The Importance of Checking Equilibrium in FEA
Abstract: Satisfaction of equilibrium of nodal forces in the h- and p-versions of the finite element method is a property of the displacement formulation and is unrelated to the quality or reliability of the finite element solution.
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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