Some notes on assessment of heavy naval weapons effects

This report highlights means and limitations of assessments of heavy anti-ship weapons effects in ships. Essential conclusions are: o Continuum dynamical codes are appicable and already in use in practical design studies, however o Limitations in computer power make it hard to fully study global effects in detail with such codes. o Future use of continuum dynamical codes call for further developments, like better materiel failure modelling o The swedish vulnerability/lethality code AVAL principally handle all relevant weapons effects, but there are some exceptions like above water shock loading in complex strtuctures and ultimate strength of damaged hull structures. In an appendix, two proposals of how to handle ultimate strength of damaged hull structures are presented: o Fault tree analyses, by use of vital structural components o Direct ultimate strength calculations, based on an existing model for simulations of UNDEX induced whipping.