摘要
用有限元数值方法计算了在心室舒张期瓣膜关闭瞬时峰值跨瓣压差作用下的静态应力分布。分别计算了球面、柱面和旋转抛物面型的瓣叶应力分布。结果发现，旋转抛物面型瓣叶的第一主应力和主剪应力分布较优。三种型面的瓣叶应力分布还表现出一些相似的趋势。
In this paper the static stress distribution of closed valve during diastole under the peak across valve pressure difference is analyzed with nonlinear finite element method. We analyzed the three shapes i. e.,spherical,cylindrical and rotating paraboloid type valves, respectively as a result of computation, it is suggested that the maximum principal normal and shearing stress for rotating paraboloid type valve are smaller than those for the cylindrical and spherical type valves. It shows that there exist some similarities of the stress distribution among these three type valves.
出处
《重庆大学学报（自然科学版）》
CAS
CSCD
1996年第1期46-52,共7页
Journal of Chongqing University
基金
国家自然科学基金
关键词
心脏瓣膜
生物瓣
第一主应力
剪应力
有限元法
s: bioprosthesis valve
first principal normal stress
shearing stress
