复合载荷下不同结构编织人工韧带的有限元分析

doi:10.13475/j.fzxb.20201206006

纺织学报 ›› 2021, Vol. 42 ›› Issue (08): 84-89.doi: 10.13475/j.fzxb.20201206006

复合载荷下不同结构编织人工韧带的有限元分析

卢俊¹^,², 王富军¹^,², 劳继红¹^,², 王璐¹^,², 林婧¹^,²()

1.东华大学纺织学院, 上海 201620
2.东华大学纺织面料技术教育部重点实验室, 上海 201620

收稿日期:2020-12-22 修回日期:2021-04-30 出版日期:2021-08-15 发布日期:2021-08-24
通讯作者: 林婧
作者简介:卢俊(1996—),男,硕士生。主要研究方向为人工韧带的生物力学性能评价。
基金资助:
国家重点研发计划项目(2018YFC1106200);高等学校学科创新引智计划资助项目(BP0719035);中央高校基本科研业务费专项基金项目(20D110128/001)

Finite element analysis of braided artificial ligaments of different structures under combined loading

LU Jun¹^,², WANG Fujun¹^,², LAO Jihong¹^,², WANG Lu¹^,², LIN Jing¹^,²()

1. College of Textiles, Donghua University, Shanghai 201620, China
2. Key Laboratory of Textile Science & Technology, Ministry of Education, Donghua University, Shanghai 201620, China

Received:2020-12-22 Revised:2021-04-30 Published:2021-08-15 Online:2021-08-24
Contact: LIN Jing

摘要/Abstract

摘要：

为探究不同结构编织人工韧带试样在人体正常步态中受到复合载荷加载时的应力分布以及摩擦损耗情况,使用有限元分析法进行数值模拟,基于纱线在空间中的螺旋轨迹以及交织规律,采用MatLab计算空间离散坐标点,并导入至Solidworks中建立试样三维模型。在ABAQUS中赋予试样材料属性、边界条件和接触摩擦属性,最后计算有限单元解。结果表明:有限元模拟曲线和实际测试曲线具有较高的一致性;施加外部载荷时,规则编织试样应力在2个方向的纱线上分布较为均匀,而三向编织试样应力主要集中于轴纱,且需要抵抗更多纱线之间的摩擦作用。该研究可为人工韧带的优化设计提供理论参考。

关键词: 人工韧带, 复合载荷, 三维模型, 有限元分析, 应力集中, 医用纺织品

Abstract:

In order to explore the stress distribution and friction loss of braided artificial ligaments of different structures under combined loading conditions in normal gait, finite element analysis method was used for calculation and analysis. According to the spiral trajectory and interweaving structure of the yarn in space, MatLab was used to calculate the discrete coordinate points in space which was then imported into Solidworks to build three-dimensional models. ABAQUS was used to assign material properties, boundary conditions, contact friction properties and calculate finite element analysis. The results show that the finite element simulation curve and the actual test curve had high agreement. When an external load was applied, the stress of the regular braided specimen was evenly distributed on the yarns in the two directions, while the stress of the tri-axial braided specimen was mainly concentrated on the shaft yarn. Moreover, tri-axial braided specimen was needed to resist more friction between the yarns. The research provides a theoretical reference for the optimal design of artificial ligaments.

Key words: artificial ligament, combined loading, three-dimensional model, finite element analysis, stress concentration, medical textiles

中图分类号:

TS101.8

卢俊, 王富军, 劳继红, 王璐, 林婧. 复合载荷下不同结构编织人工韧带的有限元分析[J]. 纺织学报, 2021, 42(08): 84-89.

LU Jun, WANG Fujun, LAO Jihong, WANG Lu, LIN Jing. Finite element analysis of braided artificial ligaments of different structures under combined loading[J]. Journal of Textile Research, 2021, 42(08): 84-89.

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试样编号	载荷实验值/N	载荷模拟值/N	相对误差/%
AL24-0	216.58	212.73	-1.78
AL24-6	509.60	469.65	-7.84

复合载荷下不同结构编织人工韧带的有限元分析

Finite element analysis of braided artificial ligaments of different structures under combined loading

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