摘要
软物质等大变形材料是近年来力学与材料科学关注的热点问题,与之相关的实验研究也引起格外关注。本文将数字云纹实验技术应用于大变形材料力学实验,研究了软材料大变形场的实验测量与表征技术;以仿生皮肤材料缝线力学的应用为例进行实验分析,通过坐标变换给出集中力作用下的大变形材料径向变形场ur和环向变形场uθ的全场分布,并研究了缝线针口附近区域的变形场分布。分析结果表明,大变形材料的变形场存在明显的扇区变形特征。本文还进一步讨论了两种不同缝合方式下针口周边区域的力学变形特征,并初步分析了不同缝合方式对切口愈合产生的影响。
Large deformation material such as soft material is a hot issue of mechanics and material science in recent years. The associated experimental investigations also attract special attention. In this paper, digital Moir6 technology was applied in large deformation material mechanical experiment. The measurement and characterization technique for large deformation of soft material was investigated. The suture mechanics of bionic skin was experimentally studied and the deformation distribution near suture needle pinholes was analyzed. Radial and circumferential deformation （ur and uo） distribution maps of soft material subjected to concentrated force were given through coordinate transformation. Experimental results reveal that there are distinct sector deformation characteristics in the deformation field. The deformation characteristics near the needle pinholes of two different suturing techniques and the effect of different suturing techniques on the wound healing are also discussed in this paper.
出处
《实验力学》
CSCD
北大核心
2013年第1期1-9,共9页
Journal of Experimental Mechanics
基金
国家自然科学基金(No.11127202,No.11102134)
关键词
大变形材料
实验分析
数字云纹技术
扇区变形特征
缝线力学
large deformation material
experimental analysis
digital Moir6 technology
sectordeformation characteristic
suture mechanics
