摘要
以点云数据作为声学边界元分析的基础数据,把逆向工程与声学边界元数值计算相结合。将扫描获取的不规则的点云网格优化处理为形状规则、满足数值计算的网格单元模型,以用于声学数值计算,实现了CAD几何模型与CAE仿真分析的无缝衔接,提出基于点云数据的声学边界元分析方法。以小型扫路机厢体声传播问题作为具体算例,与传统声学边界元仿真对比,得到了较高的吻合度,证明了该方法的有效性与可行性。
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.
作者
庄超
刘汉光
康凯旋
苏俊收
ZHUANG Chao;LIU Hanguang;KANG Kaixuan;SU Junshou(Jiangsu Xuzhou Construction Machinery Research Institute,Xuzhou Construction Machinery Group,Xuzhou 221004,China;Sate Key Laboratory of Intelligent Manufacturing of Advanced Construction Machinery,Xuzhou 221004,China)
出处
《振动与冲击》
EI
CSCD
北大核心
2018年第18期231-235,共5页
Journal of Vibration and Shock
基金
国家重点研发计划(2016YFC0802910)
关键词
点云数据
声学边界元
声传播
point cloud
acoustic boundary element
acoustic propagation
