[1]张敏,张露,杨梅,等.基于数字手臂的冲击力扩散机制建模与分析[J].中国医学物理学杂志,2023,40(2):226-231.[doi:1005-202X（2023）02-0226-06]
　ZHANG Min,ZHANG Lu,YANG Mei,et al.Modeling and analysis of the diffusion mechanism of impact force on digital forearm[J].Chinese Journal of Medical Physics,2023,40(2):226-231.[doi:1005-202X（2023）02-0226-06]
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基于数字手臂的冲击力扩散机制建模与分析()
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《中国医学物理学杂志》[ISSN:1005-202X/CN:44-1351/R]

卷:
40卷
期数:
2023年第2期
页码:
226-231
栏目:
生物材料与力学
出版日期:
2023-03-03

文章信息/Info

Title:
Modeling and analysis of the diffusion mechanism of impact force on digital forearm
文章编号:
1005-202X（2023）02-0226-06
作者:
张敏1; 张露1; 杨梅1; 张英1; 杨济宁1; 2; 3; 秦雨萍1; 2; 3
1.内江师范学院人工智能学院， 四川 内江 641100； 2.内江师范学院智慧医疗工程应用实验室， 四川 内江 641100； 3.内江师范学院内师-容天智慧医疗工程应用联合实验室， 四川 内江 641100
Author(s):
ZHANG Min1;  ZHANG Lu1;  YANG Mei1;  ZHANG Ying1;  YANG Jining1;  2;  3;  QIN Yuping1;  2;  3
1. School of Artificial Intelligence, Neijiang Normal University, Neijiang 641100, China 2. Smart Medical Engineering Applications Laboratory, Neijiang Normal University, Neijiang 641100, China 3. NJNU-OMNISKY Smart Medical Engineering Applications Joint Laboratory, Neijiang Normal University, Neijiang 641100, China
关键词:
人体前臂; 应力损伤; 有限元模型; 粘弹性组织; 刚性组织
Keywords:
Keywords: human forearm stress damage finite element model viscoelastic tissue rigid tissue
分类号:
R318；Q42 Q64
DOI:
1005-202X（2023）02-0226-06
文献标志码:
A
摘要:
目的：分析在爆炸冲击与侧向瞬时倾倒时，人体手臂内部的损伤效应。方法：以中国数字人中肩部到指尖的727张影像数据作为数据基础，经过组织分割、三维建模以及逆抄数的方式获得组织结构几何实体，在COMSOL Multiphysics 5.5有限元仿真软件中建立人体前臂损伤机制模型，通过在载荷面加载[1.4×106 N/m2]的冲击力，响应时间[2×10-5 ]s，以此分析前臂受到应力时的冲击力扩散机制。结果：通过建模分析发现，由于皮肤、脂肪、肌肉是粘弹性组织，当机体受到应力冲击时，应力会通过变形的方式将能量释放出来，在应力冲击下这些组织损伤并不明显。然而，由于骨骼是刚性组织，外界施加的能量在此处没法转化成位移消散，从而导致在骨骼处会有大量能量蓄积，骨骼处的应力张量最大。当应力张量超过骨骼最大承受值时，就会引起骨折来进行能量转移。结论：在应力冲击中，由于粘弹性组织可以将应力能量转化成位移来实现能量消散，而刚性组织无法实现，从而导致在应力冲击中，骨骼的损伤是非常明显的。
Abstract:
Abstract: Objective To analyze the damage effect inside human arm when suffering from explosion impact and lateral instantaneous toppling. Methods Taking the 727 images from the shoulder to the fingertip of the Chinese Digital Human as the data basis, the geometric entity of the tissues was obtained through tissue segmentation, 3D modeling, and reverse engineering. Subsequently, the injury mechanism model of stress on human forearm was established using the finite element simulation software COMSOL Multiphysics 5.5. The diffusion mechanism of impact force on human forearm was analyzed by loading the impact force of [1.4×106 N/m2] on the surface, with the response time of [2×10-5] s. Results Through modeling and analysis, it was found that because of the viscoelastic properties of skin, fat and muscle, when the body was subjected to stress impact, the generated energy could be released by deformation, so that the body would not be seriously damaged, and that the damage of stress impact to these tissues was not obvious. However, the bone is a kind of rigid tissue, and the energy exerted externally could not be converted into displacement and dissipated here, which caused a large amount of energy accumulated at the bone, so that the stress tensor at the bone was the largest. When the stress tensor exceeded the maximum bearing value of the bone, it would lead to fractures for energy transfer. Conclusion Under stress impact, the viscoelastic tissue can convert stress energy into displacement for energy dissipation, while rigid tissue cannot. Therefore, the damage of stress impact to the bone is very obvious.

相似文献/References:

[1]张双,王久江,余远昱,等.基于中国数字人的经皮神经电刺激信号传导机制建模与分析[J].中国医学物理学杂志,2022,39(1):57.[doi:DOI:10.3969/j.issn.1005-202X.2022.01.010]
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备注/Memo

备注/Memo:
【收稿日期】2022-12-07 【基金项目】四川省“大学生创新创业训练计划”项目（X2022053）；成都医学院四川应用心理学研究中心资助项目（CSXL-21103） 【作者简介】张敏，讲师，主要研究方向：生物建模，E-mail: 10001428@njtc.edu.cn 【通信作者】秦雨萍，副教授，主要研究方向：生物建模，E-mail: qin_yp@yeah.net
更新日期/Last Update: 2023-03-03