A number of related techniques of importing modal neutral file from ANSYS to ADAMS are described.
介绍了从ANSYS软件向ADAMS软件中导入模态中性文件的一些相关技巧。
But its effectiveness is based on accuracy of modal testing, while the measurement locations and the number of transducers have a decisive effect on testing results.
但其有效性的基础是建立在模态测试的准确性上，而传感器布设的位置、数量对测试结果起决定作用。
The effective law on the frequence and modal of vibration due to the fluid velocity, the fluid press and the number of elements was obtained.
得出流体流速、流体压力、划分单元个数等对管道的频率和振型的影响规律。
The decision principle of mode number is: when the error of base shear and top displacement are both below 5%, the sum of modal participating mass ratio should exceed 90%;
研究结果表明：高层建筑结构抗震设计中高振型的影响不容忽视，在底部剪力和顶端位移误差小于5%的情况下，累计质量参与系数应大于90%；
The direct modal perturbation based on selecting point by number-theoretic method is proposed to find the random response of un-damping linear random structures.
针对于多自由度线性复合随机结构的随机自振特性分析，提出了基于数论选点的直接模态摄动法。
The direct modal perturbation based on selecting point by number-theoretic method is proposed to find the random response of un-damping linear random structures.
针对于多自由度线性复合随机结构的随机自振特性分析，提出了基于数论选点的直接模态摄动法。
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