Affiliation:
1. Fujian-Taiwan Cooperative Institute of Civil Engineering Technology in Universities of Fujian Province, Fujian University of Technology, Fuzhou 350118, China
2. School of Civil Engineering, Fujian University of Technology, Fuzhou 350118, China
3. College of Civil Engineering, Tongji University, Shanghai 200092, China
Abstract
In this study, experimental research, a numerical simulation, and a theoretical analysis were performed on the bearing capacity of an aluminum alloy circular tube filled with a lightweight filler (ATLF). Bearing capacity tests were conducted for six ATLF columns and two aluminum alloy hollow tubes (AAHTs), and their local buckling failure modes and mechanical properties were obtained. A finite element model was developed using ABAQUS software (ABAQUS 2016, ABAQUS Inc., Palo Alto, CA, USA) for numerical calculations. Furthermore, a large-scale numerical analysis was performed to investigate the effect of structural parameters, such as the tube thickness, diameter, column length, and initial geometric imperfections, as well as the aluminum alloy’s properties and the lightweight filler’s properties, on the bearing capacity of the ATLF columns and AAHTs under axial compression. Based on the test and numerical analysis results, a formula for calculating the local buckling stress of AAHTs under axial compression is proposed. An improved coefficient of bearing capacity for the ATLF columns caused by the internal lightweight filler was obtained by fitting, and based on the results, a formula for computing the bearing capacity of ATLF columns under axial compression is proposed in this study.
Funder
Fujian-Taiwan Cooperative Institute of Civil Engineering Technology in Universities of Fujian Province
Subject
General Materials Science,Metals and Alloys