Impact response and energy absorption of functionally graded foam under temperature gradient environment

Liu, Hu; Ding, Shirun; Ng, Bing Feng

doi:10.1016/j.compositesb.2019.05.072

Cited by 30 publications

(9 citation statements)

References 56 publications

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“…The research of cellular media is growing rapidly and has been widely used in fields of packaging boxes, transportation, daily necessities, industrial manufacturing, and aerospace. There will be more applications in the future: The deformation mode and failure mechanism of cellular media under explosive loading and ultrahigh strain rates, gradient cellular material (gradient mode) structural design and performance optimization [ 18 , 57 , 71 , 154 , 155 , 156 , 157 , 158 , 159 ], and functional foam composite materials (e.g., doped metal particles, carbon nanotubes, and graphene) [ 21 , 160 , 161 , 162 , 163 ] are the keys to future research on cellular media. Expand the mechanical constitutive models of cellular media to suitable for various complex loads, and propose more constitutive models to understand the multifunctional performance of cellular media.…”

Section: Discussionmentioning

confidence: 99%

“…The deformation mode and failure mechanism of cellular media under explosive loading and ultrahigh strain rates, gradient cellular material (gradient mode) structural design and performance optimization [ 18 , 57 , 71 , 154 , 155 , 156 , 157 , 158 , 159 ], and functional foam composite materials (e.g., doped metal particles, carbon nanotubes, and graphene) [ 21 , 160 , 161 , 162 , 163 ] are the keys to future research on cellular media.…”

Section: Discussionmentioning

confidence: 99%

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A Review on Mechanical Models for Cellular Media: Investigation on Material Characterization and Numerical Simulation

et al. 2021

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Cellular media materials are used for automobiles, aircrafts, energy-efficient buildings, transportation, and other fields due to their light weight, designability, and good impact resistance. To devise a buffer structure reasonably and avoid resource and economic loss, it is necessary to completely comprehend the constitutive relationship of the buffer structure. This paper introduces the progress on research of the mechanical properties characterization, constitutive equations, and numerical simulation of porous structures. Currently, various methods can be used to construct cellular media mechanical models including simplified phenomenological constitutive models, homogenization algorithm models, single cell models, and multi-cell models. This paper reviews current key mechanical models for cellular media, attempting to track their evolution from their inception to their latest development. These models are categorized in terms of their mechanical modeling methods. This paper focuses on the importance of constitutive relationships and microstructure models in studying mechanical properties and optimizing structural design. The key issues concerning this topic and future directions for research are also discussed.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

A Review on Mechanical Models for Cellular Media: Investigation on Material Characterization and Numerical Simulation

et al. 2021

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“…The results obtained show that the energy absorption is linked to the profiles of graded cell distribution. The FE simulation can be also utilized to study the effect of temperature gradient on the properties of graded foam [ 81 ]. Moreover, the density-graded models can be investigated for the deformation pattern and energy absorption capacity of the resulting materials produced using a temperature gradient.…”

Section: Thermodynamic Aspects and Computer Modeling Of Polymer Fomentioning

confidence: 99%

“…The latest advances of energy absorption (or impact resistance) for functionally graded foams relate to density and temperature gradients during foam processing. For example, an increasing temperature gradient leads to the reducing of energy absorption capacity in functionally graded foam [ 80 , 81 ].…”

Section: Thermodynamic Aspects and Computer Modeling Of Polymer Fomentioning

confidence: 99%

Recent Progress in Processing Functionally Graded Polymer Foams

2020

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Polymer foams are an important class of engineering material that are finding diverse applications, including as structural parts in automotive industry, insulation in construction, core materials for sandwich composites, and cushioning in mattresses. The vast majority of these manufactured foams are homogeneous with respect to porosity and structural properties. In contrast, while cellular materials are also ubiquitous in nature, nature mostly fabricates heterogeneous foams, e.g., cellulosic plant stems like bamboo, or a human femur bone. Foams with such engineered porosity distribution (graded density structure) have useful property gradients and are referred to as functionally graded foams. Functionally graded polymer foams are one of the key emerging innovations in polymer foam technology. They allow enhancement in properties such as energy absorption, more efficient use of material, and better design for specific applications, such as helmets and tissue restorative scaffolds. Here, following an overview of key processing parameters for polymer foams, we explore recent developments in processing functionally graded polymer foams and their emerging structures and properties. Processes can be as simple as utilizing different surface materials from which the foam forms, to as complex as using microfluidics. We also highlight principal challenges that need addressing in future research, the key one being development of viable generic processes that allow (complete) control and tailoring of porosity distribution on an application-by-application basis.

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“…The main investigated parameters influencing the FGMs response were the effect of impact velocity, material parameters, and structural geometry. 27,28 For example, Petterson et al 29 evaluated the performances of armor structures composed of FGMs in terms of constituent's characterization effect, the procedure of elaboration and ballistic resistance. Huang and Chen 30 investigated the ballistic performance of a ceramic/ceramic (Al 2 O 3 /ZrO 2 ) functionally graded composite produced by powder metallurgy.…”

Section: Introductionmentioning

confidence: 99%

Numerical investigation of the dynamic behavior of a Ti/TiB functionally graded material using Split Hopkinson Pressure Bar test

Zemani¹,

May²,

Gilson

et al. 2022

Journal of Composite Materials

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This work focuses on the mechanical behavior, at high strain rates, of metal-ceramic functionally graded materials (FGMs) using a Split Hopkinson Pressure Bar (SHPB) technique. The validity and the accuracy of the SHPB test results for these composite materials have not been meticulously studied due to their complex mechanical response under dynamic loadings. In this paper, numerical simulations of SHPB tests were performed to determine the dynamic response of specific FGMs at various strain rates. The effects of the compositional gradient exponent and the striker velocity, as well as increasing/decreasing stiffness through the thickness of the functionally graded specimen, were investigated. The considered material is composed of Titanium mono-boride ceramic (TiB) and Titanium metal (Ti) phases; the volume fraction (Vc) of the ceramic constituent varies through-thickness following a power-law distribution. The locally effective material properties were evaluated using a homogenization method based on the self-consistent method (SCM). The elastoplastic behavior of the FGMs under dynamic loading is described using dynamic Tamura-Tomota-Ozawa model (DTTO). The numerical simulations indicated that the compositional gradient exponent and striker velocity have significant effects on the dynamic response of the FGMs. On the other hand, the increasing/decreasing stiffness has a minor effect due to the low thickness of the experimental functionally graded specimen. Finally, the effect of the high strain rates the multiple interface reflection/transmission of the stress wave is very considerable for the design and the optimization of FGMs behavior under dynamic loading.

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Impact response and energy absorption of functionally graded foam under temperature gradient environment

Cited by 30 publications

References 56 publications

A Review on Mechanical Models for Cellular Media: Investigation on Material Characterization and Numerical Simulation

A Review on Mechanical Models for Cellular Media: Investigation on Material Characterization and Numerical Simulation

Recent Progress in Processing Functionally Graded Polymer Foams

Numerical investigation of the dynamic behavior of a Ti/TiB functionally graded material using Split Hopkinson Pressure Bar test

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