实验模态分析 meaning in English
experimental modal analysis
Examples
- Structural dynamic characteristic is related to structural physical parameter , and its theoretical value can be gained by finite element model ( fem ) analysis , while its practical value can be achieved by experimental modal analysis
结构的动力特性和结构物理参数直接相关，这些动力特性可以通过有限元分析得到其理论值，也可以由实验模态分析得到其实测值。 - And it could shorten the time to build the body model and ensure the enough accurate rate on engineering . secondly , the methods to deal with the welded spots in this dissertation are used to build the fem model of biw ( body in white )
然后,将本文对车身焊点的处理方法应用到白车身有限元模型的建立中,其有限元模态分析结果与样车的实验模态分析结果吻合较好。 - Sixth , low - order natural frequency has being obtained by the mode analysis experiment of machine tools , the dynamic parameters of combination surface jointed by bolts were identified by the synthesis of fea , optimal algorithm and harmonic response analysis
6 .研究了如何利用由实验模态分析测得整机的低阶固有频率,通过将有限元分析和优化算法、谐波响应分析相结合的方法,完成螺栓联接结合面的参数识别问题。 - As a classical and practical method in ambient vibration experimental modal analysis , auto - cross spectrum density method replace the frequency response function with power spectrum and achieve its mode shape from transmissibility between the response signals and reference signal
自互谱法作为环境激励实验模态分析的一种实用的经典方法,用响应点和参考点间的功率谱曲线来代替频响函数曲线,并由响应点和参考点之间响应的传递率得出振型。 - Finally , the random vibration analysis of the signal transform device is presented . experimental modal analysis is discussed briefly . the reasons why the relays on the printed circuit board were destroyed under random acceleration excitations are found out
本文最后对信号变换装置进行了随机振动响应分析，简要探讨了实验模态分析法，找出了装在印制电路板上的继电器在随机振动试验中被损坏的原因，也介绍了结构动力模型修正技术的发展。