【摘要】 利用 ABAQUS 有限元计算软件对在温度场下,某型火炮身管的前四阶固有频率和振型进行了计算和分析,发现温度场对炮管固有频率有一定的影响。在600℃时,其下降幅度达到室温下计算值的9%,为进一步分析火炮的动态响应和确定火炮的工作范围提供了依据。更多还原

【Abstract】 In this paper,ABAQUS FEM software is used to analyse the first four orders of natural fre- quencies and modes of gun tube in temperature field,the result shows that temperature field has certain influence on natural frequency,at 600℃,the reduced amplitude is about 9% of the computed value at room temperature.From this result,further analysis of the dynamic response of gun can be done and work domain defined.更多还原