基于 FSDT 的雅各比-里兹法对具有一般边界条件的功能分级圆柱壳进行动态分析

IF 4.4 2区 工程技术 Q1 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS
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引用次数: 0

摘要

本研究采用 Jacobi-Ritz 方法介绍了均匀功能分级(FG)圆柱壳的振动行为。采用一阶剪切变形理论(FSDT)和域分解法(DDM)建立理论模型。利用人工弹簧实现了 FG 圆柱壳的复杂约束。雅可比正交多项式结合傅里叶级数可以展开表示结构的容许位移场。最后,采用 Rayleigh-Ritz 方法求解自由振动和强迫振动行为。FG 圆柱壳的瞬态振动行为采用 Newmark-β 积分法求解。为验证 Jacobi-Ritz 方法的有效性,进行了收敛性研究,给出了 FG 圆柱壳在边界条件、材料参数、激励载荷形式和几何尺寸等不同影响因素下的计算结果,并将有限元计算结果与已发表的文献进行了比较。计算结果表明,该方法精度高,可为 FG 圆柱壳的振动控制提供理论依据。本研究采用 Jacobi-Ritz 方法介绍了均匀功能分级(FG)圆柱壳的振动行为。采用一阶剪切变形理论(FSDT)和域分解法(DDM)建立理论模型。利用人工弹簧实现了 FG 圆柱壳的复杂约束。雅可比正交多项式结合傅里叶级数可以展开表示结构的容许位移场。最后,采用 Rayleigh-Ritz 方法求解自由振动和强迫振动行为。FG 圆柱壳的瞬态振动行为采用 Newmark-β 积分法求解。为验证 Jacobi-Ritz 方法的有效性,进行了收敛性研究,给出了 FG 圆柱壳在边界条件、材料参数、激励载荷形式和几何尺寸等不同影响因素下的计算结果,并将有限元计算结果与已发表的文献进行了比较。计算结果表明,该方法精度高,可为 FG 圆柱壳的振动控制提供理论依据。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Jacobi-Ritz method for dynamic analysis of functionally graded cylindrical shell with general boundary conditions based on FSDT
This study introduces the vibration behavior of uniform functionally graded (FG) cylindrical shells by Jacobi-Ritz method. The first-order shear deformation theory (FSDT) and domain decomposition method (DDM) are used to establish the theoretical model. The complex constraint of FG cylindrical shells is realized by using artificial springs. The Jacobi orthogonal polynomials combined with Fourier series can be expanded to denote the admissible displacement field of the structure. Finally, the Rayleigh-Ritz method has been adopted to solve the behavior of free vibration and forced vibration. The transient vibration behavior of FG cylindrical shells is solved in accordance with Newmark-β integration method. For verify the validity of Jacobi-Ritz method, the convergence study is carried out, and the calculation results of FG cylindrical shells with various influencing factors such as boundary conditions, material parameters, excitation load forms and geometric dimensions are given, and the FEM results and published literature are compared. The computation show that the method has high precision and can supply theoretical basis for vibration control of FG cylindrical shell. This study introduces the vibration behavior of uniform functionally graded (FG) cylindrical shells by Jacobi-Ritz method. The first-order shear deformation theory (FSDT) and domain decomposition method (DDM) are used to establish the theoretical model. The complex constraint of FG cylindrical shells is realized by using artificial springs. The Jacobi orthogonal polynomials combined with Fourier series can be expanded to denote the admissible displacement field of the structure. Finally, the Rayleigh-Ritz method has been adopted to solve the behavior of free vibration and forced vibration. The transient vibration behavior of FG cylindrical shells is solved in accordance with Newmark-β integration method. For verify the validity of Jacobi-Ritz method, the convergence study is carried out, and the calculation results of FG cylindrical shells with various influencing factors such as boundary conditions, material parameters, excitation load forms and geometric dimensions are given, and the FEM results and published literature are compared. The computation show that the method has high precision and can supply theoretical basis for vibration control of FG cylindrical shell.
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来源期刊
Computers & Structures
Computers & Structures 工程技术-工程:土木
CiteScore
8.80
自引率
6.40%
发文量
122
审稿时长
33 days
期刊介绍: Computers & Structures publishes advances in the development and use of computational methods for the solution of problems in engineering and the sciences. The range of appropriate contributions is wide, and includes papers on establishing appropriate mathematical models and their numerical solution in all areas of mechanics. The journal also includes articles that present a substantial review of a field in the topics of the journal.
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