摘要
基于Eular-Bernoulli梁理论建立了火炮身管固有振动方程,给出了身管后坐、未后坐两种工况下固有频率的估算模型与矩阵表达式,并以某型常规火炮(小口径)为例进行了固有频率估算。估算结果表明,计算方法简便、实用,既避免了有限元法繁琐、复杂的计算过程,又保证了一定的计算精度,可粗略满足工程需求。同时,计算模型灵活、通用,可适用于多类火炮及相关装备的固有频率估算。
The natural vibration equation of barrel were developed based on Eular-Bernoulli beam theory.The models and computing matrices,which used to evaluate the natural frequency of barrel,were given during two different working cases,namely,initial stage and recoil stage.Take example for small-caliber gun,the natural frequency were evaluated.The evaluating results indicated that the computing method adopted in this paper is convenient and utilizable.It can avoid the complicated computing process,that was inevitable if the finite element method was employed,ensure a certain extent computing accuracy and satisfy the engineering primary requirement.Meanwhile,the computing models are flexible and universal,which can be applied to evaluate the natural frequencies of other type guns and correlative equipment.
出处
《机械设计与制造》
北大核心
2010年第7期19-21,共3页
Machinery Design & Manufacture
基金
国家自然科学基金资助项目(50875259)
关键词
火炮
身管
振动
固有频率
Gun
Barrel
Vibration
Natural frequency
