期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
Analysis of mechanical performance of braided esophageal stent structure and its wires
1
作者 倪晓宇 王果 +1 位作者 龙志红 潘长网 《Journal of Southeast University(English Edition)》 EI CAS 2012年第4期457-463,共7页
This paper aims to find the relationship between the structural parameters and the radial stiffness of the braided stent and to understand the stress distribution law of the wires. According to the equation of the spa... This paper aims to find the relationship between the structural parameters and the radial stiffness of the braided stent and to understand the stress distribution law of the wires. According to the equation of the space spiral curve, a three-dimensional parametrical geometrical model is constructed. The finite element model is built by using the beam-beam contact elements and 3D beam elements. The constituent nitinol wires are assumed to be linear elastic material. The finite element analysis figures out that the radial stiffness of the stent and the stress distribution of the wires are influenced by all the structural parameters. The helix pitch of the wires is the most important factor. Under the condition of the same load and other structural parameters remaining unchanged, when the number of wires is 24, the stress of the wire crosssection is at the minimum. A comparison between the vitro experimental results and the analytical results is conducted, and the data is consistent, which proves that the current finite element model can be used to appropriately predict the mechanical performance of the braided esophageal stents. 展开更多
关键词 braided esophageal stent finite element mechanical performance radial stiffness WIRE
下载PDF
滚动直线导轨副的性能分析和比对
2
作者 赵美玲 《机电工程技术》 2009年第6期126-128,共3页
通过对滚柱式和滚珠式直线导轨副的刚性、承载能力、摩擦特性及额定寿命等的性能分析,阐明了滚柱式直线导轨副优异的性能特性。
关键词 滚珠式直线导轨副 滚柱式直线导轨副 径向刚性 额定动载荷 额定静载荷 额定寿命
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部