ANSYS疲劳分析在接骨板选型评估中的应用  

Application of ANSYS Fatigue Analysis in Type Selection and Evaluation of Bone Plate

作　　者：李书荣 李世芸[1] 熊鹰[2] 黄子毅 杨小平 LI Shurong;LI Shiyun;XIONG Ying;HUANG Ziyi;YANG Xiaoping(Faculty of Mechanical and Electrical Engineering,Kunming University of Science and Technology,Kunming 650500,China;Department of Orthopedics,the Affiliated Yan’an Hospital of Kunming Medical University,Kunming 650050,China;Yunnan Opax Medical Technology Co.,Ltd.,Kunming 650032,China)

机构地区：[1]昆明理工大学机电工程学院,昆明650500 [2]昆明医科大学附属延安医院骨科,昆明650050 [3]云南欧铂斯医疗科技有限公司,昆明650032

出　　处：《医用生物力学》2023年第3期556-560,共5页Journal of Medical Biomechanics

基　　金：重大科技生物医药专项项目(202002AA310083)。

摘　　要：目的通过对比股骨远端接骨板中A型、B型锁定加压接骨板(locking compression plate,LCP)的疲劳强度,为测试其弯曲强度及疲劳性能时对接骨板选型提供理论评估方法。方法通过对不同类型接骨板进行弯曲强度性能测试与疲劳性能测试,再结合ANSYS Workbench对接骨板总变形、von Mises应力及疲劳使用寿命进行有限元分析。结果A型接骨板疲劳强度比B型接骨板高30.7%,A型接骨板应力比B型接骨板要低,A型接骨板最低疲劳使用寿命比B型接骨板要高17%。结论A型接骨板的疲劳性能比B型接骨板良好,故A型接骨板的失效可能性比B型接骨板的可能性要低。研究结果为测试新研发的两种接骨板各种性能时对不同接骨板选型辅助提供参考。Objective By comparing the fatigue strength of type A and type B locking compression plates(LCP)in distal femoral plate,a theoretical evaluation method was provided for type selection of bone plate when testing its bending strength and fatigue performance.Methods Through bending strength performance test and fatigue performance test on bone plates with different types,combined with ANSYS Workbench,the finite element analysis on total deformation,von Mises stress and fatigue service life of bone plates were conducted.Results The fatigue strength of type A plate was 30.7%higher than that of type B plate,the stress of type A plate was lower than that of type B plate,and the minimum fatigue service life of type A plate was 17%higher than that of type B plate.Conclusions The fatigue performance of type A plate is better than that of type B plate,so the failure possibility of type A plate was lower than that of type B plate.The result provide references for assisting selection of different bone plates when testing the performance of two newly developed bone plates.

关 键 词：接骨板 疲劳使用寿命 弯曲强度 疲劳分析 

分 类 号：R318.01[医药卫生—生物医学工程]