Meshing Method of High Precision FEM in Large Complex Structural Simulations

Author:

Xue Yan Hua1,Wang Zhi Guang1,Li Xiao Hong2,Jiang Xin2

Affiliation:

1. Navy Submarine Academy

2. Naval Submarine Academy

Abstract

Shing is playing an important role in the large complex structural FEM simulations; it has a direct effect on calculating precision of structural simulations. For increasing the calculation accuracy and analysis accuracy of complex structure, the finite element meshing problems is proposed on the finite element analysis of large complicated structures. The effects caused by element type, mesh density and intergradations on calculating precision are studied and discussed. A research argues that with length-width ratio of 1~2 and length-thickness ration of 1.5~4.5 of two-dimensional rectangular element, the quality of meshing method of two-dimensional element is above normal. As the height of one-dimensional element is equal to the sum of reinforcing rib height of outer panel and half the thickness of panel, more accurate results can be obtained.

Publisher

Trans Tech Publications, Ltd.

Reference5 articles.

1. Du, Pingan. Principles of finite element meshing, Machinery Design & Manufacture, vol. 1, no. 1, pp.34-36, January 2000. (in Chinese).

2. Yu Chun, Zhou Xionghui, Zhang Yongqing, Research on feature-based mesh generation, Mechanical Science and Technology, vol. 18, no. 2, pp.210-212, March 1999. (in Chinese).

3. I. Babusuka, T. Strouboulis, S. K. Gangaraj, Practical aspect of a-posteriori estimation for reliable finite element analysis, Computer & Structure, vol. 66, no. 5, pp.627-664, May (1998).

4. Zhang Xiaojun, Xie Yonghe, Wu Guorong, FEM mesh constructing for multi-surfaces structure, Journal of Zhejiang Ocean University (nature science), vol. 26, no. 2, pp.51-55, February 2007. (in Chinese).

5. Landertshaman F., Steffan H., Method to Generation Complex Computational Meshes Efficiently, Communications in Numerical Methods in Engineering, vol. 10, no. 5, pp.373-384, May (1994).

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