Free vibration analyses of 3D printed plates with different geometric fillings: experimental testing and numerical simulations

Ahmet Yildiz, Emre İbram, Onur Erol, Hande Güler Özgül
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Abstract

In this article, the numerical and experimental free vibration analyses of PLA-based composite plates with different filling geometries were carried out. Firstly, the natural frequencies and modal shapes were obtained from finite element (FE) methods to characterize the vibration behavior of the plates. The obtained results were compared with experimental testing of the three-dimensional (3D) produced plates. In the comparison, it was seen that the finite element analysis and the experimental results were quite close to each other. It was also observed that the highest frequencies are measured by a triangle, then the grid and honeycomb. Moreover, higher frequencies and lower weights are possible with the triangle pattern fill. On the other hand, it is noted that the types of filling structures do not affect the modal shapes of the 3D plates. Thus, the results of this paper are of utmost importance for getting light structure and high frequencies.
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具有不同几何填充物的 3D 打印板的自由振动分析:实验测试和数值模拟
本文对具有不同填充几何形状的聚乳酸基复合材料板进行了自由振动数值分析和实验分析。首先,通过有限元(FE)方法获得了板材的固有频率和模态振型,从而描述了板材的振动行为。获得的结果与三维(3D)板材的实验测试结果进行了比较。比较结果表明,有限元分析和实验结果非常接近。同时还观察到,三角形测得的频率最高,然后是网格和蜂窝。此外,三角形图案填充物的频率更高,重量更轻。另一方面,我们注意到填充结构的类型并不影响三维板的模态形状。因此,本文的研究结果对于获得轻质结构和高频率至关重要。
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