Damage Tolerance Design of Artificial Mechanical Heart Valve Holder
ZHANG Jian-hui
ZHA Xiao
WANG Li-ya
School of Mechanical Engineering,Hangzhou Dianzi University,Hangzhou 310018,China
摘要：To study the conservative life of the artificial mechanical heart valve holder, CATIA software was used for modeling, and ABAQUS finite element analysis was used to analyze the stress of the valve holder in the complex environment of the human body and the residual thermal stress during production and processing. The damage tolerance method based on fracture mechanics analyzes the maximum initial crack size that the heart valve holder can tolerate under the premise that the structural safety life is longer than the life of the implanted patient. The results show that the maximum initial crack size is only tens of microns;the traditional S/N life analysis can only obtain non-conservative life, and the damage tolerance method is the basic requirement for analyzing the life and quality control of artificial mechanical heart valves.
机标关键词：tolerancedesignholderdamageheartartificialmechanicalvalve
分类号：TB332(工程材料学)
论文发表日期：2022-03-30
在线出版日期：2025-08-15（本平台首次上网日期，不代表文献的发表时间）
页数：12( 1-12 )
英文信息