Helpful Hints and Tips: Using the 3-2-1 Rigid Body Constraint Approach
Abstract: This presentation demonstrates the 3-2-1 rigid body constraint approach as described by Tony Abbey’s article “Free-Floating FEA Models” in Digital Engineering. Free-floating is self-equilibrated under the applied load.
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When performing parametric structural analysis, ESRD’s p-element StressCheck® FEA software is always my preferred choice due to the excellent solution quality, parametric framework, and superior computational efficiency. In fact, I recently used StressCheck® to generate stress intensity factors along a parametrically defined elliptical crack-tip across 3,000 unique geometric configurations. Considering multi-body contact was present and all simulations were performed using a laptop, this was a task well suited for StressCheck®.
Dr. Lee ZambinoResearcher, Villanova University