Original scientific paper

Numerical Procedure for Two Beam Elastic Impact Analysis

Ivan ĆATIPOVIĆ ; Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, Zagreb, Croatia
Nikola VLADIMIR ; Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, Zagreb, Croatia
Marin RELJIĆ ; Brodarski Institut d.o.o. , Zagreb, Croatia

Abstract

The procedure for numerical analysis of the elastic impact of two beams is presented. The beams are modelled by using the FEM technique, and for time integration of dynamic equilibrium equation the modified linear acceleration method is applied. Special attention is paid to contact problem and to calculation execution. A short review of the energy conservation principle based method for impact force determination is also given. The procedure is illustrated with the case of collision of communication bridge between two offshore platforms and the protective construction, called arrestor. The results are compared to those obtained by energy conservation principle based method. The study of damping influence on system dynamic response is also added.

Keywords

Elastic impact; Energy method; FEM; Linear acceleration method

Hrčak ID:

42503

URI

https://hrcak.srce.hr/42503

Publication date:

26.2.2009.

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