吉林大学学报(理学版) ›› 2024, Vol. 62 ›› Issue (1): 78-0086.

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具变指数非线性项的强阻尼波动方程的爆破

李海霞1, 曹春玲2   

  1. 1. 长春师范大学 数学学院, 长春 130032; 2. 吉林大学 数学学院, 长春 130012
  • 收稿日期:2023-03-20 出版日期:2024-01-26 发布日期:2024-01-26
  • 通讯作者: 曹春玲 E-mail:caocl@jlu.edu.cn

Blow-up  to  Strongly Damped Wave Equation with Variable-Exponent Nonlinear Term

LI Haixia1, CAO Chunling2   

  1. 1. School of Mathematics, Changchun Normal University, Changchun 130032, China;
    2. College of Mathematics, Jilin University, Changchun 130012, China
  • Received:2023-03-20 Online:2024-01-26 Published:2024-01-26

摘要: 考虑一类具变指数非线性项的强阻尼波动方程的有限时刻爆破. 借助凹方法和适当选取的参数, 给出该问题的一个新的爆破准则, 并给出爆破时间的上下界估计. 结果表明, 该爆破准则特别蕴含对任意高的初始能量, 该问题存在有限时刻爆破解.

关键词: 强阻尼, 波方程, 变指数非线性项, 爆破

Abstract: We considered the finite time blow-up to  a strongly damped  wave equation with variable-exponent nonlinear term. With the help of concave method and appropriately selected  parameters, we gave a new  blow-up criterion  for this problem and estimated the upper and lower bounds on  the blow-up time. The results show that the blow-up criterion contains special  implications for any high initial energy, and  the problem has a finite  time blow-up solutions.

Key words: strongly damped, wave equation, variable-exponent nonlinear term, blow-up

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