ode45 for forced vibration with 10 dof?

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naresh bhimchand 2019-12-5

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评论： naresh bhimchand 2019-12-6

is it possible to solve veolcity response of ode45 with 10 degrees of freedom(dof), if yes can you help me with some examples

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Walter Roberson 2019-12-5

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Possibly https://www.mathworks.com/matlabcentral/fileexchange/69509-multi-degree-of-freedom-system-solver ?

naresh bhimchand 2019-12-5

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编辑：naresh bhimchand 2019-12-5

Thanks bro.Is there any other example other than this one

Walter Roberson 2019-12-5

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https://www.mathworks.com/matlabcentral/answers/473942-ode45-multiple-degrees-of-freedom

naresh bhimchand 2019-12-5

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Thank you bro

Aquatris 2019-12-5

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编辑：Aquatris 2019-12-5

The number of degrees of freedom does not matter. If you put the equation of motion into xdot = Ax+Bu form (state space form), ode45 can be used to solve for x no matter the size of A and B. It is also true for nonlinear cases.

naresh bhimchand 2019-12-6

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Hi bro thanks for the comment.I have another doubt if below equation is the formulation of displacement and velocity response means what will be the acceleration response equation are we want to do differentiation once again are any other procedure is there?

function yp = unforced1(t,y)

dydt_1 = y(2);

dydt_2 = (-((c/m)*y(2))-((k/m)*y(1)));

yp = [y(2);(-((c/m)*y(2))-((k/m)*y(1)))];