Geometry impact on the stability behavior of cylindrical microstructures: Computer modeling and application for small-scale sport structures

Yunzhong Dai, Zhiyong Jiang, Kuan-yu Chen, Duquan Zuo, Mostafa habibi, H. Elhosiny Ali and Ibrahim Albaijan

Abstract

This paper investigates the stability of a bi-directional functionally graded (BD-FG) cylindrical beam made of imperfect concrete, taking into account size-dependency and the effect of geometry on its stability behavior. Both buckling and dynamic behavior are analyzed using the modified coupled stress theory and the classical beam theory. The BD-FG structure is created by using porosity-dependent FG concrete, with changing porosity voids and material distributions along the pipe radius, as well as uniform and nonuniform radius functions that vary along the beam length. Energy principles are used to generate partial differential equations (PDE) for stability analysis, which are then solved numerically. This study sheds light on the complex behavior of BD-FG structures, and the results can be useful for the design of stable cylindrical microstructures.

Key Words

functionally graded materials; nonuniform cross-section; numerical analysis; stability analysis; truncated conical beam

Address

Yunzhong Dai:1)Intelligent Manufacturing Institute, Yibin Vocational and Technical College, Yibin 644003, Sichuan, China 2)Sichuan Dawn Precision Technology Co., Ltd., Meishan 620460, Sichuan, China 3)School of Aeronautics and Astronautics, University of Electronic Science and Technology of China, Chengdu 611731, Sichuan, China Zhiyong Jiang:Engineering Comprehensive Training Center, Guilin University of Aerospace Technology, Guilin 541004, Guangxi, China Kuan-yu Chen:Yulin Normal University, School of Political Science and Law, Yulin 537000, Guangxi, China Kuan-yu Chen, Duquan Zuo, Mostafa habibi, H. Elhosiny Ali and Ibrahim Albaijan Mostafa habibi:1)Faculty of Architecture and Urbanism, UTE University, Calle Rumipamba S/N and Bourgeois, Quito, Ecuador 2)Department of Biomaterials, Saveetha Dental College and Hospital, Saveetha Institute of Medical and Technical Sciences, Chennai 600 077, India 3)Center of Excellence in Design, Robotics, and Automation, Department of Mechanical Engineering, Sharif University of Technology, Azadi Avenue, P.O. Box 11365-9567, Tehran, Iran 4)Institute of Research and Development, Duy Tan University, Da Nang 550000, Vietnam H. Elhosiny Ali:Department of Physics, Faculty of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia Ibrahim Albaijan:Mechanical Engineering Department, College of Engineering at Al Kharj, Prince Sattam Bin Abdulaziz University, Al Kharj 11942, Saudi Arabia

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