Systems and methods of limiting contact penetration in numerical simulation of non-linear structure response
US7953578B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 27, 2008 |
| Grant date | May 31, 2011 |
| Priority date | — |
| Expiry date | Sep 23, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F30/23
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Systems and methods of limiting contact penetration in numerical simulation of non-linear structure response using implicit finite element analysis are described. According to one aspect, a finite element analysis (FEA) model of a structure is defined as a number of nodes and elements based on geometry and material properties of the structure. A time-marching analysis of the FEA model is then performed. The time-marching analysis results contain a number of solutions of non-linear structure response at respective time steps. Solution at each time step requires at least one iteration to compute. Non-linear structure response is determined in the following manner: 1) determining a search direction; 2) calculating a contact penetration parameter in the search direction; and 3) finding a minimum energy imbalance location along the search direction as a solution which is further restricted by the CPP such that contact penetration of the structure is substantially limited.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.