ALEXANDRIA, Va., June 17 -- United States Patent no. 12,314,640, issued on May 27, was assigned to ANSYS INC. (Canonsburg, Pa.).

"Methods and systems for modelling surface-based constraints in finite element analysis model" was invented by Hankang Yang (Bridgeville, Pa.), Yongyi Zhu (Venetia, Pa.) and Yong-Cheng Liu (Pittsburgh).

According to the abstract* released by the U.S. Patent & Trademark Office: "A model representing a physical object is received. The model contains a pilot node, one or more surface nodes, and a constraint for coupling displacements/movements of the pilot node with the one or more surface nodes via a set of constraint equations. The pilot node is subject to a condition that restricts node swapping for resolving no...