A Combined Shape and Topology Optimization Based on Isogeometric Boundary Element Method for 3D Acoustics
作者机构：CAS Key Laboratory of Mechanical Behavior and Design of MaterialsDepartment of Modern MechanicsUniversity of Science and Technology of ChinaHefei230026China
出 版 物：《Computer Modeling in Engineering & Sciences》 (工程与科学中的计算机建模（英文）)
年 卷 期：2021年第127卷第5期
页 面：645-681页
核心收录：
学科分类：07[理学] 0701[理学-数学] 070101[理学-基础数学]
基 金：This study was financially supported by the National Natural Science Foundation of China(NSFC)under Grant No.11772322 the Strategic Priority Research Program of the Chinese Academy of Sciences under Grant No.XDB22040502
主 题：Combined shape and topology optimization isogeometric boundary element method shape sensitivity analysis topology sensitivity analysis adjoint variable method sound absorption material
摘 要：A combined shape and topology optimization algorithm based on isogeometric boundary element method for 3D acoustics is developed in this *** key treatment involves using adjoint variable method in shape sensitivity analysis with respect to non-uniform rational basis splines control points,and in topology sensitivity analysis with respect to the artificial densities of sound absorption *** tool in Fortran code is adopted to improve the efficiency of *** consider the features and efficiencies of the two types of optimization methods,this study adopts a combined iteration scheme for the optimization process to investigate the simultaneous change of geometry shape and distribution of material to achieve better noise *** examples,such as sound barrier,simple tank,and BeTSSi submarine,are performed to validate the advantage of combined optimization in noise reduction,and to demonstrate the potential of the proposed method for engineering problems.
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