发明名称 |
Numerically simulating structural behaviors of a product using explicit finite element analysis with a mass scaling enhanced subcycling technique |
摘要 |
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 Deltat1 and other element groups requiring respective time step sizes (DeltatN=2N-1Deltat1). 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.
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申请公布号 |
US2013185029(A1) |
申请公布日期 |
2013.07.18 |
申请号 |
US201213351864 |
申请日期 |
2012.01.17 |
申请人 |
HALLQUIST JOHN O.;LIVERMORE SOFTWARE TECHNOLOGY CORPORATION |
发明人 |
HALLQUIST JOHN O. |
分类号 |
G06F17/50;G06F17/10 |
主分类号 |
G06F17/50 |
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