Abstract
Inspired by the performance of the ostrich in terms of loading and high-speed moving ability, the purpose of this study was to design a structure and material on the forefoot and heel of the middle soles of sports shoes based on the high cushioning quality of the ostrich toe pad by applying bionic engineering technology. The anatomical dissection method was used to analyze the ostrich foot characteristics. The structure and material of the bionic shock absorption midsole were designed according to the principles of bionic engineering and reverse engineering. F-Scan and numerical simulation were used to evaluate the bionic shock absorption midsole performance. The results showed that the bionic shock absorption midsole decreased the peak pressure (6.04–12.27%), peak force (8.62–16.03%), pressure–time integral (3.06–12.66%), and force–time integral (4.06–10.58%) during walking and brisk walking. In this study, the biomechanical effects to which the bionic shock absorption midsole structure was subjected during walking and brisk walking exercises were analyzed. The bionic midsole has excellent shock resistance. It is beneficial for the comfort of the foot during exercise and might reduce the risk of foot injuries during exercise.
Highlights
In the design and selection of sports shoes, the shock absorption properties have attracted increasing attention, and many shoe manufacturers employ shock absorption as a selling point [1]
There are three sections to this research: (1) the dissection method was used to analyze the anatomy of ostrich feet; (2) the structure and material of the bionic shock absorption midsole were designed according to the principles of bionic engineering and reverse engineering; and (3) physics tests and numerical simulations of the midsole performance were carried out
The results show that the highest plantar pressure was in the forefoot area under all conditions, and the peak plantar pressure was lower with the bionic midsole shoe
Summary
In the design and selection of sports shoes, the shock absorption properties have attracted increasing attention, and many shoe manufacturers employ shock absorption as a selling point [1]. The shoe sole comprises three components, which are the insole, midsole, and outsole. The material and structure of the midsole crucially affect the shock absorption properties of the shoes and are one of the most important bases of sports shoes [4,5]. Shoes are the first line of defense against the frequent impact of ground reaction force. Repetitious and large impact forces increase the risk of injury during exercise by generating extra vibrations in the body segments and subsequently causing head or joint damage [6]
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