On the asymptotic behaviour of solutions of a damped oscillator under a sublinear friction term

On the asymptotic behaviour of solutions of a damped oscillator under a sublinear friction term
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发表时间:
2001
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通讯作者:
J. I. Díaz;A. Liñán
J. I. Díaz;A. Liñán
中科院分区:
其他
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作者:
J. I. Díaz;A. Liñán

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我们表明,存在两条初始数据曲线(xo,vo),其中对应的柯西问题的解x(t)与方程xtt +相关|习|a_1xt + x - 0,其中a G(0,1)在有限时间后消失.通过使用渐近方法和比较参数,我们表明,对于许多其他的初始数据的解决方案衰减到0,在无限的时间,作为i-"/i 1-”)。
We show that there are two curves of initial data (xo, vo) for which the solutions x(t) of the corresponding Cauchy problem associated to the equation xtt + |xi|a_1 xt + x — 0, where a G (0,1), vanish after a finite time. By using asymptotic and methods and comparison arguments we show that for many other initial data the solutions decay to 0, in an infinite time, as i-"/i1-").