3Belytschko T, Lu Y Y. Element free galerkin method[J]. Int J Numer Methods Engrg, 1994,37:229-256.
4Luis Gavete, Juan J. Benito, Santiago Falcon,et al.Penalty functions in constrained variational principles for element free Galerkin method[J]. Eur J Mech A/Solids, 2000,19: 699-720.
5Peterson P E. Crack growth and development of fracture zone in plain concrete and similar material,Doctoral dissertation [ D ]. Lund Institute of Technology, Sweden, 1981:174.
6Rots J G, Nauta P, Kusters G M A, et al. Smeared crack approach and fracture localization in concrete,HERON Vol. 30 [R ]. Netherlands Delft: Delft University of Technology, 1981:16-21,30-38.
7Belytschko T. Meshless method: an overview and recent development[J]. Comput Methods Appl Mech Engrg, 1996,139: 3-47.
8Kaplan M F.Crack propagation and the fracture of concrete[J].American Concrete Institute Journal,1961,58:591~610.
9Hillerborg A,Modeer M,Petersson P E.Analysis of crack formation and crack growth in concrete by means of fracture mechanics and finite elements[J].Cement and Concrete Research,1976,6(6):773~782.
10Bazant Z P,Oh B H.Crack band theory for fracture of concrete[J].Material and Structures,1983,16(93):155~177.