Crack root radius effect on stress fields under nonlinear

The influence of crack root radius and plastic material properties on the tip fields was evaluated by strain gradient plasticity theory, classical theory. A conventional mechanism-based (CMSG) theory used in study. stress single edge tension specimen are investigated numerically for a wide range variations. Five values curvature ρ = 0 (mathematical notch); 25 nm, 30 60 nm 100 were investigated. hardening exponent varied from N 0.075 to 0.4. analysis CMSG performed two Taylor’s length parameter l 1μm 10μm. boundaries local areas, where is realized determined both HRR plasticity. sizes dominance area established their approximation equations presented. scale vicinity rhe estimated