吉林大学学报(工学版) ›› 2010, Vol. 40 ›› Issue (03): 735-0739.

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Contact finite element simulation of bionic non-smooth injector needle during injection process

WANG Jing-chun1,ZUO Wen-jie2,GAO Yuan-ming2,GE Chang-jiang2,REN Lu-quan1   

  1. 1.Key Laboratory of Bionic Engineering of Ministry of Education, Jilin University, Changchun 130022,China；2.College of Mechanical Science &|Engineering, Jilin University, Changchun 130022,China
  • Received:2008-07-21 Online:2010-05-01 Published:2010-05-01

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Abstract:

The numerical simulations were performed for the injection process of the common injector needle and two kinds of injector needles with zigzag and wave shape non-smooth surfaces using the non-linear contact finite element method. The histories of the stress, the velocity, the kinetic energy, and the internal energy in the human soft tissue were obtained, demonstrating intuitively the effects of the non-smooth surface during the dynamic process of injection. Comparison among these three kinds of injector needles showed that the bionic non-smooth injector needles are characterized by less drag and more effective pain allviation than common needle. The wave shape non-smooth surface is better than zigzag shape surface, being in agreement with experiment result.

Key words: engineering bionics, bionic non-smoothness, contact finite element method, injector needle

CLC Number: 

  • TB17
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