使用再生核方法求解非线性边界值问题的数值策略

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"一种求解非线性微分方程边界值问题的数值方法,通过引入再生核技术,由内蒙工业大学数学系的于浩、王玉兰和李树光等人提出。该研究得到了内蒙古自然科学基金(No.2013MS0109)和内蒙古科技应用与开发项目基金(No.20120312)的支持。" 本文重点探讨了如何利用再生核方法解决特定类型的非线性微分方程边界值问题。在微分方程理论中,边界值问题是一类重要的问题,它要求在方程定义域的两端或者特定边界上满足特定条件的解。非线性微分方程则比线性方程更为复杂,因为它们的解不能简单地通过加减和乘除线性组合来获得。 再生核方法是一种在数值分析中用于处理各种偏微分方程和积分方程的强大工具。它的核心思想是构建一个适当的再生核函数,这个函数能够再生或复制函数空间中的某些特性,例如光滑性或正交性。通过这种方式,可以构造出一个近似解,该近似解能够精确地满足微分方程和边界条件。 在论文中,作者首先阐述了再生核方法的基本概念和理论框架,然后详细解释了如何将这种方法应用于非线性微分方程的求解。他们给出了一些具体的例子,通过实例展示了再生核方法的有效性和实用性。这些例子可能包括不同类型的非线性微分方程,如二阶、三阶或高阶方程,以及具有不同非线性项的方程。通过对这些例子的计算和分析,他们证明了再生核方法在解决此类问题时的高精度和稳定性。 此外,论文还强调了再生核方法的优势,如其对解的连续性和可微性的处理能力,以及在处理复杂边界条件时的灵活性。这些特性使得再生核方法在处理实际工程和科学问题时具有很大的潜力,比如在流体力学、热传导、电磁学等领域。 该研究为解决非线性微分方程边界值问题提供了一种新的数值方法,并通过实例证明了其有效性和可靠性。这为后续研究者提供了宝贵的理论基础和计算工具,有助于进一步推动微分方程数值解法的发展。

帮我地道的翻译:The differential variational inequalities ((DVIs), for short) are useful for the study of models involving both dynamics and constraints in the form of in￾equalities. They arise in many applications: electrical circuits with ideal diodes, Coulomb friction problems for contacting bodies, economical dynamics, dynamic traffic networks. Pang and Stewart [26], [27] established the existence, unique￾ness, and Lipschitz dependence of solutions subject to boundary conditions for (DVIs) in finite dimensional spaces. Han and Pang investigated a class of dif￾ferential quasi-variational inequalities in [11], and Li, Huang and O’Regan [18] studied a class of differential mixed variational inequalities in finite dimensional Well-Posedness of Differential Mixed Quasi-Variational-Inequalities 137 spaces. Gwinner [8] obtained an equivalence result between (DVIs) and projected dynamical systems. In [9] he also proved a stability property for (DVIs) by using the monotonicity method of Browder and Minty, and Mosco set convergence. Chen and Wang [4] studied dynamic Nash equilibrium problems which have the formulation of differential mixed quasi-variational inequalities. Elastoplastic contact problems can also be incorporated into (DMQVIs) formulation because general dynamic processes in the nonsmooth unilateral contact problems are governed by quasi-variational inequalities. A numerical study for nonsmooth contact problems with Tresca friction can be found in [10], Liu, Loi and Obukhovskii [19] studied the existence and global bifurcation for periodic solutions of a class of (DVIs) by using the topological degree theory for multivalued maps and the method of guiding functions. For more details about (DVIs) we refer to [3], [30], [12], [22]–[21].

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