Nonlinear oscillator with velocity-dependent frequency












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In a physical problem I need to investigate the following nonlinear differential equation



$$ddot x+omega^2left (1+frac{m^2dot x^2}{p^2}right)x=0,$$



where $p$ is some constant with a dimension of momentum. I will be grateful for references about such type of oscillators. So far I only found the following:




  • Ronald E. Mickens, Generalized harmonic oscillators, Journal of Sound and Vibration, Volume 236, Issue 4, Pages 730-732, 28 September 2000.










share|cite|improve this question











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    9












    $begingroup$


    In a physical problem I need to investigate the following nonlinear differential equation



    $$ddot x+omega^2left (1+frac{m^2dot x^2}{p^2}right)x=0,$$



    where $p$ is some constant with a dimension of momentum. I will be grateful for references about such type of oscillators. So far I only found the following:




    • Ronald E. Mickens, Generalized harmonic oscillators, Journal of Sound and Vibration, Volume 236, Issue 4, Pages 730-732, 28 September 2000.










    share|cite|improve this question











    $endgroup$















      9












      9








      9


      1



      $begingroup$


      In a physical problem I need to investigate the following nonlinear differential equation



      $$ddot x+omega^2left (1+frac{m^2dot x^2}{p^2}right)x=0,$$



      where $p$ is some constant with a dimension of momentum. I will be grateful for references about such type of oscillators. So far I only found the following:




      • Ronald E. Mickens, Generalized harmonic oscillators, Journal of Sound and Vibration, Volume 236, Issue 4, Pages 730-732, 28 September 2000.










      share|cite|improve this question











      $endgroup$




      In a physical problem I need to investigate the following nonlinear differential equation



      $$ddot x+omega^2left (1+frac{m^2dot x^2}{p^2}right)x=0,$$



      where $p$ is some constant with a dimension of momentum. I will be grateful for references about such type of oscillators. So far I only found the following:




      • Ronald E. Mickens, Generalized harmonic oscillators, Journal of Sound and Vibration, Volume 236, Issue 4, Pages 730-732, 28 September 2000.







      mp.mathematical-physics differential-equations






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      share|cite|improve this question













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      edited Jan 21 at 21:39









      Rodrigo de Azevedo

      1,8422719




      1,8422719










      asked Jan 21 at 12:13









      Zurab SilagadzeZurab Silagadze

      10.9k2669




      10.9k2669






















          1 Answer
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          $begingroup$

          This type of ODE,
          $$ddot{x}+f(x)dot{x}^2+g(x)=0$$
          is known as a Liénard equation of the second kind. It has been studied for example in Monotonicity of the period function of the Liénard equation of second kind (2016).



          A particular case with nice properties is
          $$ddot{x}-frac{f'(x)}{f(x)}dot{x}^2+f(x)int_0^xfrac{1}{f(u)}du=0,$$
          see Design of nonlinear isochronous oscillators.






          share|cite|improve this answer









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            $begingroup$

            This type of ODE,
            $$ddot{x}+f(x)dot{x}^2+g(x)=0$$
            is known as a Liénard equation of the second kind. It has been studied for example in Monotonicity of the period function of the Liénard equation of second kind (2016).



            A particular case with nice properties is
            $$ddot{x}-frac{f'(x)}{f(x)}dot{x}^2+f(x)int_0^xfrac{1}{f(u)}du=0,$$
            see Design of nonlinear isochronous oscillators.






            share|cite|improve this answer









            $endgroup$


















              12












              $begingroup$

              This type of ODE,
              $$ddot{x}+f(x)dot{x}^2+g(x)=0$$
              is known as a Liénard equation of the second kind. It has been studied for example in Monotonicity of the period function of the Liénard equation of second kind (2016).



              A particular case with nice properties is
              $$ddot{x}-frac{f'(x)}{f(x)}dot{x}^2+f(x)int_0^xfrac{1}{f(u)}du=0,$$
              see Design of nonlinear isochronous oscillators.






              share|cite|improve this answer









              $endgroup$
















                12












                12








                12





                $begingroup$

                This type of ODE,
                $$ddot{x}+f(x)dot{x}^2+g(x)=0$$
                is known as a Liénard equation of the second kind. It has been studied for example in Monotonicity of the period function of the Liénard equation of second kind (2016).



                A particular case with nice properties is
                $$ddot{x}-frac{f'(x)}{f(x)}dot{x}^2+f(x)int_0^xfrac{1}{f(u)}du=0,$$
                see Design of nonlinear isochronous oscillators.






                share|cite|improve this answer









                $endgroup$



                This type of ODE,
                $$ddot{x}+f(x)dot{x}^2+g(x)=0$$
                is known as a Liénard equation of the second kind. It has been studied for example in Monotonicity of the period function of the Liénard equation of second kind (2016).



                A particular case with nice properties is
                $$ddot{x}-frac{f'(x)}{f(x)}dot{x}^2+f(x)int_0^xfrac{1}{f(u)}du=0,$$
                see Design of nonlinear isochronous oscillators.







                share|cite|improve this answer












                share|cite|improve this answer



                share|cite|improve this answer










                answered Jan 21 at 12:45









                Carlo BeenakkerCarlo Beenakker

                75.4k9171280




                75.4k9171280






























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