Unidirectional evolution equations of diffusion type

Goro Akagi; Masato Kimura

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arXiv · 1501.01072

Unidirectional evolution equations of diffusion type

Goro Akagi·Masato Kimura

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Abstract

This paper is concerned with the uniqueness, existence, comparison principle and long-time behavior of solutions to the initial-boundary value problem for a unidirectional diffusion equation. The unidirectional evolution often appears in Damage Mechanics due to the strong irreversibility of crack propagation or damage evolution. The existence of solutions is proved in an L^2-framework by introducing a peculiar discretization of the unidirectional diffusion equation by means of variational inequities of obstacle type and by developing a regularity theory for such variational inequalities. The novel discretization argument will be also applied to prove the comparison principle as well as to investigate the long-time behavior of solutions.

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Goro Akagi, Masato Kimura. 2015-01-06. Unidirectional evolution equations of diffusion type. https://arxiv.org/abs/1501.01072

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