Are time functions momentum forces or pressures or equivalent forces of deflections?
A-3. The time functions that CAEPIPE requires can be any time-varying quantity. These values may be forces/moments in the case of a fluid hammer problem. CAEPIPE takes these values at each timestep (linearly interpolates if necessary) and multiplies it by the user-input scale factor and applies it in the user specified direction (FX, MY etc.). The values in the case of a fluid hammer are usually got from a transient flow analysis software which outputs the results of a fluid hammer in terms of forces on a system as a function of time. In the transient analysis program, one may be able to get different forces (as a function of time) for different piping components. By noting the direction of these forces, a CAEPIPE user may apply those forces with a scale factor if necessary, at the corresponding piping components in the noted directions. CAEPIPE then will apply those forces as explained in the previous paragraph and will compute the response of the piping system by doing a time-history
