first modal shape meaning in English
一阶模态
Examples
- Neural network ' s training and damage detection influenced by input vectors which include the group of the first three frequencies or the group of the first three frequencies as well as the first modal shape , are studied
比较了仅以三阶频率作为神经网络输入向量和三阶频率及一阶振型组合作为网络输入向量对网络训练和损伤检测结果的影响。 - This thesis will present a new simple method to calculate the seismic response of the framed structures . this method calculates the effect of the first and second modal vibration . the first modal shear force of every floor distributes according to the shape which is close to the first modal shape
本论文提出了一种新的计算框架结构地震作用效应的简化方法，考虑前两个振型的作用，对于第一振型的各层剪力，按照近似于基本振型的形状分布，第二振型各层剪力引用廖河山提出的方法计算，然后用将两个振型的剪力“平方和开平方”的方法，计算得到各层剪力(总效应) 。