首页|A Multiscale Model of Mass-Functionally Graded Beam-Fluid System Under Bending and Vibration Responses

A Multiscale Model of Mass-Functionally Graded Beam-Fluid System Under Bending and Vibration Responses

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In this paper,a multiscale model is developed for the mass functionally graded(FG)beam-fluid system to investigate its static and dynamic responses based on 3D printed porous beam free vibration tests,which are determined by two aspects.At the microstructural level,the gradient variation is realized by arbitrary distribution of matrix pores,and the effective moduli under specific distribution are obtained using the micromechanics homogenization theory.In the meantime,at the structural level,the mechanical responses of FG porous beams subjected to mass loading are considered in a static fluid environment.Then,the explicit expressions of local finite-element(FE)expressions corresponding to the static and dynamic responses are given in the appendices.The present results are validated against numerical and experimental results from the literature and mechanical tests of 3D printed structures,with good agreement generally obtained,giving credence to the present model.On this basis,a comprehensive parametric study is carried out,with a particular focus on the effects of boundary conditions,fluid density,and slenderness ratio on the bending and vibration of FG beams with several different gradations.

3D printed testMass functionally graded beam-fluid systemMultiscale modelLocal finite-element expressionsStatic bendingFree vibration

Lei Zhang、Jianping Lin、Jiaqing Jiang、Guannan Wang

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Department of Civil Engineering,Zhejiang University,866 Yuhangtang Road,Hangzhou 310058,China

Center for Balance Architecture,Zhejiang University,Hangzhou 310007,China

College of Civil Engineering,Huaqiao University,Xiamen 361021,China

Key Laboratory for Intelligent Infrastructure and Monitoring of Fujian Province,Huaqiao University,Xiamen 361021,China

Department of Engineering Mechanics,Zhejiang University,Hangzhou 310027,China

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国家重点研发计划国家自然科学基金国家自然科学基金国家自然科学基金ZJU-ZCCC Institute of Collabora-tive Innovation

2020YFA0711700123222065237815812302205ZDJG2021002

2024

10.1007/s10338-023-00450-8

固体力学学报(英文版)
中国力学学会

固体力学学报(英文版)

EI
影响因子：0.214
ISSN：0894-9166
年,卷(期)：2024.37(2)
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