自行火炮固有频率特性实验研究

为了研究自行火炮结构动态响应规律,以轮式和履带式火炮为研究对象进行了全炮模态测试,得到了全炮的固有频率及其相应模态.通过对轮式与履带式自行火炮系统振型分析,可以得到如下结论:对于轮式自行火炮和履带式自行火炮,在低频范围内从低到高其固有振型依次为全炮俯仰、平动和横滚；对于本文所选试验对象,履带式自行火炮全系统俯仰、平动和...

Experimental Research on Natural Frequency Characteristics of Self-propelled Guns

To investigate the structural dynamic rules of the self-propelled gun,the modal test experiments were carried out and the natural frequencies and the modes were obtained of the wheeled and tracked self-propelled guns.Analyzed their natural modes,it is concluded that,for both self-propelled guns,the natural modes from low to high frequency are pitch,fluctuation and roll;the natural frequencies in three modes of the tracked self-propelled gun are higher than those of the wheeled self-propelled gun;both operational and traditional modal analysis methods are suitable for the modal test of the wheeled self-propelled gun,and the operational modal analysis method is suitable for the modal test of the tracked self-propelled gun.