基于NASTRAN的FRP反曲弓设计分析及寿命计算

弓箭作为我国非物质文化遗产及传统体育文化的一部分，应当受到继承与发扬．目前国内专门针对传统弓箭弓形受力的分析研究较少，现行弓箭基本停留在经验设计与制造层面上．为改进反曲弓制造工艺，本文设计了一款FRP片弓结构的反曲弓，通过对其进行有限元分析，找出了其应力集中处在弓把与弓臂的连接处，最大应力约为340MPa，并通过疲劳损伤累计理论估算最大应力（满载）下弓箭的寿命约为2年．

NASTRAN-based Design Analysis and Fatigue Life Calculation of FRP Recurve Bows

The bow and arrow as a part of the intangible cultural heritage and traditional sports culture of China should be inherited and developed. At present there is little specialized analysis of and research on the stress of the traditional bow and arrow and the manufacture of bows and arrows is mainly based on experience. In this research, a recurve bow is designed based on FRP, a finite element analysis of it is made, and its stress concentration is found to be at the junction connecting the bow handle and bow arm, where the maximum stress is 340 MPa. By the cumulative fatigue damage theory the life of the bow under the maximum stress is estimated about 2 years.