Dunaj Paweł, Berczyński Stefan, Chodźko Marcin, Niesterowicz Beata
Department of Mechanical Engineering and Mechatronics, West Pomeranian University of Technology, Szczecin, al. Piastów 19, 71-310 Szczecin, Poland.
Materials (Basel). 2020 Apr 1;13(7):1630. doi: 10.3390/ma13071630.
This paper presents a method for modeling the dynamic properties of steel-polymer concrete beams, the basic structural components of machine tools, assembly lines, vibratory machines, and other structures subjected to time-varying loads during operation. The presented method of modeling steel-polymer concrete beams was developed using the finite element method. Three models of beams differing in cross-sectional dimensions showed high agreement with experimental data: relative error in the case of natural frequencies did not exceed 5% (2.2% on average), the models were characterized by the full agreement of mode shapes and high agreement of frequency response functions with the results of experimental tests. Additionally, the developed beam models supported the reliable description of complex structures, as demonstrated on a spatial frame, obtaining a relative error for natural frequencies of less than 3% (on average 1.7%). Full agreement with the mode shapes and high agreement with the frequency response functions were achieved in the analyzed frequency range.
本文提出了一种对钢-聚合物混凝土梁动态特性进行建模的方法，钢-聚合物混凝土梁是机床、装配线、振动机械及其他在运行过程中承受时变载荷的结构的基本结构部件。所提出的钢-聚合物混凝土梁建模方法是使用有限元法开发的。三种横截面尺寸不同的梁模型与实验数据高度吻合：固有频率的相对误差不超过5%（平均为2.2%），模型的振型完全一致，频率响应函数与实验测试结果高度吻合。此外，所开发的梁模型支持对复杂结构进行可靠描述，如在一个空间框架上所展示的那样，固有频率的相对误差小于3%（平均为1.7%）。在分析的频率范围内，振型完全一致，频率响应函数高度吻合。
