力学与实践 ›› 2010, Vol. 32 ›› Issue (2): 90-94.DOI: 10.6052/1000-0879-2009-114

• 应用研究 • 上一篇    下一篇

蚊子口针刺破人体皮肤过程的数值模拟

孔祥清 吴承伟   

  1. 大连理工大学 大连理工大学
  • 收稿日期:2009-03-24 修回日期:2009-06-01 出版日期:2010-04-08 发布日期:2010-04-08

NUMERICAL SIMULATION OF MOSQUITO FASCICLE INSERTING INTO HUMAN SKIN

ChengWei Wu   

  • Received:2009-03-24 Revised:2009-06-01 Online:2010-04-08 Published:2010-04-08

摘要: 利用扫描电子显微镜观察了蚊子口针的结构,根据实际结构建立蚊子口 针端部模型,运用有限元软件ABAQUS对蚊子口针尖端刺入皮肤过程进行非线性有限元模拟, 考虑不同皮肤层的力学性能,讨论了刺入过程中皮肤变形与破坏、刺入力等的变化规律,模 拟过程与实际刺入实验基本相符.

关键词: 蚊子口针, 皮肤, 有限元, 数值模拟, 刺入力

Abstract: Mosquitoes can pierce their fascicle into human skin with a micro-Newton force by using a natural ultimate painless microneedle. Firstly the structure of the {\it Aedes albopictus} mosquito fascicle is obtained using a scanning electron microscope, and then the simulation model of the mosquito fascicle tip is built based on the structure obtained from the SEM observation. A numerical simulation is conducted to analyze the insertion process of the mosquito fascicle tip into a human skin using a nonlinear finite element method based on ABAQUS. The mechanical properties of different skin layers are taken into account. The deformation and failure of the skin and the insertion force are discussed. A good agreement is obtained between the numerical results and the experimental measurements.

Key words: mosquito fascicle, skin, finite element method, numerical simulation, insertion force