Acoustic boundary element analysis based on point cloud data
ZHUANG Chao1,2, Liu Hanguang1,2,Kang Kaixuan1,2，SU Junshou1,2
1.Jiangsu Xuzhou Construction Machinery Research Institute, Xuzhou Construction Machinery Group, Xuzhou 221004, China;
2.Sate Key Laboratory of Intelligent Manufacturing of Advanced Construction Machinery, Xuzhou 221004, China
Abstract：A boundary element method for acoustical problems based on point cloud data was proposed, which combines the reverse engineering with the acoustic boundary element numerical algorithm.The irregular point cloud grid obtained by scanning was optimized to a regular grid element model with well shape, suitable for numerical calculation.The CAD geometrical model was seamlessly connected with the CAE simulation analysis.An example of the acoustic propagation problem for a small suction sweeper van body was given in detail.Comparing the results with those of the traditional acoustic boundary element simulation, the validity and feasibility of the method were proved.
庄 超1,2，刘汉光1,2，康凯旋1,2，苏俊收1,2. 基于点云数据的声学边界元分析方法[J]. 振动与冲击, 2018, 37(18): 231-235.
ZHUANG Chao1,2, Liu Hanguang1,2,Kang Kaixuan1,2，SU Junshou1,2. Acoustic boundary element analysis based on point cloud data. JOURNAL OF VIBRATION AND SHOCK, 2018, 37(18): 231-235.
[1] Meyer WL, Bell WA, Zinn B T, Stallybrass M P. Boundary integral solutions of three dimensional acoustic radiation problems. Journal of Sound and Vibration, 1978, 59(2):245-262.
[2] Kleinman R E, Roach G F. Boundary Integral Equations for the Three-Dimensional Helmholtz Equation[J]. Siam Review, 1974, 16(2):214-236.
[3] 张俊杰,原春晖,刘彦，等. 基于解析解和边界元解的圆柱壳声辐射对比研究[J]. 振动与冲击, 2013, 32(4): 1-5.
ZHANG Jun-jie, YUAN Chun-hui, LIU Yan et al. The comparative study of sound radiation of cylindrical shell based on analytical solution and Boundary Element Method[J]. Journal of Vibration and Shock, 2013, 32(4): 1-5.
[4]刘伟军，孙玉文等编著. 逆向工程-原理、方法及应用[M]. 北京:机械工业出版社, 2008.
LIU Wei-jun, SUN Yu-wen. Principle method and application of reverse engineering[M]. Beijing: Mechanical Industry Press, 2008.
[5] 赵岩，江建明，李筱贺，等. 中下胸椎肋椎单元三维有限元模型的建立[J]. 中国组织工程研究，2012， 16(22):3996-4000.
ZHAO Yan, JIANG Jian-ming, LI Xiu-he et al. Establishing three-dimensional finite element model of the rib vertebral unit of the middle and lower thoracic vertebra[J]. Chinese Journal of Tissue Engineering Research, 2012, 16(22):3996-4000.
[6] 李筱贺,李志军,李少华，等. CT扫描结合逆向工程软件建立下胸椎三维有限元模型[J]. 中国组织工程研究与临床康复, 2010, 14(4):594-597 .
LI Xiu-he, LI Zhi-jun, LI Shao-hua, et al. Reconstruction of a three-dimensional finite element model of lower thoracic vertebrae using CT in combination with reverse engineering software[J]. Chinese Journal of Tissue Engineering Research, 2010, 14(4):594-597 .
[7] Y. H. Chen, C.T. Ng, Y.Z. Wang. Data reduction in integrated reverse engineering and rapid prototyping[J]. International Journal of Computer Integrated Manufacturing, 1999, 12(2):97-103.
[8] 曹万秋. 基于逆向工程的复杂曲面重构技术的研究[D]. 沈阳：东北大学. 2011
[9] 宋德华. 基于柴油发动机缸盖的逆向工程研究[D]. 郑州： 郑州大学. 2014
[10] 沈建国，陈志杨，张引，等.面向有限元分析的三角网格迭代优化.计算机辅助设计与图形学学报，2009, 21(12).
SHEN Jian guo, CHEN Zhi-yang, ZHANG Yin, et al. Iterative Optimization of Triangle Meshing for FEM Analysis[J].Journal of Computer-Aided Design & Computer Graphics, 2009, 21(12): 1715-1721.
[11] Alliez P, Verdire R C D, Devillers O, et al. Isotropic Surface Remeshing[C]//Shape Modeling International. IEEE, 2003:49-58.
[12] Botsch M, Steinberg S, Bischoff S, et al. OpenMesh: A generic and efficient polygon mesh data structure[J]. Opensg Symposium, 2002.
[13] Prof. Dr. L. Kobbelt. OpenMesh. [EB/OL]. http ://www.openmesh.org, 2013-6-3.
[14]Botsch M, Kobbelt L. A remeshing approach to multiresolution modeling[C]// Eurographics/acm Siggraph Symposium on Geometry Processing. DBLP, 2004:185-192.
[15] Chen L H, Schweikert D G. Sound Radiation from an Arbitrary Body[J]. Journal of the Acoustical Society of America, 1963, 35(10):1626-1632.
