【作者】 杜孝文； 陈天宁； 王小鹏； 陈卫华； 万乐乐； 王放；

【Author】 Du Xiao-wen;Chen Tian-ning;Wang Xiao-peng;Chen Wei-hua;Wan Le-le;Wang Fang;State Key Laboratory for Strength and Vibration of Mechanical Structures Xi’an Jiaotong University;

【机构】 机械结构强度与振动国家重点实验室西安交通大学；

【摘要】 多孔金属材料作为一种新型多功能材料因其优良的声学性能广泛应用于航空、航天、能源及交通等领域的减振降噪中。为了实现对多孔金属材料的吸声性能进行预测以更好的满足应用要求,本文采用COMSOL Multiphysics对材料的声学性能进行有限元仿真,并与实验结果对比,验证了仿真的正确性;同时对不同厚度、孔隙率以及不同背后空腔深度下的材料的声学性能进行有限元仿真,获得具有与实验测试相一致的仿真结果,再次验证了仿真的正确性与可行性;为多孔金属材料的声学性能的预测提供重要依据,具有重要的理论意义与实际价值。更多还原

【Abstract】 Porous metal materials are widely used in aero, resource, transportations and so on because of its excellent acoustic properties as a newly multi-functional material. In order to predict the sound absorption performances of porous metal materials to satisfy the practical uses better, the paper adopts the finite element software ‘COMSOL Multiphysics’ to conduct the simulation of the sound absorption performances of porous metal materials and compare the results with the experimental tests, which verifies the correctness and flexibility of the finite element simulation. And we also complete the simulation of porous metal materials which have different structural parameters(such as porous metal material thickness, porosity, different air cavity depth) and get results which are in accordance with the experimental tests, which verifies the correctness of the finite element simulation and is of great theoretical significance and practical value.更多还原