南京航空航天大学振动工程研究所机械结构力学及控制国家重点实验室 南京 210016
TP311.5TN06
航空科学基金（20141552014）项目资助
State Key Laboratory of Mechanics and Control of Mechanical Structures Institute of Vibration Engineering，Nanjing University of Aeronautic and Astronautic，Nanjing 210016，China
针对工程中通常采用模态置信度准则来评估有限元模型的准确性；缺少从整体上评估有限元模型的参数；并且缺少能快速进行定性评价以及人性化界面的计算程序等问题，通过将计算频率和振型与试验结果对比，建立不同的权重系数，根据模糊评估理论提出一种综合评估有限元模型的方法，并设计出了以MATLAB编程为核心、并调用Nastran有限元软件的模型评估计算程序，该程序可利用MATLAB和Nastran的强大计算能力，进行一系列如模态计算、矩阵提取、自由度匹配、模型评估等工作。该程序操作简单，结果可靠，可用于及时获取结构有限元模型的信息，并且能进行有限元模型的综合评估工作。
In this paper, by compared with the frequency and vibration mode with test results, set up different weight coefficient, a finite element model of a comprehensive evaluation method have been proposed. With this method, designed the dynamic programming based on MATLAB programming, and call the finite element software of Nastran, The program can use the powerful computing capacity of MATLAB and Nstran, a series of work can be do, such as matrix extract, freedom match and model evaluation. The procedure is simple and reliable results, it can be used to obtain the finite element model structure information, and can be quickly applied to engineering practice.
余好文,王轲.基于MATLAB的有限元模型评估程序设计[J].国外电子测量技术,2016,35(10):96-100
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