Developing a Structurally Modified Mechanical Lumped Model of the Human Tibia and Shin Guard Using Modal Analysis.

IF 3 2区医学 Q3 ENGINEERING, BIOMEDICAL

Annals of Biomedical Engineering Pub Date : 2024-12-22 DOI:10.1007/s10439-024-03668-w

Ehsan Moghaddam, Aref Afsharfard

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引用次数: 0

Abstract

Shins are one of the most vulnerable bones in human body. Shin guards are evaluated by their effectiveness in reducing the force applied to the bone. In this study, a structural modified mechanical lumped model of the shin guard was developed to provide maximum force distribution using physical parameter change modification technique and genetic algorithm. Modal analysis and finite element methods were used to determine the dynamic behavior of the system in the frequency range of 0-3000 Hz. In this research, FE results had an encouraging agreement with those in experimental test with a Mean Absolute Error (MAE) found as 34.94. The results proposed two design zones to select the stiffness of the shin guard. The stiffnesses K₁ and K₂ were selected between the values in the design zones. For situation, K₁ = 7.9 × 10⁵ N/m and K₂ = 6.3 × 10⁵ N/m, the distribution parameter was equal to 76% and f₁ = 1.87F, f₂ = 0.71F f₃ = 1.81F, meaning the force was effectively distributed.

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利用模态分析建立人体胫骨和胫护的结构改进机械集总模型。

胫骨是人体最脆弱的骨骼之一。胫骨护具是评估其有效性，以减少施加在骨头上的力。在本研究中，利用物理参数改变修改技术和遗传算法，建立了一个结构改进的胫骨护套力学集总模型，以提供最大的力分布。采用模态分析和有限元方法确定了系统在0 ~ 3000 Hz频率范围内的动态特性。本研究的有限元结果与实验结果一致，平均绝对误差（MAE）为34.94。结果提出了两个设计区域来选择护胫的刚度。刚度K1和K2在设计区值之间选取。当K1 = 7.9 × 105 N/m, K2 = 6.3 × 105 N/m时，分布参数为76%，f1 = 1.87F, f2 = 0.71F, f3 = 1.81F，说明力得到有效分布。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Annals of Biomedical Engineering 工程技术-工程：生物医学

CiteScore

7.50

自引率

15.80%

发文量

212

审稿时长

3 months

期刊介绍： Annals of Biomedical Engineering is an official journal of the Biomedical Engineering Society, publishing original articles in the major fields of bioengineering and biomedical engineering. The Annals is an interdisciplinary and international journal with the aim to highlight integrated approaches to the solutions of biological and biomedical problems.