The design of impact absorbing structures for additive manufacture

By J. Brennan-Craddock, D. Brackett, Ricky Wildman, Richard J. M. Hague. 2012

143 citations recorded by the source corpus.

Additive manufacturing (AM) is increasingly becoming a viable manufacturing process due to dramatic advantages that it facilitates in the area of design complexity. This paper investigates the potential of additively manufactured lattice structures for the application of tailored impact absorption specifically for conformal body protection. It explores lattice cell types based on foam microstructures and assesses their suitability for impact absorption. The effect of varying the cell strut edge design is also investigated. The implications of scaling these cells up for AM are discussed as well as the design issues regarding the handling of geometric complexity and the requirement for body conformity. The suitability of AM materials for this application is also discussed.

Subfields: Automotive Engineering, Computational Mechanics, Mechanical Engineering

View Paper: https://www.semanticscholar.org/paper/5e1f751603d8fc8851a7db4b81157805d4adba59

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In Automotive Engineering

In Computational Mechanics

In Mechanical Engineering

Citations in the corpus

An investigation into reinforced and functionally graded lattice structures (2017, background): “Latticed AM components designed in this way will be material-efficient and will offer superior functionality over those they replace; an optimised component can benefit from enhanced convective cooling thanks to the large surface area of an embedded lattice,(12,13) and the same lattice can absorb th”
A mechanical property evaluation of graded density Al-Si10-Mg lattice structures manufactured by selective laser melting (2016, background): “It is the long collapse plateau and its associated energy absorption that make lattice structures so compelling for use in impact absorbing applications[1, 4, 32, 33].”
Compressive failure modes and energy absorption in additively manufactured double gyroid lattices (2017, background): “where ki are the TPMS function periodicities, defined by i = 2 ni Li (with i = x, y, z), (2)”
Effective design and simulation of surface-based lattice structures featuring volume fraction and cell type grading (2018, background): “Other properties of these structures that have attracted attention are their energy absorption under compressive and dynamic loading [1-5], their facility to act as heat exchangers [6,7], their applications in orthopaedic implants [8] and their potential to reduce noise and vibration transmission [9”