## Application of Boundary Integral Method to Elastoplastic Analysis of V-notched Beams |

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Ay AyL biharmonic equation boundary integral equation BOUNDARY INTEGRAL METHOD Calculate Cartesian coordinates centroids coefficients convergence parameter Dimensionless equivalent stress dimensionless generalized stress Dimensionless load dimensionless notch depth edge notch subjected figure 28 finite element method Growth of plastic integral equation method interior grid interval Lewis Research Center linear elastic load for specimen load increment matrix method of successive modified total strain n x n nodal points notch angle notch for specimen notch opening displacement number of unknowns obtained plane stress plastic flow plastic strain increments plastic zone Poisson's ratio pure bending shown in figure simultaneous algebraic equations single edge notch specimen with single strain distributions strain hardening parameter strain tensor stress and strain stress equations 14 stress field stress function cp stress intensity factor stress singularity stress-strain curve subjected to pure successive elastic solutions V-notched beam vicinity of notch y-directional stress Young's modulus yr-l yr+1 yr+l