肩关节手术套管流固耦合力学特性分析

Analysis of Fluid-Solid Interaction Mechanics Characteristics of Shoulder Joint Surgical Sleeve

摘要: 本文主要探究套管的长度、流体速度的变化对流体和套管的响应。使用Solid Works分别建立套管长度为70.0 mm、75.0 mm、80.0 mm、85.0 mm以及流体速度参数为1.0 m/s、1.5 m/s、2.0 m/s以及2.5 m/s的模型，导入到Ansys中进行有限元分析。求解出流体出口速度、压力值、变形量、冯米塞斯应力以及剪切应力的变化。由结果可知，随流速的增加，出口速度、压力值、变形量以及应力不断增大；套管长度对流体的出口速度没有影响，流体压力值随着套管长度的变化也没有显著的变化，变形量随套管长度的增加缓慢增加，应力值先增加后减小。套管长度变化和流体流速对剪切力都有较大的影响。

Abstract: This paper mainly explores the response of the cannula length and fluid velocity to the fluid and cannula. We use Solid Works to create models with cannula lengths of 70.0 mm, 75.0 mm, 80.0 mm, 85.0 mm and fluid velocity parameters of 1.0 m/s, 1.5 m/s, 2.0 m/s, and 2.5 m/s respectively. And import them into Ansys Perform finite element analysis. Solving the fluid outlet velocity, pressure value, deformation, von Mises stress and shear change in shear stress. It can be seen from the re-sults that with the increase of the flow rate, the outlet velocity, pressure value, deformation and stress increase continuously. The cannula length has no effect on the outlet velocity of the fluid. The fluid pressure value does not change significantly with the change of the cannula length. The de-formation increases slowly with the increase of the cannula length. The stress value first increases and then decreases. Changes in cannula length and fluid velocity have a large effect on shear stress.