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arXiv 0810.4766math-phastro-phmath.APmath.MPmath.QAmath.RT
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Navier方程的解及其表示结构

Solutions of Navier Equations and Their Representation Structure

Bintao Cao

摘要:

Navier方程用于描述均匀、各向同性和线弹性介质在没有体积力的情况下的变形。在数学上,该系统是一个自然的矢量(场)$O(n,\mbb{R})$ -经典拉普拉斯方程的不变推广,该方程物理上描述了弦的振动。本文将Navier方程的多项式解空间分解为不可约$O(n,\mbb{R})$ -子模的直和,并为每个不可约和项构造了一个显式基。此外,我们显式地解决了Navier方程及其波动型扩展-Lamé方程的初值问题的Fourier展开和徐的方法解决旗偏微分方程。

英文摘要:

Navier equations are used to describe the deformation of a homogeneous, isotropic and linear elastic medium in the absence of body forces. Mathematically, the system is a natural vector (field) $O(n,\mbb{R})$-invariant generalization of the classical Laplace equation, which physically describes the vibration of a string. In this paper, we decompose the space of polynomial solutions of Navier equations into a direct sum of irreducible $O(n,\mbb{R})$-submodules and construct an explicit basis for each irreducible summand. Moreover, we explicitly solve the initial value problems for Navier equations and their wave-type extension--Lamé equations by Fourier expansion and Xu's method of solving flag partial differential equations.

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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