The Dynamic Impact Response of 3D-Printed Polymeric Sandwich Structures with Lattice Cores: Numerical and Experimental Investigation

This paper proposes a dynamic drop weight impact simulation to predict the impact response of 3D printed polymeric sandwich structures using an explicit finite element (FE) approach. The lattice cores of sandwich structures were based on two unit cells, a body-centred cubic (BCC) and an edge-centred...

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Autores principales:	Shu-Yu Jhou, Ching-Chi Hsu, Jui-Chia Yeh
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	sandwich structure lattice finite element dynamic impact shock absorption collapse Organic chemistry QD241-441
Acceso en línea:	https://doaj.org/article/24163508331748f29f42988e7f730e55
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spelling	oai:doaj.org-article:24163508331748f29f42988e7f730e552021-11-25T18:49:32ZThe Dynamic Impact Response of 3D-Printed Polymeric Sandwich Structures with Lattice Cores: Numerical and Experimental Investigation10.3390/polym132240322073-4360https://doaj.org/article/24163508331748f29f42988e7f730e552021-11-01T00:00:00Zhttps://www.mdpi.com/2073-4360/13/22/4032https://doaj.org/toc/2073-4360This paper proposes a dynamic drop weight impact simulation to predict the impact response of 3D printed polymeric sandwich structures using an explicit finite element (FE) approach. The lattice cores of sandwich structures were based on two unit cells, a body-centred cubic (BCC) and an edge-centred cubic (ECC). The deformation and the peak acceleration, referred to as the g-max score, were calculated to quantify their shock absorption characteristic. For the FE results verification, a falling mass impact test was conducted. The FE results were in good agreement with experimental measurements. The results suggested that the strut diameter, strut length, number and orientation, and the apparent material stiffness of the lattice cores had a significant effect on their deformation behavior and shock absorption capability. In addition, the BCC lattice core with a thinner strut diameter and low structural height might lead to poor shock absorption capability caused by structure collapse and border effect, which could be improved by increasing its apparent material stiffness. This dynamic drop impact simulation process could be applied across numerous industries such as footwear, sporting goods, personal protective equipment, packaging, or biomechanical implants.Shu-Yu JhouChing-Chi HsuJui-Chia YehMDPI AGarticlesandwich structurelatticefinite elementdynamic impactshock absorptioncollapseOrganic chemistryQD241-441ENPolymers, Vol 13, Iss 4032, p 4032 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	sandwich structure lattice finite element dynamic impact shock absorption collapse Organic chemistry QD241-441
spellingShingle	sandwich structure lattice finite element dynamic impact shock absorption collapse Organic chemistry QD241-441 Shu-Yu Jhou Ching-Chi Hsu Jui-Chia Yeh The Dynamic Impact Response of 3D-Printed Polymeric Sandwich Structures with Lattice Cores: Numerical and Experimental Investigation
description	This paper proposes a dynamic drop weight impact simulation to predict the impact response of 3D printed polymeric sandwich structures using an explicit finite element (FE) approach. The lattice cores of sandwich structures were based on two unit cells, a body-centred cubic (BCC) and an edge-centred cubic (ECC). The deformation and the peak acceleration, referred to as the g-max score, were calculated to quantify their shock absorption characteristic. For the FE results verification, a falling mass impact test was conducted. The FE results were in good agreement with experimental measurements. The results suggested that the strut diameter, strut length, number and orientation, and the apparent material stiffness of the lattice cores had a significant effect on their deformation behavior and shock absorption capability. In addition, the BCC lattice core with a thinner strut diameter and low structural height might lead to poor shock absorption capability caused by structure collapse and border effect, which could be improved by increasing its apparent material stiffness. This dynamic drop impact simulation process could be applied across numerous industries such as footwear, sporting goods, personal protective equipment, packaging, or biomechanical implants.
format	article
author	Shu-Yu Jhou Ching-Chi Hsu Jui-Chia Yeh
author_facet	Shu-Yu Jhou Ching-Chi Hsu Jui-Chia Yeh
author_sort	Shu-Yu Jhou
title	The Dynamic Impact Response of 3D-Printed Polymeric Sandwich Structures with Lattice Cores: Numerical and Experimental Investigation
title_short	The Dynamic Impact Response of 3D-Printed Polymeric Sandwich Structures with Lattice Cores: Numerical and Experimental Investigation
title_full	The Dynamic Impact Response of 3D-Printed Polymeric Sandwich Structures with Lattice Cores: Numerical and Experimental Investigation
title_fullStr	The Dynamic Impact Response of 3D-Printed Polymeric Sandwich Structures with Lattice Cores: Numerical and Experimental Investigation
title_full_unstemmed	The Dynamic Impact Response of 3D-Printed Polymeric Sandwich Structures with Lattice Cores: Numerical and Experimental Investigation
title_sort	dynamic impact response of 3d-printed polymeric sandwich structures with lattice cores: numerical and experimental investigation
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/24163508331748f29f42988e7f730e55
work_keys_str_mv	AT shuyujhou thedynamicimpactresponseof3dprintedpolymericsandwichstructureswithlatticecoresnumericalandexperimentalinvestigation AT chingchihsu thedynamicimpactresponseof3dprintedpolymericsandwichstructureswithlatticecoresnumericalandexperimentalinvestigation AT juichiayeh thedynamicimpactresponseof3dprintedpolymericsandwichstructureswithlatticecoresnumericalandexperimentalinvestigation AT shuyujhou dynamicimpactresponseof3dprintedpolymericsandwichstructureswithlatticecoresnumericalandexperimentalinvestigation AT chingchihsu dynamicimpactresponseof3dprintedpolymericsandwichstructureswithlatticecoresnumericalandexperimentalinvestigation AT juichiayeh dynamicimpactresponseof3dprintedpolymericsandwichstructureswithlatticecoresnumericalandexperimentalinvestigation
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The Dynamic Impact Response of 3D-Printed Polymeric Sandwich Structures with Lattice Cores: Numerical and Experimental Investigation

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