Numerical computation on the scaffolds models with regular square holes using nonlinear fluid-solid-coupling approaches
- VernacularTitle:方形孔结构细胞支架非线性流固耦合数值计算
- Author:
Yabin ZHAI
;
Yuhong CUI
;
Wenjiao LI
- Publication Type:Journal Article
- Keywords:
Numerical computation;
Fluid-soild-coupling methed;
Scaffolds;
Nonlinear Porosity;
Stress
- From:
Journal of Medical Biomechanics
2010;25(1):4-10
- CountryChina
- Language:Chinese
-
Abstract:
Objective The influencing parameters of solid and fluid computing fields for the scaffolds models with regular square holes were discussed by nonlinear fluid-solid-coupling approaches.The numerical computational resuits of which the models were regarded as both rigid body and non-linear elasticity were compared as well.Method One direct fluid-solid-coupling approach and two indirect fluid-solid-coupling approaches were adopted,and the calculating reliability of three kinds of fluid-solid coupling methods was verified.Rasults The solid-fluidcoupling computational results are obtained in light of 12 kinds of scaffolds models which are constructed by 3 groups of square side length(50,100 and 150 μm)and 4 groups of porosity(61%,65%,77%and 84%).The field parameters of those solid models including stress,strain and displacement and those fluid models including static pressure,velocity,wall shear stress and strain rate are achieved and compared.Conclusion There appear some difference between the results of porous scaffold models as a rigid body and as non-linear elasticity.The different porosity with the same pore radius or the different pore radius with the same porosity would affect the field parameters of solid models and fluid models in varying degrees.
