Adaptability Analysis of Different Failure Criteria on Hollow Cortical Bone Structure under Tensile and Compressive Fracture Simulation
10.16156/j.1004-7220.2025.01.011
- VernacularTitle:拉压断裂模拟下中空皮质骨结构不同失效准则适应性分析
- Author:
Ruoxun FAN
1
;
Yitong WANG
;
Qiancheng MIAO
;
Chen HU
;
Zhengbin JIA
Author Information
1. 扬州工业职业技术学院江苏省汽车轻量化工程技术研究开发中心,江苏扬州 225127
- Publication Type:Journal Article
- Keywords:
failure criterion;
cortical bone;
compression;
three-point bending;
fracture simulation accuracy
- From:
Journal of Medical Biomechanics
2025;40(1):86-92
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the failure criterion that can accurately simulate the tensile and compressive fracture of hollow cortical bone structure.Methods Based on the previous compression and bending experimental data,the predicted results using different failure criteria were compared to determine the simulation accuracy.Results Under the compressive load,the differences in the fracture load between the simulations using the equivalent and invariant strain failure criteria and the experiment were less than 5％,indicating that these two failure criteria were suitable for predicting the cortical bone failure;under the bending load,the differences in the fracture load between the simulations using the equivalent and invariant strain failure criteria and the experiment were less than 5％,indicating that these two failure criteria could accurately predict the failure process.Conclusions The prediction accuracy using different failure criteria mainly depends on whether the strain growth rate conforms to the actual bone deformation.Too fast or too low strain growth rate will lead to premature or delayed structural fracture.The fracture simulation adopted in this study is suitable for most cortical bone structures,and can be used to determine the suitable failure criterion under different loads,so as to assist in obtaining the strength limit of cortical bone in various parts and provide data support for improving the simulation accuracy and grasping the condition of fracture occurrence in clinical practice.
