Numerically simulating structural behaviors of a product using explicit finite element analysis with a mass scaling enhanced subcycling technique
US8855976B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 17, 2012 |
| Grant date | Oct 7, 2014 |
| Priority date | — |
| Expiry date | Dec 28, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2111/10
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Methods and systems for numerically simulating structural behaviors of a product using explicit FEA with a mass scaling enhanced subcycling technique are disclosed. A FEA model of the product defined by a plurality of nodes and finite elements is received. A critical time step size is calculated for each finite element and then assigned to associated nodes. Elements are partitioned into N element groups with first group requiring minimum time step size Δt1 and other element groups requiring respective time step sizes (ΔtN=2N−1Δt1). In order not to resort or repartition the finite elements and still obtain a stable solution, respective proper amounts of mass scaling are applied to those elements that have become too small to maintain a stable solution in their respective element groups. A time-marching simulation using explicit FEA with the mass scaling enhanced subcycling technique is then conducted with such a FEA model.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.