scholarly journals Compressive Behavior and Energy Absorption Capability of Reinforced Closed-Cell Aluminum Alloy Foams

2018 ◽  
Vol 416 ◽  
pp. 012079 ◽  
Author(s):  
E Linul ◽  
L Marsavina ◽  
J Kovacik
Keyword(s):  
Aluminum Alloy ◽  
Energy Absorption ◽  
Compressive Behavior ◽  
Closed Cell

Simulation and modeling of different cell shapes for closed-cell LM-13 alloy foam for compressive behavior

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Karan Singh Verma ◽  
Sanjay Panthi ◽  
Dehi Pada Mondal
Keyword(s):  
Relative Density ◽  
Energy Absorption ◽  
Metal Foam ◽  
Absorption Capacity ◽  
Simulation Software ◽  
Fe Model ◽  
Compressive Behavior ◽  
Closed Cell ◽  
Compressive Performance ◽  
Cell Shapes

Abstract In the present investigation, a two-dimensional (2D) finite element (FE) model of closed-cell AlSi12Mg1Cu1 alloy foam (AAFs) of 0.35 relative density of different cell shapes, i.e., square, hexagonal, octagonal, and circular shaped cell established with the help of ABAQUS simulation software. Experimentation is also done for 0.35 relative density metal foam to report its compressive behavior. The plateau stress σ p l $\left(\right.{\sigma }_{pl}$ ) and energy absorption capacity (E ab) of AAFs (ρ rd = 0.35) properties are calculated from the plotted stress–strain graph and a significant effect of cell shape on compressive performance observed. By SEM characterization, it was noted that the experimental specimen also had near circular cells. The strength and energy absorption values are calculated for square-shape, circular-shaped, octagonal-shaped, and hexagonal-shaped cells in descending order from maximum to minimum. A convergence study is also carried out concerning the number of elements to obtain the most accurate FE results.

Compressive behavior of closed-cell aluminum alloy foams at medium strain rates

2011 ◽  
Vol 528 (6) ◽  
pp. 2326-2330 ◽  
Author(s):  
Zhihua Wang ◽  
Jianhu Shen ◽  
Guoxing Lu ◽  
Longmao Zhao
Keyword(s):  
Aluminum Alloy ◽  
Strain Rates ◽  
Compressive Behavior ◽  
Closed Cell

Effect of cell size on the energy absorption of closed-cell aluminum foam

2018 ◽  
Vol 60 (6) ◽  
pp. 583-590 ◽  
Author(s):  
Jinglin Xu ◽  
Jianqing Liu ◽  
Wenbin Gu ◽  
Zhenxiong Wang ◽  
Xin Liu ◽  
...  
Keyword(s):  
Cell Size ◽  
Energy Absorption ◽  
Aluminum Foam ◽  
Closed Cell

scholarly journals Effects of impactor shape on the deformation and energy absorption of closed cell aluminium foams under low velocity impact

2020 ◽  
Vol 191 ◽  
pp. 108599 ◽  
Author(s):  
M.A. Islam ◽  
M.A. Kader ◽  
P.J. Hazell ◽  
J.P. Escobedo ◽  
A.D. Brown ◽  
...  
Keyword(s):  
Energy Absorption ◽  
Low Velocity Impact ◽  
Low Velocity ◽  
Velocity Impact ◽  
Closed Cell

scholarly journals Dynamic crushing behavior of closed-cell aluminum foams based on different space-filling unit cells

2021 ◽  
Vol 21 (3) ◽  
Author(s):  
S. Talebi ◽  
R. Hedayati ◽  
M. Sadighi
Keyword(s):  
Surface Area ◽  
Dynamic Behavior ◽  
Energy Absorption ◽  
Peak Stress ◽  
Absorption Capacity ◽  
Unit Cell ◽  
Lattice Structures ◽  
Energy Absorption Capacity ◽  
Closed Cell ◽  
Unit Cells

AbstractClosed-cell metal foams are cellular solids that show unique properties such as high strength to weight ratio, high energy absorption capacity, and low thermal conductivity. Due to being computation and cost effective, modeling the behavior of closed-cell foams using regular unit cells has attracted a lot of attention in this regard. Recent developments in additive manufacturing techniques which have made the production of rationally designed porous structures feasible has also contributed to recent increasing interest in studying the mechanical behavior of regular lattice structures. In this study, five different topologies namely Kelvin, Weaire–Phelan, rhombicuboctahedron, octahedral, and truncated cube are considered for constructing lattice structures. The effects of foam density and impact velocity on the stress–strain curves, first peak stress, and energy absorption capacity are investigated. The results showed that unit cell topology has a very significant effect on the stiffness, first peak stress, failure mode, and energy absorption capacity. Among all the unit cell types, the Kelvin unit cell demonstrated the most similar behavior to experimental test results. The Weaire–Phelan unit cell, while showing promising results in low and medium densities, demonstrated unstable behavior at high impact velocity. The lattice structures with high fractions of vertical walls (truncated cube and rhombicuboctahedron) showed higher stiffness and first peak stress values as compared to lattice structures with high ratio of oblique walls (Weaire–Phelan and Kelvin). However, as for the energy absorption capacity, other factors were important. The lattice structures with high cell wall surface area had higher energy absorption capacities as compared to lattice structures with low surface area. The results of this study are not only beneficial in determining the proper unit cell type in numerical modeling of dynamic behavior of closed-cell foams, but they are also advantageous in studying the dynamic behavior of additively manufactured lattice structures with different topologies.

scholarly journals Static Mechanical Properties of Expanded Polypropylene Crushable Foam

Materials ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 249
Author(s):  
Przemysław Rumianek ◽  
Tomasz Dobosz ◽  
Radosław Nowak ◽  
Piotr Dziewit ◽  
Andrzej Aromiński
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Strain Rate ◽  
Energy Absorption ◽  
Experimental Tests ◽  
Absorption Capacity ◽  
Strain Rates ◽  
Foam Density ◽  
Energy Absorption Capacity ◽  
Closed Cell

Closed-cell expanded polypropylene (EPP) foam is commonly used in car bumpers for the purpose of absorbing energy impacts. Characterization of the foam’s mechanical properties at varying strain rates is essential for selecting the proper material used as a protective structure in dynamic loading application. The aim of the study was to investigate the influence of loading strain rate, material density, and microstructure on compressive strength and energy absorption capacity for closed-cell polymeric foams. We performed quasi-static compressive strength tests with strain rates in the range of 0.2 to 25 mm/s, using a hydraulically controlled material testing system (MTS) for different foam densities in the range 20 g/dm3 to 220 g/dm3. The above tests were carried out as numerical simulation using ABAQUS software. The verification of the properties was carried out on the basis of experimental tests and simulations performed using the finite element method. The method of modelling the structure of the tested sample has an impact on the stress values. Experimental tests were performed for various loads and at various initial temperatures of the tested sample. We found that increasing both the strain rate of loading and foam density raised the compressive strength and energy absorption capacity. Increasing the ambient and tested sample temperature caused a decrease in compressive strength and energy absorption capacity. For the same foam density, differences in foam microstructures were causing differences in strength and energy absorption capacity when testing at the same loading strain rate. To sum up, tuning the microstructure of foams could be used to acquire desired global materials properties. Precise material description extends the possibility of using EPP foams in various applications.

scholarly journals Development of a Closed Cell Aluminum Alloy Foam with Enhancement of the Compressive Strength

2001 ◽  
Vol 42 (10) ◽  
pp. 2118-2123 ◽  
Author(s):  
Tetsuji Miyoshi ◽  
Shigeta Hara ◽  
Toshiji Mukai ◽  
Kenji Higashi
Keyword(s):  
Compressive Strength ◽  
Aluminum Alloy ◽  
Closed Cell

scholarly journals Impact Properties of Aluminum Foam – Nanosilica Filled Basalt Fiber Reinforced Polymer Sandwich Composites

2018 ◽  
Vol 7 (3.11) ◽  
pp. 77
Author(s):  
Nurul Emi Nor Ain Mohammad ◽  
Aidah Jumahat ◽  
Mohamad Fashan Ghazali
Keyword(s):  
Energy Absorption ◽  
Basalt Fiber ◽  
Sandwich Composite ◽  
Sandwich Composites ◽  
Basalt Fibre ◽  
Reinforced Polymer ◽  
Closed Cell ◽  
The Face ◽  
Al Foam ◽  
Fibre Reinforced Polymer

This paper investigates the effect of nanosilica on impact and energy absorption properties of sandwich foam-fibre composites. The materials used in this study are closed-cell aluminum (Al) foam (as the core material) that is sandwiched in between nanomodified basalt fiber reinforced polymer (as the face-sheets). The face sheets were made of Basalt Fibre, nanosilica and epoxy polymer matrix. The sandwich composite structures are known to have the capability of resisting impact loads and good in absorbing energy. The objective of this paper is to determine the influence of closed-cell aluminum foam core and nanosilica filler on impact properties and fracture behavior of basalt fibre reinforced polymer (BFRP) sandwich composites when compared to the conventional glass fibre reinforced polymer (GFRP) sandwich composites. The drop impact tests were carried out to determine the energy absorbed, peak load and the force-deflection behaviour of the sandwich composite structure material. The results showed that the nanomodified BFRP-Al foam core sandwich panel exhibited promising energy absorption properties, corresponding to the highest specific energy absorption value observed. Also, the result indicates that the Aluminium Foam BFRP sandwich composite exhibited higher energy absorption when compared to the Aluminium foam GFRP sandwich composite.  

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