scholarly journals Quasi-static Axial Crushing Behavior of Thin-walled Circular Aluminum Tubes with Functionally Graded Thickness

2016 ◽  
Vol 149 ◽  
pp. 559-565 ◽  
Author(s):  
Muhammed Emin Erdin ◽  
Cengiz Baykasoglu ◽  
Merve Tunay Cetin
Keyword(s):  
Functionally Graded ◽  
Axial Crushing ◽  
Aluminum Tubes ◽  
Thin Walled ◽  
Crushing Behavior ◽  
Graded Thickness

scholarly journals Proactive regulation of axial crushing behavior of thin-walled circular tube by gradient grooves

2016 ◽  
Vol 108-109 ◽  
pp. 49-60 ◽  
Author(s):  
Yanpeng Wei ◽  
Zhe Yang ◽  
He Yan ◽  
Yacong Guo ◽  
Xianqian Wu ◽  
...  
Keyword(s):  
Circular Tube ◽  
Axial Crushing ◽  
Thin Walled ◽  
Crushing Behavior

Multi-Objective Optimization Design of Functionally Graded Foam-Filled Graded-Thickness Tube Under Lateral Impact

2018 ◽  
Vol 16 (01) ◽  
pp. 1850088 ◽  
Author(s):  
Hanfeng Yin ◽  
Jinle Dai ◽  
Guilin Wen ◽  
Wanyi Tian ◽  
Qiankun Wu
Keyword(s):  
Energy Absorption ◽  
Wall Thickness ◽  
Functionally Graded ◽  
Design Parameters ◽  
Foam Density ◽  
Lateral Impact ◽  
Multi Objective Optimization ◽  
Foam Filled ◽  
Thin Walled ◽  
Graded Thickness

Foam-filled thin-walled structure has been widely used in vehicle engineering due to its highly efficient energy absorption capacity and lightweight. Unlike the existing foam-filled thin-walled structures, a new foam-filled structure, i.e., functionally graded foam-filled graded-thickness tube (FGFGT), which had graded foam density along the transverse direction and graded wall thickness along the longitudinal direction, was first studied in this paper. Two FGFGTs with different gradient distributions subjected to lateral impact were investigated using nonlinear finite element code through LS-DYNA. According to the parametric sensitivity analysis, we found that the two design parameters [Formula: see text] and [Formula: see text], which controlled the gradient distributions of the foam density and the tube wall thickness, significantly affected the crashworthiness of the two FGFGTs. In order to seek for the optimal design parameters, two FGFGTs were both optimized using a meta-model-based multi-objective optimization method which employed the Kriging modeling technique as well as the nondominated sorting genetic algorithm II. In the optimization process, we aimed to improve the specific energy absorption and to reduce the peak crushing force simultaneously. The optimization results showed that the FGFGT had even better crashworthiness than the traditional uniform foam-filled tube with the same weight. Moreover, the graded wall thickness and graded foam density can make the design of the FGFGT flexible. Due to these advantages, the FGFGT was an excellent energy absorber and had potential use as the side impact absorber in vehicle body.

scholarly journals Axial Crushing Behavior of Aluminum Square Tube with Origami Pattern

2016 ◽  
Vol 10 (2) ◽  
pp. 90 ◽  
Author(s):  
Prescilla Christy Albert ◽  
Amir Radzi Ab Ghani ◽  
Mohd Zaid Othman ◽  
Ahmad Mujahid Ahmad Zaidi
Keyword(s):  
Numerical Simulation ◽  
Energy Absorption ◽  
Testing Machine ◽  
Axial Crushing ◽  
Geometrical Shapes ◽  
Thin Walled Tube ◽  
Absorption Performance ◽  
Thin Walled ◽  
Crushing Behavior ◽  
Aluminum Alloy 6063

<span style="font-size: 10pt; font-family: 'Times New Roman','serif'; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;" lang="EN-US">The study of axial crushing behavior is important in designing crashworthy structures especially in automotive applications. The axial crushing of thin-walled tube has better energy absorption capability. Thus, introducing milled geometrical shapes on thin-walled tube may improve the energy absorption performance. The improvement of the crush response is determined through the reduction of the Initial Peak Force (IPF) and the increase of the Specific Energy Absorption (SEA). This was done by employing origami pattern milled on the surface of thin-walled square tube which was investigated experimentally and numerically. The material used for the tube was aluminum alloy 6063-T5. The simulation results were validated by experiments which were conducted using <span style="text-transform: uppercase;">Instron</span> 3382 Universal Testing Machine and <span style="text-transform: uppercase;">Instron Dynatup</span> 8250 Drop Hammer Machine. The numerical simulation then progressed by varying parameters such as dimensions and configurations of the origami pattern on the square tube. ABAQUS finite element (FE) software was used to conduct the numerical simulation. The result of employing the origami square pattern on square tube is expected to improve the crush response by lowering the IPF and increasing the SEA. The obtained results were then compared with the conventional square tube where the origami pattern on square tube enhanced the crush performance.</span>

Axial crushing behavior of circular aluminum tubes

2019 ◽  
Vol 61 (8) ◽  
pp. 749-754 ◽  
Author(s):  
Muhammet M. Yalçın ◽  
Osman H. Mete ◽  
Kenan Genel
Keyword(s):  
Axial Crushing ◽  
Aluminum Tubes ◽  
Crushing Behavior
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