【摘要】 应用有限元分析软件 ANSYS对 ZJ30 / 170 0 CZ型钻机井架分别在自然状态下和有钩载状态下进行模态分析 ,计算得出了井架的前 9阶模态频率及相对应的主振型。通过对井架的固有频率与钻机的设计工作转速的比较 ,并对各阶模态主振型的分析 ,得出该钻机井架结构设计合理的结论更多还原

【Abstract】 In this paper, the finite element analysis software (ANSYS) is applied to the modal analysis of model ZJ30/1700CZ drilling machine derrick under natural condition and loaded condition separately. The preceding 9 steps modal frequencies and the corresponding vibration modes of the derrick are calculated. By means of the comparison basic frequency of derrick with the design rotary speed of drilling machine and the analysis of each other step vibration modes, the drilling machine derrick structure design is proved to be correct.更多还原