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Question: Error, (in dsolve/numeric/DAE/isolate) is not linear

Question:Error, (in dsolve/numeric/DAE/isolate) is not linear

gpasmit 5 Maple 16
August 10 2012
0

Dear All,

Im trying to model a rigid body, hanging from a string. In the end I have a system of 5 Equations of Motion and with all the Initial conditions I use dsolve. It gives me the error 

Error, (in dsolve/numeric/DAE/isolate) is not linear

I know the system is not lnear but that should be not a problem. One strange thing I notice is that Maple adds these dots in some equations: (the one after 15 but please see original file)

15.*cos(`ϕz`(t))*sin(`ϕy`(t))*cos(`ϕx`(t))

Could this have anything to do with it? Or is something going wrong in the Matrix caclulations? Attached you find the original file, please have a look at it.

Kind regards

3D_with_Euler_angle.mw

 

 
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