工字钢梁 meaning in English
joist
steel i-beam
Examples
- 3 . based on the dynamic response of all damage cases , it discusses the indexes including frequencies , modal curvatures and their compounded index used in rbf networks . it is found that the method can identify the location and severity of the damage accurately and effectively and the compounded index is better than others
3 .根据简支工字钢梁各损伤工况下的动力特性,分别研究了将频率变化率、模态曲率变化及其组合参数作为径向基网络的输入指标时进行结构损伤识别的效果,发现基于径向基网络的梁式结构损伤识别方法能够正确识别损伤,且组合参数作为输入指标时的识别效果更好。 - It analyzes the dynamic response of many different damage cases of simple i - shape beam structure and discusses their influences to natural frequency and modal curvature . it is found that the natural frequency and modal curvature can be used in identifying the severity and location of structural damage respectively . dynamic response of some real beams are measured and compared to the results analyzed by computer , it is found that there are some differences between them and the main reason is the error caused by modeling
2 .针对土木结构中最为常见的梁式结构,对简支工字钢梁的多种不同损伤工况的动力特性进行了有限元仿真分析,研究了损伤对频率和模态曲率的影响,发现固有频率变化率和模态曲率的变化分别可以用于损伤程度和损伤位置的识别;在实验室中实测了几种工况的钢梁的振动模态,发现实测结果与计算结果有一定的差异,分析其原因主要是模型误差和噪声影响。