数学物理学报 ›› 1999, Vol. 19 ›› Issue (3): 256-265.

• 论文 • 上一篇    下一篇

一维线性热弹性系统的边界控制与衰减指数

  

  1. 北京理工大学应用数学系 |北京100081
  • 出版日期:1999-08-03 发布日期:1999-08-03

The Decay Rate of a One Dimensional Linesr Themoelastic System with Boundary Stabilizer

  1. Department |of |Applied Mathematics |Beijing Insititute |of Technology|Beijing |100081
  • Online:1999-08-03 Published:1999-08-03

摘要:

 考虑边界反馈时,一维热弹性系统的衰减速度.证明了闭环系统的谱确定增长条件成立,
且反馈增益常数可任意改变高本征频谱.最后谱方法给出了数值模拟结果.

关键词: 热弹性, 边界控制, 稳定性, 渐近分析.

Abstract:

In this paper,we give an asymptotic estimation of the eigenfrequencies of a one dimensional thenoelastic system with one end stress damping.It is shown that this kind of boundry stress feedback can improve arbitrarily thr decay rate of teh higher eigenfrequencies.The Legendre spectral method is used to compute the eigenvalues of teh damped operator.Numerical results confirms teh theoretical estimations.

Key words:  Thermoelasticity, Boundaryfeedback, Stability, Asymptoticanalysis.

中图分类号: 

  •  93C,93D