EFFECTS OF KEY FACTORS ON HULL GIRDER ULTIMATE STRENGTH ESTIMATION BY PROGRESSIVE COLLAPSE CALCULATIONS

Authors

  • HASAN ÖLMEZ KARADENIZ TECHNICAL UNIVERSITY
  • ERTEKIN BAYRAKTARKATAL Ä°STANBUL TECHNICAL UNIVERSITY

Keywords:

ULTIMATE STRENGTH, PROGRESSIVE COLLAPSE, SMITH METHOD, ORTHOTROPIC PANEL, ELEMENT DISCRETIZATION, INITIAL DISTORTIONS

Abstract

THE ESTIMATION OF THE SHIP HULL GIRDER ULTIMATE STRENGTHS UNDER VERTICAL BENDING MOMENTS AS CLOSE TO REAL BEHAVIOR IS VITAL BOTH FOR DESIGN STAGE OR SEAGOING LIFE. IT DEPENDS ON A NUMBER OF KEY FACTORS INCLUDING THE STRENGTH OF THE STRUCTURAL MATERIAL, INITIAL DISTORTIONS, THE DIMENSIONS AND LAYOUT OF THE STRUCTURAL ELEMENTS, THE ELEMENT DISCRETIZATION (IDEALIZATION) OF HULL GIRDER SECTION. IN THIS STUDY, THE MAIN TARGET IS INVESTIGATION OF THE EFFECTS OF HULL GIRDER SECTION ELEMENT DISCRETIZATION, INITIAL DEFLECTION OF PLATES AND RESIDUAL WELDING STRESS AS INITIAL DISTORTIONS, AND CORROSION DIMINUTION FOR ELEMENTS ON ULTIMATE HULL GIRDER STRENGTH ESTIMATION WITH USING PROGRESSIVE COLLAPSE ANALYSIS-BASED HULT CODE DEVELOPED BY AUTHORS. IN THIS PAPER, HULL GIRDER ULTIMATE STRENGTH RESULTS OF HULT AND IACS-CSR CALCULATIONS WITH DIFFERENT KEY FACTOR SCENARIOS ARE PRESENTED FOR TEN BENCHMARK SHIP CROSS SECTIONS AND ARE COMPARED WITH EACH OTHER AND PREVIOUSLY PUBLISHED RESULTS. CRITICAL COLLAPSE MOMENT VALUES OF MID-SHIP CROSS SECTIONS ARE CALCULATED AND SHOWN TO AGREE WELL WITH THE RESULTS OF PREVIOUS STUDIES.

Author Biographies

HASAN ÖLMEZ, KARADENIZ TECHNICAL UNIVERSITY

MARINE SCIENCE FACULTY, NAVAL ARCHITECTURE AND MARINE ENGINEERING DEPARTMENT

ERTEKIN BAYRAKTARKATAL, Ä°STANBUL TECHNICAL UNIVERSITY

FACULTY OF NAVAL ARCHITECTURE AND OCEAN ENGINEERING, NAVAL ARCHITECTURE AND MARINE ENGINEERING DEPARTMENT

Published

2016-08-26

Issue

Section

Articles