Assessment on blast loading resistance capacity of corrugations on offshore cabins based on the P-I model

摘要: Abstract Pressure–impulse (P–I) diagrams are commonly used for assessment on blast resistance capacity of corrugations offshore cabins given blast-loading scenarios or in the early design. Current methods such as experimental models, analytical models and Nonlinear Finite Element Analysis (NLFEA) could be to generate P–I diagram. However，each single model has certain shortcomings despite its advantages. Based convenience accuracy numerical model, this study presents a procedure derive formulae easily diagram with NLFEA method. Numerical which considers strain rate effect, buckling membrane effects adopts an equivalent plastic based failure criterion is built. Parametric studies performed investigate parametric results, predict derived. An case shows that proposed can corrugations. The results also compared those obtained from SDOF approach. It shown gives better prediction than