Higher‐order energy consistent time integrators for nonlinear thermoviscoelastodynamics

Higher‐order energy consistent time integrators for nonlinear thermoviscoelastodynamics
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用于非线性热粘弹动力学的高阶能量一致时间积分器

DOI:
10.1002/pamm.200700183
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发表时间:
2007
期刊:
PAMM
影响因子:
--
通讯作者:
Betsch P.
Betsch P.
中科院分区:
--
文献类型:
--
作者:
Groß M;Betsch P.

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相似文献

时间有限元法的一个优点是可以很容易地构造高阶精确的时间积分器。如果应用于运动方程,另一个重要的优点是固有的能量一致性。因此,时间fe方法被用于构造非线性弹性动力学的高阶能量动量守恒时间积分器(参见参考文献[1])。考虑到具有内耗散的柔性固体的有限运动,能量一致的时间积分也有很大的优势(参见文献[2,3])。在本文中,我们证明了能量一致的时间积分对于由热传导和粘性材料引起的耗散动力学也是有利的。采用一种新的增强混合伽辽金(ehG)方法保持了能量一致性。所得到的数值格式完全满足能量平衡,与它们的精度和所用的时间步长无关。这保证了数值的稳定性。(©2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
An advantage of the temporal fe method is that higher‐order accurate time integrators can be constructed easily. A further important advantage is the inherent energy consistency if applied to equations of motion. The temporal fe method is therefore used to construct higher‐order energy‐momentum conserving time integrators for nonlinear elastodynamics (see Ref. [1]). Considering finite motions of a flexible solid body with internal dissipation, an energy consistent time integration is also of great advantage (see the references [2, 3]). In this paper, we show that an energy consistent time integration is also advantageous for dynamics with dissipation arising from conduction of heat as well as from a viscous material. The energy consistency is preserved by using a new enhanced hybrid Galerkin (ehG) method. The obtained numerical schemes satisfy the energy balance exactly, independent of their accuracy and the used time step size. This guarantees numerical stability. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
DOI: --
发表时间: 2002
期刊:
影响因子: --
作者:
X. Meng;T. Laursen
通讯作者: T. Laursen
DOI: --
发表时间: 2006
期刊:
影响因子: --
作者:
F. Armero
通讯作者: F. Armero