How to solve 2nd order multiple variable equation with ode45

8 次查看（过去 30 天）
Pedro Martins
Pedro Martins 2022-10-7
回答： Torsten 2022-10-7
Hou could i solve this equation using ode45?
  3 个评论
显示 1更早的评论
John D'Errico
John D'Errico 2022-10-7
Read the help docs for ODE45. In ther, they show how to convert asecond order ODE into a pair of first oder ODEs. So you would have a system of 4 first order ODEs. Its in the help.

请先登录，再进行评论。

请先登录，再回答此问题。

回答（1 个）

Torsten
Torsten 2022-10-7
syms t y1(t) y2(t)
syms c2 m1 m2 k1 k2 F
eqn1 = diff(y1,t,2) + c2/m1*(diff(y1,t)-diff(y2,t))+k1/m1*y1+k2/m1*(y1-y2)-F == 0;
eqn2 = diff(y2,t,2) + c2/m2*(diff(y2,t)-diff(y1,t))+k2/m2*(y2-y1) == 0;
sol = dsolve([eqn1 eqn2],'MaxDegree',4)

类别

在 Help Center 和 File Exchange 中查找有关 Ordinary Differential Equations 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by