Computer process for prescribing second-order tetrahedral elements during deformation simulation in the design analysis of structures
First Claim
Patent Images
1. A computer implemented process for prescribing second-order tetrahedral elements during simulation in the design analysis of structures by a user, comprising the steps of:
- (a) defining, by the user, a finite element model for an element including at least one tetrahedral element;
(b) defining, by the user, at least ten nodes of the at least one tetrahedral element;
(c) defining, by the computer implemented process, the at least one tetrahedral element as a combination of four hexahedral sub-elements and defining at least four sub-element nodes of the four hexahedral sub-elements using the at least ten nodes defined by the user;
(d) executing the simulation using the combination of hexahedral sub-elements; and
(e) evaluating the structure with respect to said executing step (d) for structural integrity.
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Abstract
A computer implemented process prescribes second-order tetrahedral elements during simulation in the design analysis of structure. The computer implemented process includes the steps of defining a finite element model for an element including at least one tetrahedral element, and defining the at least one tetrahedral element as a combination of hexahedral sub-elements. The computer implemented process also includes the steps of executing the simulation, and evaluating the structure for structural integrity responsive thereto.
103 Citations
23 Claims
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1. A computer implemented process for prescribing second-order tetrahedral elements during simulation in the design analysis of structures by a user, comprising the steps of:
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(a) defining, by the user, a finite element model for an element including at least one tetrahedral element;
(b) defining, by the user, at least ten nodes of the at least one tetrahedral element;
(c) defining, by the computer implemented process, the at least one tetrahedral element as a combination of four hexahedral sub-elements and defining at least four sub-element nodes of the four hexahedral sub-elements using the at least ten nodes defined by the user;
(d) executing the simulation using the combination of hexahedral sub-elements; and
(e) evaluating the structure with respect to said executing step (d) for structural integrity. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A computer readable tangible medium storing instructions for implementing a process driven by a computer, the instructions controlling the computer to perform the process of prescribing second-order tetrahedral elements during simulation in the design analysis of structures, said computer readable tangible medium storing the instructions controlling the computer to implement the following:
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(a) defining a finite element model for an element including at least one tetrahedral element;
(b) defining the at least one tetrahedral element as a combination of hexahedral sub-elements by defining nodes including at least four corner nodes, a midbody node, four midface nodes and six midedge nodes of the tetrahedral element;
(c) executing the simulation and substantially constraining the midface node of the tetrahedral element during the simulation to facilitate convergence; and
(d) evaluating the structure with respect to said executing step (c) for structural integrity. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23)
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Specification