噪声与振动控制2016，Vol.36Issue(2)：205-208,4.DOI:10.3969/j.issn.1006-1335.2016.02.045
低频簧片仪冲击特性与破坏规律分析
Analysis of Shock Characteristics and Failure Law for Low-frequency Reed Gage
摘要
Abstract
Low-frequency reed gage is the main apparatus for low-frequency shock spectrum test. Its structure consists of a series of cantilever beams with lumped-masses and different natural frequencies. When the ship is shocked by the explosion, these cantilever beams will yield plastic deformation or fracture so that the measurement results may include errors. In order to analyze the anti-shock function of the cantilever beams, the modal superposition method was employed to establish a theoretical model for the mass-lumped cantilever beams subjected to the impact load. Their dynamic response to the impact load and the failure law were analyzed. The results show that the higher natural frequency of the cantilever beams can lead to larger peak stress so that the plastic deformation and fracture in the beams may occur more easily. For the mass-lamped cantilever beams, the damage capability of the impact load is only related to the limit spectrum displacement. The damage capability increases with the increasing of the spectrum displacement. Negative wave delay has some influence on the destructive potential for the mass-lumped cantilever beams. This influence can be considered by increasing the limit spectrum displacement in conventional anti-shock design.关键词
振动与波/低频簧片仪/集中质量悬臂梁/冲击特性/破坏规律Key words
vibration and wave/low-frequency reed gage/lumped-mass cantilever beam/shock characteristics/failure law分类
通用工业技术引用本文复制引用
傅健,孟丽丽,赵鹏铎,孙淑霞..低频簧片仪冲击特性与破坏规律分析[J].噪声与振动控制,2016,36(2):205-208,4.基金项目
国家自然科学基金青年基金资助项目 （）
