数学物理学报 ›› 2023, Vol. 43 ›› Issue (6): 1774-1788.

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一类具有时滞的 Gierer-Meinhardt 活化抑制模型的分支分析

马亚妮1,袁海龙1,2,*()   

  1. 1陕西科技大学数学与数据科学学院 西安 710021
    2西安交通大学数学与统计学院 西安 710049
  • 收稿日期:2022-08-08 修回日期:2023-07-07 出版日期:2023-12-26 发布日期:2023-11-16
  • 通讯作者: *袁海龙,E-mail: yuanhailong@sust.edu.cn
  • 基金资助:
    国家自然科学基金(11901370);陕西省自然科学基础研究计划项目基金(2019JQ-516);陕西省教育厅专项科研计划项目(19JK0142);国家博士后基金(2019M653578);陕西省科协人才托举项目(20200508)

Bifurcation Analysis of a Class of Gierer-Meinhardt Activation Inhibition Model with Time Delay

Ma Yani1,Yuan Hailong1,2,*()   

  1. 1School of Mathematics and Data Science, Shanxi University of Science and Technology, Xi'an 710021
    2School of Mathematics and Statistics, Xi'an Jiaotong University, Xi'an 710049
  • Received:2022-08-08 Revised:2023-07-07 Online:2023-12-26 Published:2023-11-16
  • Supported by:
    NSFC(11901370);Natural Science Basic Research Plan in Shannxi Province(2019JQ-516);Natural Science Foundation of Shanxi Provincial Department of Education grant(19JK0142);Natural Science Foundation of China(2019M653578);Shanxi Provincial Association for Science and Technology(20200508)

摘要:

该文研究了一类在齐次 Neumann 边界条件下具有时滞扩散的 Gierer-Meinhardt 活化抑制模型. 首先, 利用谱理论得到了该模型正平衡点的局部渐近稳定性; 其次, 以时滞为分支参数, 研究了该模型 Hopf 分支的存在性; 接着, 根据偏泛函微分方程的中心流形定理和正规型理论, 得到了该 Hopf 分支方向和分支周期解的稳定性; 最后, 利用 Matlab 软件, 模拟了该系统在临界点附近经历的 Hopf 分支.

关键词: 时滞, Gierer-Meinhardt 模型, Hopf 分支, 稳定性, 数值模拟

Abstract:

In this paper, we consider a class of Gierer-Meinhardt activation inhibition model with time delay diffusion under homogeneous Neumann boundary conditions. Firstly, the local asymptotic stability of the positive equilibrium of the model is obtained by using spectral theory; second, choosing the time delay as the bifurcation parameter, the existence of the Hopf bifurcation of the model is analyzed; next, the formulae to determine the direction of the Hopf bifurcation and the stability of the bifurcating periodic solutions by applying the center manifold theorem and normal form theory for partial differential equation are derived; finally, numerical simulations are also carried out to simulate the Hopf bifurcation that the model go through near the critical point.

Key words: Time delay, Gierer-Meinhardt model, Hopf bifurcation, Stability, Simulation

中图分类号: 

  • O175.12