Experimental and theoretical investigations on axial crushing of aluminum foam-filled grooved tube

2019 ◽  
Vol 226 ◽  
pp. 111229 ◽  
Author(s):  
Ru-yang Yao ◽  
Zhen-yu Zhao ◽  
Wen-qian Hao ◽  
Guan-sheng Yin ◽  
Bei Zhang
Keyword(s):  
Aluminum Foam ◽  
Axial Crushing ◽  
Theoretical Investigations ◽  
Foam Filled ◽  
Grooved Tube

Deformation and Energy Absorption of Aluminum Foam Filled Square Tubes

2012 ◽  
Vol 585 ◽  
pp. 34-38 ◽  
Author(s):  
Manmohan Dass Goel ◽  
Laxminarayan Krishnappa
Keyword(s):  
Energy Absorption ◽  
Aluminum Foam ◽  
Absorption Capacity ◽  
Stress Wave Propagation ◽  
Foam Core ◽  
Absorption Studies ◽  
Foam Filled ◽  
Experimental Trials ◽  
Deformation Modes ◽  
Tube Structure

Modeling and numerical simulation of aluminum foam filled square tubes under axial impact loading is presented. The foam-filled thin-walled square tubes are modeled as shell wherein, foam core is modeled by incorporating visco-elastic plastic foam model in Altair® RADIOSS. Deformation and energy absorption studies with single, bi-tubular, and multi-tube structure with and without aluminum foam core are carried out for assessing its effectiveness in crashworthiness under the identical conditions. It is observed that the multi-tube structure with foam core modify the deformation modes considerably and results in substantial increase in energy absorption capacity in comparison with the single and multi-tube without foam core. Moreover, the multi-tube foam filled structure shows complicated deformation modes due to the significant effect of stress wave propagation. This study will help automotive industry to design superior crashworthy components with multi-tube foam filled structures and will reduce the experimental trials by conducting the numerical simulations.

Study of the Torsional Behavior of Aluminum Foam-Filled Galvanized Steel Tubes after High Temperature

2018 ◽  
Vol 773 ◽  
pp. 238-243
Author(s):  
Zhan Guang Wang ◽  
Yang Wang
Keyword(s):  
High Temperature ◽  
Aluminum Foam ◽  
Load Capacity ◽  
Steel Tube ◽  
Galvanized Steel ◽  
Steel Tubes ◽  
Torsional Load ◽  
Torsional Behavior ◽  
Before And After ◽  
Foam Filled

Torsional test of aluminum foam-filled galvanized steel tube before and after high temperature is performed. The influence of temperature, porosity of aluminum foam and steel ratio on torsional behavior of aluminum foam galvanized steel tubes were analyzed. Experimental results showed that torsional curves of aluminum foam-filled galvanized steel tube before and after high temperature is similar, and can be divided into four stages: the elastic torsional stage, yield platform stage, descent stage and hardening stage; Its torsional load capacity decreases with increasing porosity of aluminum foam and increases at a higher steel content and slenderness ratio; after high temperature, torsional load capacity of galvanized steel tube decreased significantly. It was found that the strength reduction factor ratio under the elevated test temperature is higher than that recommended by British ECCS, Australian AS4100 and Chinese CECS 200-2006.

scholarly journals Study on the Composite Structure of Aluminum Foam-Filled Thin-Walled Metal Tube to Reduce the Charge Overload inside the Projectile during the Penetration Process

2020 ◽  
Vol 2020 ◽  
pp. 1-11
Author(s):  
Fudi Liang ◽  
Zengyou Liang ◽  
Dezhi Deng
Keyword(s):  
Reinforced Concrete ◽  
Stress Analysis ◽  
Composite Structure ◽  
High Speed ◽  
Aluminum Foam ◽  
Metal Tube ◽  
Penetration Process ◽  
Mathematical Expressions ◽  
Foam Filled ◽  
Thin Walled

When a projectile penetrates a target at high speed, the charge loaded inside the projectile usually bears a high overload, which will consequently severely affect its performance. In order to reduce the overload of the charge during the penetration process, the structure of the projectile was improved by adding two buffers at both ends of the charge. In this study, the mathematical expressions were first gained about the axial buffering force generated by the thin-walled metal tube, aluminum foam, and the composite structure of aluminum foam-filled thin-walled metal tube when they were impacted by the high-speed mass block through reasonable assumptions and stress analysis. During the experiment on the high-speed projectile penetrating reinforced concrete target, the acceleration curve of the charge and the projectile body were obtained. The results show that the maximum overload that the charge was subjected to during the launch and penetration process was significantly reduced, and the change in overload, which the charge was subjected to during the penetration process, was also less obvious.

Experimental, numerical and analytical studies on the aluminum foam filled energy absorption connectors under impact loading

2018 ◽  
Vol 131 ◽  
pp. 566-576 ◽  
Author(s):  
Yonghui Wang ◽  
Ximei Zhai ◽  
Jiachuan Yan ◽  
Wenjian Ying ◽  
Wei Wang
Keyword(s):  
Energy Absorption ◽  
Impact Loading ◽  
Aluminum Foam ◽  
Analytical Studies ◽  
Foam Filled

scholarly journals On the Lateral Compressive Behavior of Empty and Ex-Situ Aluminum Foam-Filled Tubes at High Temperature

Materials ◽  
2018 ◽  
Vol 11 (4) ◽  
pp. 554 ◽  
Author(s):  
Emanoil Linul ◽  
Nima Movahedi ◽  
Liviu Marsavina
Keyword(s):  
High Temperature ◽  
Aluminum Foam ◽  
Ex Situ ◽  
Compressive Behavior ◽  
Foam Filled

scholarly journals Energy Absorption of Aluminium Extrusions Filled with Cellular Materials Under Axial Crushing: Study of the Interaction Effect

2020 ◽  
Vol 10 (23) ◽  
pp. 8510
Author(s):  
Javier Paz ◽  
Miguel Costas ◽  
Jordi Delgado ◽  
Luis Romera ◽  
Jacobo Díaz
Keyword(s):  
Energy Dissipation ◽  
Cross Sections ◽  
Interaction Effect ◽  
Unit Volume ◽  
Variable Cross Section ◽  
Variable Cross ◽  
Polymeric Foam ◽  
Axial Crushing ◽  
Foam Filled ◽  
Thin Walled

This investigation focuses on the interaction effect during the quasi-static axial crushing of circular and square thin-walled aluminium extrusions filled with polymeric foam or cork. The increment in the absorbed energy due to interactions between materials was assessed using a validated numerical model calibrated with experimental material data. Simulations were run with variable cross-section dimensions, thickness, and foam density. The results were used to adjust the parameters of design formulas to predict the average crush forces of foam- and cork-filled thin-walled tubes. The analysis of the energy dissipation per unit volume revealed that the highest increments due to the interaction between materials appeared in the foam-filled square extrusions. Energy dissipation increased with higher density foams for both cross-sections due to a stronger constraint of the aluminium walls, and thus a reduction of the folding length. Thinner tube walls also delivered a higher improvement in the energy dissipation per unit volume than those with thicker walls. The contribution of friction was also quantified and investigated.

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