离散,根据Hamilton变分原理得到轴向伸缩梁横向振动的无网格离散方程。对可伸缩梁的横向振动频率以及不同轴向运动规律下梁末端的自由振动响应进行了数值分析,通过与前人的研究结论对比,验证了EFG法用于时变参数结构分析的可行性。
Based on the global interpolating generalized moving least squares(IGMLS), the improved element-free Galerkin(EFG) method was applied to dynamics of an axially deploying and retracting flexible beam. The element-free transverse vibration equations were derived by the Hamilton principle and EFG method. The frequency characteristics and the free vibration of the beam with different axially rigid motion are calculated by this numerical method. By comparing with the existing research conclusions, the feasibility of the EFG method applied for the timevarying parameter systems was verified.
Based on the global interpolating generalized moving least squares(IGMLS), the improved element-free Galerkin(EFG) method was applied to dynamics of an axially deploying and retracting flexible beam. The element-free transverse vibration equations were derived by the Hamilton principle and EFG method. The frequency characteristics and the free vibration of the beam with different axially rigid motion are calculated by this numerical method. By comparing with the existing research conclusions, the feasibility of the EFG method applied for the timevarying parameter systems was verified.
引文