Composite Grid Method on computation of stress intensity factors of Biomaterial Interface Crack
The stress intensity factors (SIFs) of biomaterial interface crack were analyzed using the Composite Grid Method (CGM). Two different scale grids were adopted: a coarse mesh for the whole area without considering interface crack and a fine mesh for the local singular area considering the impact of interface crack. It solved the global coarse mesh problem and the local fine mesh problem iteratively and obtained the final results. The calculation was carried out by CGM but without the demand of dense mesh near the crack tip and special crack tip elements compared with other methods. The numerical extrapolation method of determining the SIFs to avoid the oscillation singularity of asymptotic fields of elastic interface crack. Reasonable agreement was achieved and efficiency of CGM for such kind of problem was displayed.
Stress intensity factors Biomaterial interface crack Composite grid method Numerical extrapolation method.
Zhi-Peng Zhong Shui Wan
School of Transportation, Southeast University Nanjing 210096, China
国际会议
上海
英文
1591-1596
2011-10-21（万方平台首次上网日期，不代表论文的发表时间）