Moment-Based Hybrid Polynomial Chaos Method for Interval and Random Uncertain Analysis of Periodical Composite Structural-Acoustic System with Multi-Scale Parameters

被引：1
|
作者：
Chen, Ning [1 ]
Chen, Jiaojiao [1 ]
Yin, Shengwen [2 ]
机构：
[1] Cent South Univ Changsha, Sch Traff & Transportat Engn, Changsha 410075, Hunan, Peoples R China
[2] Hunan Univ, State Key Lab Adv Design & Mfg Vehicle Body, Changsha 410082, Hunan, Peoples R China
来源：
INTERNATIONAL JOURNAL OF COMPUTATIONAL METHODS | 2021年 / 18卷 / 04期
基金：
中国国家自然科学基金;
关键词：
Periodical composites structural-acoustic system; homogenization method; hybrid uncertain model; moment-based arbitrary polynomial chaos; FINITE-ELEMENT-METHOD; RELIABILITY-ANALYSIS; QUANTIFICATION;
D O I：
10.1142/S0219876220500413
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
An interval and random moment-based arbitrary polynomial chaos method (IRMAPCM) is proposed in this paper for the analysis of periodical composite structural-acoustic systems with multi-scale uncertain-but-bounded parameters. In IRMAPCM, the response of structural-acoustic system is approximated as moment-based arbitrary polynomial chaos (maPC) expansion. IRMAPCM can construct the polynomial basis according to the moment of the random variable without knowing the Probability Density Function (PDF), which can avoid the errors introduced by estimating the PDF. Numerical examples of a hexahedral box and an automobile passenger compartment are given to investigate the effectiveness of IRMAPCM for the prediction of the sound pressure response of structural-acoustic systems.
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页数：25
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