A numerical investigation into the effects of slamming impulsive loads on the elastic–plastic response of imperfect stiffened aluminium plates

Abstract Nowadays stiffened aluminium panels have been widely used for marine applications such as building high speed vessels. The panels of high speed vessels are subjected to different in plane and out-of-plane loads. One of the most important out-of-plane loads is the impulse caused by bottom slamming. In the present study, the transient large deflection elastic–plastic responses of a number of stiffened aluminium panels subject to slamming impulsive loads are investigated. The impulsive loads are exerted on the finite element models of aluminium panels proposed by Ultimate Strength Committee of ISSC 2003. Several impact conditions are considered to study the influence of several structural factors such as heat affected zone (HAZ) arrangement, boundary conditions, thickness of plating, number of transverse frames and in-plane fixation. Based on these studies, several design-oriented conclusions are issued. Moreover, this paper outlines the various aspects of the influence of the HAZ presence on the strength of the slam-loaded panels with respect to loading time ratio.

[1]  K. Bathe.  Finite Element Procedures , 1995 .

[2]  Armin W. Troesch,et al.  Hydrodynamic Impact-Induced Vibration Characteristics of a Uniform Euler-Bernoulli Beam , 2009 .

[3]  Khosrow Ghavami,et al.  A numerical assessment of the buckling/ultimate strength characteristics of stiffened aluminium plates with fixed/floating transverse frames , 2009 .

[4]  Ivan Stenius,et al.  Finite element modelling of hydroelasticity in hull-water impacts , 2006 .

[5]  Magnus Langseth,et al.  Stiffened aluminium panels subjected to axial compression , 2001 .

[6]  Philippe Rigo,et al.  Sensitivity analysis on ultimate strength of aluminium stiffened panels , 2003 .

[7]  Šime Malenica,et al.  Hydroelastic coupling of beam finite element model with Wagner theory of water impact , 2006 .

[8]  O. Faltinsen,et al.  Water entry of two-dimensional bodies , 1993, Journal of Fluid Mechanics.

[9]  Julio G. Giannotti.  HIGH SPEED SHIP STRUCTURAL DYNAMICS: PRACTICAL APPLICATION TO DESIGN , 1978 .

[10]  Torgeir Moan,et al.  Ultimate strength of stiffened aluminium panels with predominantly torsional failure modes , 2001 .

[11]  Yoichi Sumi,et al.  On the water impact and elastic response of a flat plate at small impact angles , 2000 .

[12]  Odd M. Faltinsen.  Water entry of a wedge by hydroelastic orthotropic plate theory , 1999 .

[13]  Wei-Hui Wang,et al.  EFFECT OF ASYMMETRIC HYDRODYNAMIC IMPACT ON THE DYNAMIC RESPONSE OF A PLATE STRUCTURE , 2000 .

[14]  Jeom Kee Paik,et al.  Ultimate Strength of Aluminum Plates and Stiffened Panels for Marine Applications , 2004 .

[15]  Philippe Rigo,et al.  Post-buckling behaviour and strength of multi-stiffened aluminium panels under combined axial compression and lateral pressure , 2010 .

[16]  Jakob Kuttenkeuler,et al.  Hydroelastic interaction in panel-water impacts of high-speed craft , 2011 .

[17]  Bernard Peseux,et al.  Hydrodynamic impact: Numerical and experimental investigations , 2005 .

[18]  C. Guedes Soares,et al.  Numerical and experimental study of hydrodynamic impact and elastic response of one free-drop wedge with stiffened panels , 2012 .

[19]  Odd M. Faltinsen,et al.  Hydrodynamics of High-Speed Marine Vehicles , 2006 .

[20]  Nicolas Aquelet,et al.  Euler–Lagrange coupling with damping effects: Application to slamming problems , 2006 .

[21]  H. J. Pursey.  Merchant ship construction: Especially written for the merchant navy , 1975 .

[22]  Magnus Langseth,et al.  Ultimate compressive strength of plate elements in aluminium: Correlation of finite element analyses and tests , 1997 .

[23]  Philippe Rigo,et al.  Sensitivity analysis on the elastic buckling and ultimate strength of continuous stiffened aluminium plates under combined in-plane compression and lateral pressure , 2009 .