Concept development for innovative functionally graded lattice structures to absorb desired energy and impact

doi:10.1007/s40436-024-00542-9

Advances in Manufacturing ›› 2025, Vol. 13 ›› Issue (4): 799-812.doi: 10.1007/s40436-024-00542-9

• • 上一篇

Concept development for innovative functionally graded lattice structures to absorb desired energy and impact

Mohammad Reza Vaziri Sereshk¹, Eric J. Faierson²

1. Department of Engineering, Central Connecticut State University, New Britain, CT, 06050, USA;
2. Iowa State University, Ames, IA, 50011, USA

收稿日期:2023-12-22 修回日期:2024-03-31 发布日期:2025-12-06
通讯作者: Mohammad Reza Vaziri Sereshk Email:E-mail:mrvaziri2000@yahoo.com E-mail:mrvaziri2000@yahoo.com
作者简介:Mohammad Reza Vaziri Sereshk is an assistant professor at Department of Engineering of Central Connecticut State University. His research field includes different aspect of manufacturing including additive and subtractive.
Eric J. Faierson received his PhD in Material Sciences from Virginia Tech. He is currently working as research assistant professor at Iowa State University. His filed of research is advanced materials and manufacturing.
基金资助:
The authors appreciate the funding received from Army Research Lab Cooperative Agreement (Grant No. W911NF-18-2-0067) for enabling this work. Authors appreciate Western Illinois University for providing the lab equipment for some of the tests in this study.

Concept development for innovative functionally graded lattice structures to absorb desired energy and impact

Mohammad Reza Vaziri Sereshk¹, Eric J. Faierson²

1. Department of Engineering, Central Connecticut State University, New Britain, CT, 06050, USA;
2. Iowa State University, Ames, IA, 50011, USA

Received:2023-12-22 Revised:2024-03-31 Published:2025-12-06
Contact: Mohammad Reza Vaziri Sereshk Email:E-mail:mrvaziri2000@yahoo.com E-mail:mrvaziri2000@yahoo.com
Supported by:
The authors appreciate the funding received from Army Research Lab Cooperative Agreement (Grant No. W911NF-18-2-0067) for enabling this work. Authors appreciate Western Illinois University for providing the lab equipment for some of the tests in this study.

摘要/Abstract

摘要： Densification and plateau behavior of lattices can be manipulated by selectively grading the cells. Metallic lattices are the conventional choice for energy absorption, while the generated impact has not been the subject of interest. However, this is the crucial requirement for protective applications like mine-blast absorber for armor vehicles. Different gradient approaches have been examined in this study to find the method which not only controls the absorbed energy, but also keeps the impact level below the identified threshold. This includes available density gradients as well as an innovative gradient geometry for the structure. The concept of how each gradient approach influences the plateau behavior was discussed. A novel approach has been presented which enables tracking the impact magnitude during densification. Although, series density-gradient is a common approach to improve energy absorption in industry, the result of this study demonstrates that crushing the denser region of lattice may generate significantly larger impact. Instead, arranging density gradient cells parallelly can absorb higher energy, while the increase in impact is not significant. An innovative design is presented for lattice structure with gradient geometry. It starts absorbing energy at very low impact and ends with significantly higher absorbed energy at full compaction. To expand the domain of application and effectiveness, new gradient approach was proposed by combining geometry and density grading. It was demonstrated that this highly efficient and flexible design configuration could reduce the activation impact by 94% with descending arrangement and double the absorbed energy by ascending arrangement. This was achieved while the impact magnitude was kept at a reasonable level. In addition, design parameters can be adjusted for desired level of energy and impact for particular application.

The full text can be downloaded at https://doi.org/10.1007/s40436-024-00542-9

关键词: Gradient lattice, Energy absorption, Impact absorption, Energy-impact absorption diagram, Plateau behavior

Abstract: Densification and plateau behavior of lattices can be manipulated by selectively grading the cells. Metallic lattices are the conventional choice for energy absorption, while the generated impact has not been the subject of interest. However, this is the crucial requirement for protective applications like mine-blast absorber for armor vehicles. Different gradient approaches have been examined in this study to find the method which not only controls the absorbed energy, but also keeps the impact level below the identified threshold. This includes available density gradients as well as an innovative gradient geometry for the structure. The concept of how each gradient approach influences the plateau behavior was discussed. A novel approach has been presented which enables tracking the impact magnitude during densification. Although, series density-gradient is a common approach to improve energy absorption in industry, the result of this study demonstrates that crushing the denser region of lattice may generate significantly larger impact. Instead, arranging density gradient cells parallelly can absorb higher energy, while the increase in impact is not significant. An innovative design is presented for lattice structure with gradient geometry. It starts absorbing energy at very low impact and ends with significantly higher absorbed energy at full compaction. To expand the domain of application and effectiveness, new gradient approach was proposed by combining geometry and density grading. It was demonstrated that this highly efficient and flexible design configuration could reduce the activation impact by 94% with descending arrangement and double the absorbed energy by ascending arrangement. This was achieved while the impact magnitude was kept at a reasonable level. In addition, design parameters can be adjusted for desired level of energy and impact for particular application.

The full text can be downloaded at https://doi.org/10.1007/s40436-024-00542-9

Key words: Gradient lattice, Energy absorption, Impact absorption, Energy-impact absorption diagram, Plateau behavior

Mohammad Reza Vaziri Sereshk, Eric J. Faierson. Concept development for innovative functionally graded lattice structures to absorb desired energy and impact[J]. Advances in Manufacturing, 2025, 13(4): 799-812.

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Concept development for innovative functionally graded lattice structures to absorb desired energy and impact

Concept development for innovative functionally graded lattice structures to absorb desired energy and impact

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