张拉整体结构外力与形变间关系分析及实验验证  

Analysis and experimental verification of relationship between external force and deformation of tensegrity structures

作　　者：李团结[1] 车明奎 

机构地区：[1]西安电子科技大学机电工程学院,陕西西安710071

出　　处：《西安电子科技大学学报》2017年第1期24-28,共5页Journal of Xidian University

基　　金：国家自然科学基金资助项目(51375360)

摘　　要：针对张拉整体结构中杆件只受轴向压力,绳索和弹簧等只受轴向拉力的情况,采用拉格朗日动力学和样机实验,对外力作用下张拉整体结构中弹簧变形量进行了分析和测量.首先,推导了张拉整体结构平衡状态的力学模型,对非保守力作用下张拉整体结构弹簧的变形量进行了计算;然后,通过三杆六索张拉整体结构样机实验,对弹簧变形量进行了测量.实验与计算结果的对比分析,验证了张拉整体结构力学模型的合理性,揭示了外力与形变间的内在数学关系.The tensegrity structures suffer the axial pressure in struts and the axial tension in cables and springs, so they are widely used in many engineering fields such as architecture, biotechnology, aerospace and robotics. Based on the Lagranglan dynamics and prototype experiment, the spring deformation of the tensegrity structure under the action of external forces is analyzed and measured. First, the dynamic model of the equilibrium state of the tensegrity structure is derived. The spring deformation of the tensegrity structure under the action of external noneonservative forces is analyzed. Then, by means of the prototype experiment on the tensegrity structure with six struts and three cables, the spring deformation is measured. The comparison and analysis between the experimental and numerical results validate the dynamic model of the tensegrlty structure and reveal the mathematical relation between external forces and deformation of the tensegrity structure.

关 键 词：张拉整体结构 变形 弹簧 实验 力学 

分 类 号：TH112[机械工程—机械设计及理论]