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Newmark

于 2008-09-03 发布 文件大小:1KB
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代码说明:

说明:  工程中微分方程数值积分经常需要使用的Newmark法(Differential equations numerical integration project often requires the use of the Newmark method)

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Newmark.for

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    the structure of the DG-FEM is very similar to that of the finite element method (FEM), there are several fundamental differences. In particular, the mass matrix is local rather than global and thus can be inverted at very little cost, yielding a semidiscrete scheme that is explicit. Furthermore, by carefully designing the numerical flux to reflect the underlying dynamics, one has more flexibility than in the classic FEM to ensure stability for wavedominated problems. Compared with the FVM, the DG-FEM overcomes the key limitation on achieving high-order accuracy on general grids by enabling this through the local element-based basis
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