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poster · 2019-11-26, 22:03

I'm trying to extend a code to allow for N number of 'systems' to be solved using ODE45 that all follow the same equation. For simplicity I am starting with a spring mass damper system using the following:

Mx'' + Cx' + Kx = 0

Which translates to [x(2);((-(C/M)*x(2))-((K/M)*x(1)))] for MatLab.

So I want to be able to Define a number N which will dictate the number of systems which follow the equation above where the variables M,C & K are matrices. And allows for the ODE45 solver to operate. I am able to achieve this by manually copying and pasting and changing values, however, this is extremely cumbersome.

2019-11-26, 22:03	#1
poster 高级会员注册日期: 2019-11-21 帖子: 3,006 声望力: 66	Solving N number of differential equations with ODE45 Matlab I'm trying to extend a code to allow for N number of 'systems' to be solved using ODE45 that all follow the same equation. For simplicity I am starting with a spring mass damper system using the following: Mx'' + Cx' + Kx = 0 Which translates to [x(2);((-(C/M)x(2))-((K/M)x(1)))] for MatLab. So I want to be able to Define a number N which will dictate the number of systems which follow the equation above where the variables M,C & K are matrices. And allows for the ODE45 solver to operate. I am able to achieve this by manually copying and pasting and changing values, however, this is extremely cumbersome. More answer...