StressCheck Tutorial: Computation of Cross Section Centroid
Abstract: Using intrinsic functions SPCTRX, SPCTRY and SPCTRZ to compute the global X, Y, Z locations of a cross section centroid. The locations are computed through the application of a “dummy” traction (with X=SPCTRX/SPAREA, Y=SPCTRY/SPAREA and Z=SPCTRZ/SPAREA) to the surface or surfaces representing the cross section, and then performing a load check to return the X, Y, Z locations of the centroid.
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“In the case of the through crack configuration, the comparison of experimental and StressCheck® derived geometry factors showed a close correlation and were an improvement to solutions provided in AFGROW at the time. Based on the results of this research, StressCheck® pin-loaded lug geometry factors have since been incorporated into the AFGROW software.”
Dr. Alten GrandtPurdue University