Optimizing the Thickness of Functionally Graded Lattice Structures for High-Performance Energy Absorption: A Case Study Based on a Bicycle Helmet

被引：11

作者：

Decker, Thierry ^{[1
]}

Kedziora, Slawomir ^{[1
]}

机构：

[1] Univ Luxembourg, Fac Sci Technol & Med, L-1359 Luxembourg, Luxembourg

来源：

APPLIED SCIENCES-BASEL | 2024年 / 14卷 / 07期

基金：

英国科研创新办公室;

关键词：

functionally graded lattice structures; finite element analysis; helmet; optimization; additive manufacturing; TOPOLOGY OPTIMIZATION; DESIGN; FOAMS;

D O I：

10.3390/app14072788

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

This study explores the complete production chain of designing, optimizing, and Additive Manufacturing (AM) of a helmet incorporating a functionally graded lattice structure (FGLS). The potential of FGLSs in impact energy absorption tasks is investigated, along with the demonstration of a novel lattice optimization approach. Fifteen conformal, strut-based lattices are implemented in a realistic mountain bike helmet geometry and simulated in a standardized impact scenario in accordance with EN 1078. One model is subjected to the optimization procedure, produced, and physically tested. The study addresses limitations in prior research, emphasizing manufacturability in an AM context, lattice type exploration, the comparability of different unit cell types, and numerical modeling choices. The findings provide insights into the performance of lattice structures during impact, emphasizing practical engineering aspects such as design choices, optimization approaches, and manufacturing constraints.

引用

页数：28

共 88 条

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