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Ansys Mechanical - What's New 2023 R1

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191 Crack-face-traction from initial stress Crack size (mm) K1 (MPa mm 0.5 ) Traction converted from initial stress is automatically mapped on the growing crack faces Reference: Tada, H., Paris, P.C. and Irwin, G.R., 1973. The Stress Analysis of Cracks Handbook, 3 rd ed, ASME Press, 2000, pg 396. Approach: • Initial stress is internally converted to crack surface traction for fracture calculation • Support both static and fatigue crack growth • Limited to linear application Benefit: • Computationally faster (No Newton Raphson) • Requires initial stress data only in the immediate vicinity of crack faces Remote tensile load (60 MPa) + Initial (residual) stress (-10 MPa) (Mesh-independent data points) Residual stress field Equivalent traction load at crack faces σ ij (x,y,z)

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