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广义可压缩弹性杆方程解的爆破条件

2013-06-27姜玲玉

纯粹数学与应用数学 2013年5期
关键词:波解方程解尖峰

姜玲玉

(中央财经大学应用数学学院,北京 100081)

广义可压缩弹性杆方程解的爆破条件

姜玲玉

(中央财经大学应用数学学院,北京 100081)

研究广义可压缩弹性杆方程解的爆破条件及尖峰孤立波解的存在性.首先利用所建立的爆破准则,给出一个方程在有限时刻爆破的充分条件.其次,严格证明了其尖峰孤立波解的整体存在性.该结果丰富了此类Camassa-Holm型方程的研究.

广义可压弹性杆波动方程;爆破;尖峰孤立波解

DO I:10.3969/j.issn.1008-5513.2013.05.003

1 引言

2 解的爆破

3 尖峰孤立波解的存在性

参考文献

[1]Cam assa R,Holm D.An integrable shallow w ater equation w ith peaked solitons[J].Phys.Rev.Letters, 1993,71:1661-1664.

[2]Constantin A,Lannes D.The hydrodynam ical relevance of the Camassa-Holm and Degasperis-Procesi equations[J].A rch.Ration.M ech.Anal.,2009,192:165-186.

[3]Constantin A,Escher J.W ave b reaking for non linear non local shallow water equations[J].Acta M ath., 1998,181:229-243.

[4]Constantin A,Escher J,G lobal existence and b low-up for a shallow water equation[J].Annali Sc.Norm. Sup.Pisa.,1998,26:303-328.

[5]Constan tin A,StraussW A.Stability of a class of solitary waves in com p ressib le elastic rods[J].Phys.Lett. A,2000,270:140-148.

[6]Constantin A,StraussW A.Stability of peakons[J].Comm.Pure App l.M ath.,2000,53:603-610.

[7]X in Z,Zhang P.On the weak solu tions to a shallow water equation[J].Communications on Pure and A pp lied M athematics,2000,53:1411-1433.

[8]罗婷.一类Camassa-Holm型方程的不变子空间及其精确解[J].纯粹数学与应用数学,2012,28(5):655-658.

[9]DaiH.M odel equation for non linear dispersivewaves in a com p ressib le M ooney-Rivlin rod[J].Acta M ech., 1998,127:193-203.

[10]DaiH,Huo Y.Solitary shock waves and other travelling waves in a general com p ressible hyperelastic rod[J]. Proc.Roy.Soc.London Ser.A,2000,456:331-363.

[11]Kato T.Quasi-Linear Equations of Evolution,w ith App lications to Partial Dif erential Equations[C]// Spectral Theory and D if erential Equations.Berlin:Sp ringer Verlag,1995.

[12]Gui G,Liu Y,O lver P J,et al.W ave-Breaking and Peakons for a Modifed Camassa-Holm Equation[J]. Comm.Math.Phys.,2013,319:731-759.

W ave-b reaking phenom ena for a generalized com p ressib le elastic-rod equation

Jiang Lingyu

(Department of M athematics,Central University of Finance and Econom ics,Beijing 100081,China)

We investigate in the paper the wave-breaking phenomenon of a generalized hyperelastic-rod wave equation,which occurs in f nite time for certain initialp rof les.M oreover,we obtain the existence of some peaked solitary wave solu tions.The results obtained enriches the research of the type of the Cam assa-Holm equation.

generalized hyperelastic-rod wave equation,b low-up phenom enon,peaked solitary wave solutions

O175.29

A

1008-5513(2013)05-0458-07

2008-02-10.

国家自然科学基金(11171241).

姜玲玉(1969-),副教授,研究方向:非线性偏微分方程.

2010 MSC:35J15

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