ADVANCED NUMERICAL MODELLING TECHNIQUES APPLIED TO SUBMARINE STRUCTURES RESEARCH AND DEVELOPMENT, DESIGN, BUILD, AND REFIT AND REPAIR

摘要

This paper will present a high level summary of the applications of advanced numerical modelling to the analysis of submarine structures, particularly the pressure hull. It will describe the use of both tried and tested methods, and developing features, of commercially available Finite Element (FE) analysis software packages. The applications considered range from fundamental analysis of the collapse process, which supports future design developments and assessment of current structures, to assessment of in-service issues such as corrosion, cracking, repair and grounding. Specific examples will include: 1. Non-linear collapse analysis of pressure hulls with pseudo as-built shapes. 2. Practical modelling of welding processes. 3. Fracture mechanics and crack growth. 4. Grounding at depth. The work combines state-of-the-art modelling techniques with a pragmatic approach to finding solutions which can be implemented by Future Submarine and In Service teams alike.