|Table of Contents|

Finite element simulation analysis in the mucosa displacement of the rabbit’s rectum under different stress direction(PDF)

《中国医学物理学杂志》[ISSN:1005-202X/CN:44-1351/R]

Issue:
2015年06期
Page:
781-784
Research Field:
其他（激光医学等）
Publishing date:

Info

Title:
Finite element simulation analysis in the mucosa displacement of the rabbit’s rectum under different stress direction
Author(s):
KE Min-hui1;  YE Ling1;  CHEN Li-wu1;  NIU Su-sheng2;  ZHENG Ming-xiao1;  ZHANG Zhi-xi3
1Department of Anorectal Medicine, Second Peoples Hospital of Fujian University of Traditional Chinese Medicine, Fuzhou 350003, China; 2Fractures Colleage, Fujian University of Traditional Chinese Medicine, Fuzhou 350122, China; 3Photoelastic Laboratory, Fuzhou University, Fuzhou 350108, China
Keywords:
rectum;  mucosa;  displacement;  finite element;  stress direction;  node;  simulation analysis
PACS:
R318.01
DOI:
doi:10.3969/j.issn.1005-202X.2015.06.005
Abstract:
Objective To observe the influence of the mucosa displacement of the rabbit’s rectum under different stress direction. Methods We established the IRP rabbit anorectal finite element model by measuring the mechanics index of the IRP rabbit’s rectum mucosa and submucosa, and simulated on the rectal mucous under the different direction but same size of force, one force was vertical downward, the other was parallel to the direction of the rectal mucous. The observation object was the nodes which were relatively obvious level in the rectal prolapse mucous. We computed the node displacement. Results The young’s modulus of elasticity of the rabbit’s rectum mucosa and submucosa was (4.0888±0.1615) Mpa, the poisson’s ratio 0.4700±0.0050, the shear modulus of elasticity (1.3909±0.0595) Mpa. We inputted these data into the finite element model of the rabbit’s anorectum, then compared the two kinds of force. We found that there was no significant difference in the rectal ventral node (node 848 and 850) displacement (P>0.1), but there was significant difference in the rectal middle node (node 852) and dorsal node (node 854 and 856) displacement (P<0.05). Conclusion The stress direction affect the mucosa displacement. The different stress direction may affect the bowel movement

References:

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Last Update: 2015-06-18