1.物理数学力学問題 X‐FEMによるき裂折れ曲がり瞬間時のエネルギー解放率の解析
Energy release rate at the onset of crack kinking by the X-FEM analysis

Chikayoshi Yatomi, Li Bingqi
2003 Journal of Applied Mechanics  
Using the X-FEM (eXtended Finite Elememt Method),we analyze the energy release rate rate at the onset of crack kinking for an isotropic linear elastic material in an infinite plate with a centered crack under an uniaxial tension load.In the X-FEM,we propose a simple method in which only the four-node quadrilateral isoparametric elements in the fractured element are employed without the enrichment by the near-tip asymptotic solution.In the trial example for a stationary crack,we find that this
more » ... we find that this method gives the rather good approximation for the stress distribution near the crack tip.The result of the energy release rate for any kinking angle using the path independent E-Integral shows a very high accuracy in comparison with a known theoretical result
doi:10.2208/journalam.6.19 fatcat:uoapf7fulfasnmwc4mpdwd3y4u