The Bionic High-Cushioning Midsole of Shoes Inspired by Functional Characteristics of Ostrich Foot

The sole is a key component of the interaction between foot and ground in daily activities, and its cushioning performance plays a crucial role in protecting the joints of lower limbs from impact injuries. Based on the excellent cushioning performance of the ostrich foot and inspired by the structur...

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Main Authors: Rui Zhang, Liangliang Zhao, Qingrui Kong, Guolong Yu, Haibin Yu, Jing Li, Wei-Hsun Tai
Format: Article
Language:English
Published: MDPI AG 2022-12-01
Series:Bioengineering
Subjects:
Online Access:https://www.mdpi.com/2306-5354/10/1/1
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author Rui Zhang
Liangliang Zhao
Qingrui Kong
Guolong Yu
Haibin Yu
Jing Li
Wei-Hsun Tai
author_facet Rui Zhang
Liangliang Zhao
Qingrui Kong
Guolong Yu
Haibin Yu
Jing Li
Wei-Hsun Tai
author_sort Rui Zhang
collection DOAJ
description The sole is a key component of the interaction between foot and ground in daily activities, and its cushioning performance plays a crucial role in protecting the joints of lower limbs from impact injuries. Based on the excellent cushioning performance of the ostrich foot and inspired by the structure and material assembly features of the ostrich foot’s metatarsophalangeal skeletal–tendon and the ostrich toe pad–fascia, a functional bionic cushioning unit for the midsole (including the forefoot and heel) area of athletic shoes was designed using engineering bionic technology. The bionic cushioning unit was then processed based on the bionic design model, and the shoe soles were tested with six impact energies ranging from 3.3 J to 11.6 J for a drop hammer impact and compared with the conventional control sole of the same size. The results indicated that the bionic forefoot area absorbed 9.83–34.95% more impact and 10.65–43.84% more energy than the conventional control forefoot area, while the bionic heel area absorbed 26.34–44.29% more impact and 28.1–51.29% more energy than the conventional control heel area when the controlled impact energy varied from 3.3 J to 11.6 J. The cushioning performance of the bionic cushioning sole was generally better than that of the conventional control sole, and the cushioning and energy-absorption performances of the heel bionic cushioning unit were better than those of the forefoot bionic cushioning unit. This study provides innovative reference and research ideas for the design and development of sports shoes with good cushioning performance.
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spelling doaj.art-c6913497ffa44c6aab3c846bda0650b12023-09-03T07:10:21ZengMDPI AGBioengineering2306-53542022-12-01101110.3390/bioengineering10010001The Bionic High-Cushioning Midsole of Shoes Inspired by Functional Characteristics of Ostrich FootRui Zhang0Liangliang Zhao1Qingrui Kong2Guolong Yu3Haibin Yu4Jing Li5Wei-Hsun Tai6Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130022, ChinaKey Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130022, ChinaKey Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130022, ChinaKey Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130022, ChinaSchool of Physical Education, Quanzhou Normal University, Quanzhou 362000, ChinaSchool of Physical Education, Quanzhou Normal University, Quanzhou 362000, ChinaSchool of Physical Education, Quanzhou Normal University, Quanzhou 362000, ChinaThe sole is a key component of the interaction between foot and ground in daily activities, and its cushioning performance plays a crucial role in protecting the joints of lower limbs from impact injuries. Based on the excellent cushioning performance of the ostrich foot and inspired by the structure and material assembly features of the ostrich foot’s metatarsophalangeal skeletal–tendon and the ostrich toe pad–fascia, a functional bionic cushioning unit for the midsole (including the forefoot and heel) area of athletic shoes was designed using engineering bionic technology. The bionic cushioning unit was then processed based on the bionic design model, and the shoe soles were tested with six impact energies ranging from 3.3 J to 11.6 J for a drop hammer impact and compared with the conventional control sole of the same size. The results indicated that the bionic forefoot area absorbed 9.83–34.95% more impact and 10.65–43.84% more energy than the conventional control forefoot area, while the bionic heel area absorbed 26.34–44.29% more impact and 28.1–51.29% more energy than the conventional control heel area when the controlled impact energy varied from 3.3 J to 11.6 J. The cushioning performance of the bionic cushioning sole was generally better than that of the conventional control sole, and the cushioning and energy-absorption performances of the heel bionic cushioning unit were better than those of the forefoot bionic cushioning unit. This study provides innovative reference and research ideas for the design and development of sports shoes with good cushioning performance.https://www.mdpi.com/2306-5354/10/1/1ostrich toe padmetatarsophalangeal jointhigh cushioningmidsole of solesbionic design
spellingShingle Rui Zhang
Liangliang Zhao
Qingrui Kong
Guolong Yu
Haibin Yu
Jing Li
Wei-Hsun Tai
The Bionic High-Cushioning Midsole of Shoes Inspired by Functional Characteristics of Ostrich Foot
Bioengineering
ostrich toe pad
metatarsophalangeal joint
high cushioning
midsole of soles
bionic design
title The Bionic High-Cushioning Midsole of Shoes Inspired by Functional Characteristics of Ostrich Foot
title_full The Bionic High-Cushioning Midsole of Shoes Inspired by Functional Characteristics of Ostrich Foot
title_fullStr The Bionic High-Cushioning Midsole of Shoes Inspired by Functional Characteristics of Ostrich Foot
title_full_unstemmed The Bionic High-Cushioning Midsole of Shoes Inspired by Functional Characteristics of Ostrich Foot
title_short The Bionic High-Cushioning Midsole of Shoes Inspired by Functional Characteristics of Ostrich Foot
title_sort bionic high cushioning midsole of shoes inspired by functional characteristics of ostrich foot
topic ostrich toe pad
metatarsophalangeal joint
high cushioning
midsole of soles
bionic design
url https://www.mdpi.com/2306-5354/10/1/1
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