噪声与振动控制2012，Vol.32Issue(2)：41-44,4.DOI:10.3969/j.issn.1006-1355-2012.02.010
半正弦波脉冲激励下斜支承系统冲击特性
Shock Characteristics Analysis of the System with Tilted Support under the Action of Half-sinusoidal Pulse
孔凡玲 1陈安军1
作者信息
- 1. 江南大学包装工程系,江苏无锡214122
- 折叠
摘要
Abstract
The geometrically nonlinear impact dynamical equations of a structural system with tilted spring supports were established under the action of semi-sinusoidal impulse. To evaluate the shock characteristics of the tilted spring supports, a new concept of three-dimensional shock response spectra was proposed. The ratio of the maximum shock response acceleration of the system to the peak pulse acceleration, the angle of the tilted spring support and the dimensionless pulse duration were three basic parameters of the three-dimensional shock response spectra. The effects of the angle of tilted spring support, the dimensionless pulse duration, the dimensionless peak pulse acceleration and damping ratio on the shock response were analyzed using the fourth order Runge-Kutta method. It is shown that there is a sensitive area of the shock response to the dimensionless pulse duration, and this area can be avoided by controlling the stiffness of the tilted spring support. The effects of the angle of the tilted support of the system are noticeable. As the angle of the tilted support of the system is reduced, the sensitive area of the maximum shock response of the system will be expanded. As the peak pulse acceleration is increased, the maximum shock response of the system will fluctuate violently and the sensitive area will be expanded. Increasing the damping can obviously improve the anti-shock characteristics of the system.关键词
振动与波/斜支承弹簧系统/半正弦激励/非线性/冲击谱/冲击特性Key words
vibration and wave / tilted support spring system / half-sinusoid pulse / nonlinear/ shock response spectra/shock characteristics分类
数理科学引用本文复制引用
孔凡玲,陈安军..半正弦波脉冲激励下斜支承系统冲击特性[J].噪声与振动控制,2012,32(2):41-44,4.
