Postresp is a graphical postprocessor for statistical processing and presentation of response in frequency and time domain

Finding your statistical responses
Postresp will do statistical postprocessing of general responses given as transfer functions in the frequency domain or as time series in the time domain.

The transfer functions are usually generated by a hydrodynamic program, but as well be transfer functions for any kind of responses.

All data needed are seamlessly transferred from a previous hydrodynamic or structural response analysis – alternatively you may define the data yourself.

The features in Postresp vary from displaying transfer functions and response spectra, through short term statistics, e.g.:

• standard deviation and mean zero-upcrossing period
• significant/expected values
• probability of exceedance and extremes of long term statistics
• fatigue
• extremes
• workability

Included is also second order statistics to study the high frequency springing responses of e.g. tension leg platforms.

Features in frequency domain

• Any transfer function – wave loads and global response taken from a hydrodynamic analysis,and stresses/forces taken from a structural analysis – may be processed statistically
• User defined transfer functions may be entered and processed
• Forward speed/doppler shift is handled
• Response variables (transfer functions) may be combined