A New Conjugate Gradient Method and Application to Dynamic Load Identification Problems

被引：2

作者：

Wang, Lin J. ^{[1
,2
]}

Gao, Xiang ^{[1
]}

Xie, You X. ^{[3
]}

Fu, Jun J. ^{[1
]}

Du, Yi X. ^{[1
]}

机构：

[1] China Three Gorges Univ, Coll Mech & Power Engn, Hubei Key Lab Hydroelect Machinery Design & Maint, Yichang 443002, Hubei, Peoples R China

[2] Queensland Univ Technol, Sch Chem Phys & Mech Engn, Brisbane, Qld 4001, Australia

[3] China Three Gorges Univ, Coll Sci Technol, Yichang, Peoples R China

来源：

INTERNATIONAL JOURNAL OF ACOUSTICS AND VIBRATION | 2021年 / 26卷 / 02期

基金：

中国国家自然科学基金;

关键词：

FORCE IDENTIFICATION; REGULARIZATION METHOD; RECONSTRUCTION; ITERATION;

D O I：

10.20855/ijav.2021.26.21746

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

In this paper, a modified conjugate gradient (MCG) algorithm is proposed for solving the force reconstruction problems in practical engineering. This new method is derived from a stable regularization operator and is also strictly proved using the mathematical theory. Moreover, we also prove the sufficient descent and global convergence characteristic of the newly developed algorithm. Finally, the proposed algorithm is applied to force reconstruction for the airfoil structure and composite laminated cylindrical shell. Numerical simulations show that the proposed method is highly efficient and has robust convergence performances. Additionally, the accuracy of the proposed algorithm in identifying the expected loads is satisfactory and acceptable in practical engineering.

引用

页码：121 / 131

页数：11

共 30 条

[1]

[Anonymous], 1970, INTEGER NONLINEAR PR

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