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arXiv 2402.07628math.DSmath.AP
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关于一维分布端口哈密顿系统的隐式和显式表示

On implicit and explicit representations for 1D distributed port-Hamiltonian systems

Antoine Bendimerad-Hohl, Denis Matignon, Ghislain Haine, Laurent Lefèvre

AI总结:

本文研究带耗散的一维分布端口哈密顿系统的显式与隐式表示,通过地下水渗流与纳米棒等模型,在Stokes-Lagrange子空间中建立隐式表示,推导修正哈密顿函数与功率平衡方程,并证明显隐式间双射变换与流约束投影算子可交换。

摘要:

首先,考虑了两个以显式(描述符)形式给出的带耗散的一维分布端口哈密顿系统示例:地下水渗流的Dzekster模型和具有非局部粘性阻尼的纳米棒模型。提出了Stokes-Lagrange子空间中的隐式表示。这些表示导出了带有空间微分算子的修正哈密顿函数。推导了相关的功率平衡方程以及新的边界端口。其次,回顾了Timoshenko和Euler-Bernoulli梁的端口哈密顿公式,后者是前者的流约束版本。推导了这些模型在Stokes-Lagrange子空间中的隐式表示及相应的功率平衡方程。提出了显式和隐式表示之间的双射变换。证明了这些变换与流约束投影算子可交换。

英文摘要:

First, two examples of 1D distributed port-Hamiltonian systems with dissipation, given in explicit (descriptor) form, are considered: the Dzekster model for the seepage of underground water and a nanorod model with non-local viscous damping. Implicit representations in Stokes-Lagrange subspaces are formulated. These formulations lead to modified Hamiltonian functions with spatial differential operators. The associated power balance equations are derived, together with the new boundary ports. Second, the port-Hamiltonian formulations for the Timoshenko and the Euler-Bernoulli beams are recalled, the latter being a flow-constrained version of the former. Implicit representations of these models in Stokes-Lagrange subspaces and corresponding power balance equations are derived. Bijective transformations are proposed between the explicit and implicit representations. It is proven these transformations commute with the flow-constraint projection operator.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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