Accession Number : ADA329187

Title :   Nonlinear Finite Element Simulation of the Test Procedure for Stiffened Panels under Combined Lateral and In-plane Loads.

Descriptive Note : Technical memo.,

Corporate Author : DEFENCE RESEARCH ESTABLISHMENT ATLANTIC DARTMOUTH (NOVA SCOTIA)

Personal Author(s) : Hu, Thomas S.

PDF Url : ADA329187

Report Date : MAR 1997

Pagination or Media Count : 49

Abstract : DREA conducted a joint structural testing project with the U.S. Interagency Ship Structures Committee (SSC) at C-PER (Centre For Engineering Research Inc., Edmonton) earlier this year. Twelve stiffened plates, seven without damage and five with damage, having dimensions approximately equal to a typical stiffened panel at the strength deck of the Canadian Patrol Frigate (CPF) were tested. One of the objectives of this project was to conduct a computer simulation of the test procedure with the non-linear finite element method. It was hoped that after a successful simulation, panels with other dimensions and parameters could be studied numerically. As the scientific authority of this project, the author planned the test procedure, conducted the numerical prediction of the collapse load of the specimens, and performed the computer simulation of the test procedure. Because of the complexity of the computer simulation and completely different behavior between damaged and undamaged specimens, this memorandum only summarizes the finite element results on specimens without damage and their relation with the test observations. Seven specimens, which failed either in tripping or in combined plate and flexural buckling modes under combined lateral and axial loads, were modeled. Some interesting buckling phenomena were discovered and are discussed.

Descriptors :   *STRUCTURAL ANALYSIS, *BUCKLING, *SHIP HULLS, COMPUTERIZED SIMULATION, FINITE ELEMENT ANALYSIS, DEFORMATION, STIFFNESS, DAMAGE ASSESSMENT, CANADA, STRUCTURAL RESPONSE, FLEXURAL STRENGTH, FRIGATES, SHIP MODELS, AXIAL LOADS.

Subject Categories : Marine Engineering
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE