Cg_motion udf
 

Hi,

I've to analyze a cylinder (2d) constrained with a spring, so the differential equation is S''+w^2 S= F(t) with S= displacement w=sqrt(K/m) and F(t) is the pressure force (time function).

How can i solve this problem? The UDF manual describe F=m*dv/dt and use Euler's formula, so V(t)=(F/m)*Dt+V(t-Dt)

how can i write the correct scheme for my problem?

Thanks