Evaluation of Quasi-Static Axial Crushing Characteristics of Laterally Grooved Square Tube

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概要

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• In this paper, the axial crushing behavior of square tubes with grooved surface are studied by using the finite element method. The grooved surface is a dominant factor that influences the deformation mode, and improves the energy absorbing capacity of the square tube. The numerical results show that the average stress of a grooved square tube is affected by the geometry and period of groove. The average stress of the grooved square tube, however, is the same without dependence on width when the geometry and the period of groove are identical. Furthermore, the analysis results of the model predict two modes, called the extensible mode and the inextensible mode, which depend on the aspect ratio. In addition, the average stress predicted by using a master curve and approximation equations for the simple square tube is found to agree well with the results of finite element method analysis.

著者

• USHIJIMA Kuniharu

  Department of Mechanical Engineering, Kyushu Sangyo University

• Chen Dai-heng

  Department Of Mechanical Engineering Jiang Nan University

関連論文

• Evaluation of the Mechanical Properties of Lightweight Lattice Structures Subjected to Compressive Loading Part I : Analytical Approach for the Initial Stiffness and Plastic Collapse Strength
• Evaluation of Quasi-Static Axial Crushing Characteristics of Laterally Grooved Square Tube
• Analysis of Plasticity-Induced Crack Closure by the Extended Body Force Method : (Comparison of Various Analytical Results Based on Dugdale Hypothesis)

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