Abstract
The purpose of this paper is to present analytical, closed-form expressions for the energy
released for crushing and the impact impulse during ship collisions. Ship}ship collisions, ship
collisions with rigid walls and ship collisions with #exible o!shore structures are considered.
The derived mathematical models include friction at the contact point so that situation where
the collision results in a sliding motion is included. Results obtained by application of the
present procedure are compared with results obtained by time simulations and good agreement
has been achieved. In addition, a number of illustrative examples are presented. The procedure
presented in the paper is well suited for inclusion in a probabilistic calculation model for
damage of ship structures due to collisions. ( 1999 Elsevier Science Ltd. All rights reserved.