风载荷对某发射装置待发射状态的影响

应用冯.卡门功率谱和谐波合成法生成了考虑脉动效应的瞬时风速时程曲线;计算了发射筒各段的等效风压及等效力矩,给出了作用于发射筒迎风面的风压总值及等效力矩;最后将载荷作为输入条件,进行动力学分析,获得了风载荷作用下发射装置的动态响应。通过分析可知:由于发射装置具有刚度强、质量大的特点,风载荷作用下发射装置的速度、加速度响应均较低,因此,风载荷主要影响发射筒的倾斜程度。

Influence of Wind Load on to-be-launched Status Condition of a Launching Device

Time history curve of instantaneous wind speed considering the pulse effect is generated by using Von Karman power spectrum and harmonic synthesis method.The equivalent wind pressure and equivalent torque of the launch tube section are calculated.The total value of wind pressure acting on the frontal surface of the launch tube and its equivalent moment are given.Taking the load as the input condition,then dynamic analysis is conducted and the dynamic response of the launching device under wind load is obtained.The analysis shows that because of strong rigidity and large masses,the velocity and acceleration response of the launching device under wind load are relatively low,wind load mainly affects tilt level of launching tube.