Experimental and numerical study on energy absorption performance of CFRP/aluminum hybrid square tubes under axial loading

2020 ◽  
Vol 155 ◽  
pp. 106948
Author(s):  
JunYuan Zhang ◽  
Bingquan Lu ◽  
Danfeng Zheng ◽  
Zhongyu Li
Keyword(s):  
Energy Absorption ◽  
Numerical Study ◽  
Axial Loading ◽  
Absorption Performance

Crushing behavior and energy absorption performance of a bio-inspired metallic structure: Experimental and numerical study

2018 ◽  
Vol 131 ◽  
pp. 547-555 ◽  
Author(s):  
Alper Tasdemirci ◽  
Emine Fulya Akbulut ◽  
Erkan Guzel ◽  
Firat Tuzgel ◽  
Atacan Yucesoy ◽  
...  
Keyword(s):  
Energy Absorption ◽  
Numerical Study ◽  
Metallic Structure ◽  
Absorption Performance ◽  
Crushing Behavior

Study on energy absorption performance of variable thickness CFRP/aluminum hybrid square tubes under axial loading

2021 ◽  
pp. 114469
Author(s):  
Bingquan Lu ◽  
Chuanliang Shen ◽  
Junyuan Zhang ◽  
Danfeng Zheng ◽  
Tianqi Zhang
Keyword(s):  
Energy Absorption ◽  
Variable Thickness ◽  
Axial Loading ◽  
Absorption Performance

Energy absorption performance of hexagonal multi-cell tube with hierarchy under axial loading

2021 ◽  
Vol 169 ◽  
pp. 108392
Author(s):  
Ruixian Qin ◽  
Xi Wang ◽  
Feng Gao ◽  
Bingzhi Chen
Keyword(s):  
Energy Absorption ◽  
Axial Loading ◽  
Absorption Performance

Numerical Study on Axial Crushing of Auxetic Foam-Filled Square Tube

2020 ◽  
Vol 975 ◽  
pp. 159-164
Author(s):  
Saeid Mohsenizadeh ◽  
Zaini Ahmad ◽  
Amran Alias
Keyword(s):  
Energy Absorption ◽  
Poisson’S Ratio ◽  
Numerical Study ◽  
Progressive Collapse ◽  
Poisson's Ratio ◽  
Foam Core ◽  
Negative Poisson’S Ratio ◽  
Negative Poisson's Ratio ◽  
Absorption Performance ◽  
Foam Filled

Filling the thin-walled tubes with a foam core is a typical method to enhance the energy absorption performance and stabilize their crushing responses under impact loading. Recently, auxetic foam material with negative Poisson’s ratio has gained remarkable popularity as an effective candidate to enhance the energy absorption capability of structures. In this paper, polyurethane auxetic foam is suggested as a foam core with the negative Poisson’s ratio of-0.31. Numerical simulation was performed to quantify the crush characteristics of auxetic foam-filled square aluminum tubes for variations in initial width of tube under quasi-static axial loading using the nonlinear finite element (FE) code LS-Dyna. Based on the numerical results, the influence of tube width was quantified in terms of energy absorption (EA), specific energy absorption (SEA), initial peak force (Pmax) and crush force efficiency (CFE). It is found that the progressive collapse and deformation modes of auxetic foam-filled tube (AFFT) is pronouncedly affected by varying the tube width. Furthermore, the SEA of AFFT is remarkably sensitive to the tube width variations, yet show low sensitivity to the EA of AFFT. The present study provides new design information on the crush response and energy absorption performance of auxetic foam-filled square tube with varying tube width.

Collapse analysis of Al 6061 alloy conical shells with circular cutouts under axial loading: experiment and simulation

2022 ◽  
pp. 146442072110546
Author(s):  
Hamid Hasanzadeh ◽  
Ehsan Mohtarami ◽  
Mohammad Ebadati ◽  
Kazem Reza Kashyzadeh ◽  
Mostafa Omidi Bidgoli
Keyword(s):  
Energy Absorption ◽  
Failure Modes ◽  
Numerical Study ◽  
Axial Loading ◽  
Maximum Force ◽  
Asymmetric Mode ◽  
Buckling Modes ◽  
Conical Shells ◽  
Crushing Behavior ◽  
Force Displacement

The current research is conducted to investigate the experimental and numerical study of crushing behavior and buckling modes of thin-walled truncated conical shells with or without cutouts and discontinuities under axial loading. In this regard, Instron 8802 servohydraulic machine is used to perform the experiments. Additionally, the buckling modes, derived from the axial collapse phenomenon, are simulated with Finite Element (FE) software. The force-displacement diagrams extracted numerically are compared with experimental results. Various factors, including maximum force, energy absorption, specific energy, and failure modes of each case, are also discussed. The results indicate that the increasing cutout cause a decrease in the maximum force and energy absorption. Moreover, with cutouts reduction, the failure modes of the samples changed from the diamond asymmetric mode and single-lobe mode to multi-lobes, and with removing cutouts, the failure mode is observed to be completely symmetric.

Energy absorption of thin-walled circular tubes with gradient thickness under oblique loads

2020 ◽  
Vol 234 (16) ◽  
pp. 3207-3220 ◽  
Author(s):  
Peng Wang ◽  
Yuan Zhang ◽  
Fan Yang ◽  
Kun Tian ◽  
Qi Zhao ◽  
...  
Keyword(s):  
Finite Element ◽  
Energy Absorption ◽  
Loading Condition ◽  
Axial Loading ◽  
Deformation Mode ◽  
Circular Tubes ◽  
Oblique Loading ◽  
Nonuniform Thickness ◽  
Absorption Performance ◽  
Thin Walled

Introducing nonuniform thickness has shown promising potential in enhancing the energy absorption of thin-walled tubes. However, existing studies were focused on the axial loading, with little attention being paid to the oblique loading condition. In this paper, the energy absorption performance and the deformation modes of the circular tubes with gradient thicknesses under oblique loads are investigated. Finite element simulations and experiments were carried out for both uniform-thick and gradient-thick tubes under the axial and oblique loads, and satisfactory agreement was achieved betweent the numerical and the experimental results. The validated finite element models were used to investigate the effects of the thickness gradient and loading angle on the deforamtion modes and the energy absorption. The results highlight the advantages of the gradient-thickness tubes in improving the energy absorption performance under the oblique loading condition, especially at a larger loading angle. A novel progressive bending deformation mode was observed for the tube with large thickness gradient at a loading angle larger than 15°, which is beneficial for the energy absorption performance.

Crush Response of Polyurethane Foam-Filled Aluminium Tube Subjected to Axial Loading

2014 ◽  
Vol 875-877 ◽  
pp. 534-541 ◽  
Author(s):  
Chawalit Thinvongpituk ◽  
Nirut Onsalung
Keyword(s):  
Energy Absorption ◽  
Polyurethane Foam ◽  
Testing Machine ◽  
Axial Loading ◽  
Asymmetric Mode ◽  
Pu Foam ◽  
Universal Testing ◽  
Collapse Mode ◽  
Empty Tube ◽  
Foam Filled

In this paper, the experimental investigation of polyurethane (PU) foam-filled into circular aluminum tubes subjected to axial crushing was presented. The purpose of this study is to improve the energy absorption of aluminium tube under axial quasi-static load. The aluminium tube was made from the AA6063-T5 aluminium alloy tubes. Each tube was filled with polyurethane foam. The density of foam was varied from 100, 150 and 200 kg/mP3P including with empty tube. The range of diameter/thickness (D/t) ratio of tube was varied from 15-55. The specimen were tested by quasi-static axial load with crush speed of 50 mm/min using the 2,000 kN universal testing machine. The load-displacement curves while testing were recorded for calculation. The mode of collapse of each specimen was analyzed concerning on foam density and the influence of D/t ratio. The results revealed that the tube with foam-filled provided significantly increment of the energy absorption than that of the empty tube. While the density of foam and D/t ratios increase, the tendency of collapse mode is transformed from asymmetric mode to concertina mode.

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