We had made numerical and modal analysis on the dynamic feature of F320 model derrick with ANSYS software and modal analysis technique.
使用A NSYS有限元软件、实验模态分析技术对F320型石油井架模型的动态特性进行了数值与试验分析。
The finite element model was established first, then the modal analysis was processed, and accuracy of the model was verified by comparing the theoretical solution with the numerical solution.
文中首先建立了拉索的有限元模型，对该模型进行了模态分析，并通过理论解的计算验证了数值模型的准确性。
A methodology was put forward for damage location, and damage simulating as well as numerical calculation of modal analysis was carried out on a truss plane bridge by stiffness discount.
推导了基于测试频率平方变化比的损伤定位方法，利用有限元方法对一管道结构以刚度折减法进行了损伤模拟和模态分析数值计算。
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