As one of the media of the ground and feet, the design of footwear products has lately received great attention, and the cushioning performance of the sole has become a key factor for the comfort and sportiness of the foot. In this paper, a new type of middle sole sports shoes with an alternating gradient lattice structure was proposed. The dynamic response of the structure was analyzed by ABAQUS software, and the model was validated by modal analysis. The effects of different kinds of alternating lattice and uniform lattice sole models on vibration isolation were analyzed by using the vibration level difference as the evaluation index of vibration characteristics. The analysis results are as follows: (a) We found that the mean of the vibration level difference of the alternating gradient structure is higher than that of the uniform lattice structure, which confirms the feasibility of the alternating gradient arrangement and its excellent buffering performance. (b) Two kinds of vibration stage drop values of the 24-series alternating lattice structure model are analyzed, and “C-G-X″ structure has the highest vibration stage drop value. In addition, the comprehensive analysis of the alternating gradient lattice structure of the soles shows that the four types of structures have good cushioning performance, and the C-series structure in the frequency range of 0–140 Hz vibration level difference value is higher than other series. The results show that the evaluation index of vibration level difference based on mechanical vibration characteristics can accurately analyze the response of different structure soles to vibration, which also provides a method for the future design of vibration reduction and exploration of the biomechanics of footwear.

中文翻译：

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基于振动级差的交错格结构鞋底减振机理研究

作为地面和足部的媒体之一，鞋类产品的设计近来备受关注，鞋底的缓震性能成为足部舒适性和运动性的关键因素。本文提出了一种具有交替梯度格子结构的新型中底运动鞋。采用ABAQUS软件对结构进行动力响应分析，并通过模态分析对模型进行验证。以振动级差作为振动特性的评价指标，分析了不同类型的交替晶格和均匀晶格鞋底模型对隔振的影响。分析结果如下：(a) 我们发现交替梯度结构的振动能级差的平均值高于均匀晶格结构，这证实了交替梯度排列的可行性及其优异的缓冲性能。(b) 分析了24系列交替晶格结构模型的两种振动级降值，其中“CGX”结构的振动级降值最高。此外，综合分析鞋底交替梯度晶格结构，四种结构均具有良好的缓震性能，C系列结构在0-140Hz频率范围内的振动级差值高于其他结构。系列。