Thanks, everyone.
So when i put in my initial conditions, and the values of m, d and k, i get out this from Maple 13:
ans := x(t) = (1/125650000)*exp(-(3/4)*t)*Pi^2*sqrt(359)*((Int(cos((7/4)*sqrt(359)*_z1)*_z1^2*cos(Pi*_z1^2)*exp((3/4)*_z1), _z1 = 0 ...
mx''+dx'+kx=constant*t^2*cos(constant*t^2) ?
Hey folks out there.
Im having a problem with this differential equation.
The mathematical model beneath is supposed to describe a nacelle with blades, standing og a tower, as shown in the embedded picture. The stiffness k of the beams are...