RESEARCH ARTICLE


The Effect of Form Factors of Shock Absorption Mat’s Subunits on Attenuation of Force from Elderly’s Fall



Ariya Atthawuttikul1, *, Yada Chavalkul2
1 Multidisciplinary Design Research Program, Faculty of Architecture, King Mongkut’s Institute of Technology Ladkrabang, 10520 Bangkok, Thailand
2 Department of Industrial Design, Faculty of Architecture, King Mongkut’s Institute of Technology Ladkrabang, 10520 Bangkok, Thailand


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Creative Commons License
© 2018 Atthawuttikul and Chavalkul.

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: (https://creativecommons.org/licenses/by/4.0/legalcode). This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

* Address correspondence to this author at the Multidisciplinary Design Research Program, Faculty of Architecture, King Mongkut’s Institute of Technology Ladkrabang, 10520 Bangkok, Thailand; Tel: +66883072383; E-mails: atthawuttikulariya@gmail.com, appphd_yada@yahoo.com


Abstract

Background and Objective:

The purpose of this study was to investigate how differently various form factors of subunits of shock absorption mat attenuate force from the elderly’s fall.

Methods:

The study procedures were the following: (1) literature review: possible form factors affecting the shock absorbing capacity were analyzed and synthesized from the review; (2) synthesis of design criteria: criteria for force simulation were formulated based on the information from the review; and (3) simulation: simulation of force from elderly’s fall absorbed by such mats with the following control and independent variables that were analyzed and synthesized in the previous steps: (control variables): 1) impact force, 2) physical properties of the rubber material; (independent variables): 1) form of cross-section, 2) form of edges, 3) pattern of arrangement of subunits in the structural layer, and 4) dimensional proportion of subunits.

Results and Conclusion:

The simulation results show that the subunits with a circular-cross-section and hourglass-like-edge form factors were the best at attenuating impact force. The best pattern of subunit arrangement was a table arrangement. This study was a preliminary study to a design of subunits of shock absorption mat. The results would be used in the next, more comprehensive study.

Keywords: Form factors of subunits, Absorption mat, Elderly’s fall, Attenuation of force, Control variables, Independent variables.