In the model updating process, the experimentally measured frequenices and modal shapes should be used simultaneously when employing improved cross-model cross-mode (ICMCM) method.Here, the modal shapes of the finite element model of a structure were taken as those of its test model and then iterations were used to circumvent the drawback of lacking test modal shapes.Model updating for GARTEUR benchmark model using ICMCM method based on three international criteria and result comparisons with those of other foreign institutions using a traditional model updating method were presented.Results showed the feasibility of the ICMCM method and the advantages of the updated results for GARTEUR benchmark model.%改进的正交模型正交模态(ICMCM)法在进行模型修正过程中需要同时使用实验测得的频率及模态振型等数据.本文利用有限元模型的模态振型代替实验测量的模态振型并通过迭代解决了模型修正过程中缺少实验模态振型数据的问题,使ICMCM法具有更广的应用范围.根据国际认可的三级评价标准使用ICMCM法对GARTEUR飞机模型进行了修正,并与国际上其他单位的模型修正结果进行横向比较,结果证明了本文改进方法的可行性及修正结果的优越性.
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