A 3D hybrid auxetic lattice/foam for energy dissipation and posture comfort

Fieldhouse, R; Worman, H; Phillips, J; Pugsley, O; Murphy, G; Miller, J; Gu, H; Walters, P; Scarpa, F; Farrow, I; Shterenilikht, A; Jones, R; Davies-Smith, A

Abstract

The work describes the development of an hybrid three-dimensional composite made of a 3D auxetic lattice configuration and a layer of auxetic open cell PU foam for applications, ranging from general energy absorption/packaging to posture comfort and control for patients affected by multiple sclerosis (MS). The 3D architected lattices have been produced using 3D printing techniques, while the auxetic foam is made following a thermoforming process with controllable pressure distributions. We show here the process of design, modelling, manufacturing and testing (compression/hysteretic cycling/3P bending) of the hybrid auxetic composites, and aspects of the design involving the potential use of these structures for supports in mobility devices.

Citation

Fieldhouse, R., Worman, H., Phillips, J., Pugsley, O., Murphy, G., Miller, J., …Davies-Smith, A. (2018, September). A 3D hybrid auxetic lattice/foam for energy dissipation and posture comfort. Paper presented at 9th International Conference and 14th International Workshop on Auxetics and Related Systems with “Negative” Characteristics, Sheffield, UK

• Presentation Conference Type: Conference Paper (unpublished)
• Conference Name: 9th International Conference and 14th International Workshop on Auxetics and Related Systems with “Negative” Characteristics
• Conference Location: Sheffield, UK
• Start Date: Sep 10, 2018
• End Date: Sep 13, 2018
• Acceptance Date: Sep 8, 2018
• Publicly Available Date: Jun 7, 2019
• Peer Reviewed: Peer Reviewed
• Keywords: auxetics, medical, hybrid, posture, comfort, multiple sclerosis, 3D
• Public URL: https://uwe-repository.worktribe.com/output/860794
• Publisher URL: https://blogs.shu.ac.uk/auxetics2018/?doing_wp_cron=1540392544.0684509277343750000000
• Additional Information: Title of Conference or Conference Proceedings : 9th International Conference and 14th International Workshop on Auxetics and Related Systems with “Negative” Characteristics