Accession Number : AD0029403


Title :   CRACKING OF SIMPLE STRUCTURAL GEOMETRIES: INVESTIGATION OF WELDED SHIP DETAILS


Corporate Author : SHIP STRUCTURE COMMITTEE WASHINGTON DC


Personal Author(s) : Carpenter, S T ; Linsenmeyer, R F


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/029403.pdf


Report Date : 15 Jun 1953


Pagination or Media Count : 90


Abstract : This progress report presents the results of an investigation of the effect of geometry on strength and transition temperature of certain structural details found in welded ships. The detail geometries investigated were those which are currently used in ship structural design, or certain proposed modifications to existing design. These include the structural geometries found at the ends of welded, free ended stiffeners and longitudinals, and the transition details between the sheer strake and fashion plate. The specimens were of 3/4-inch thick project steel D sub N or ABS class B steel. For the tests in which free end stiffeners and longitudinals were involved, variations in the contour of the free end were investigated. It was found that cutting the end of a stiffener or a longitudinal to a radius was definitely beneficial. The chief benefits were in the lowering of transition temperature when the ends of these structural members were cut back from a square ended condition. Strength was not affected to any critical extent by varying the end geometry. The results emphasize the importance of avoiding abrupt structural transitions from one component to another. As smooth a transition as may be practicable gives the best results.


Descriptors :   *FRACTURE(MECHANICS) , *WELDED JOINTS , *SHIP PLATES , MECHANICAL PROPERTIES , SHIP STRUCTURAL COMPONENTS , WELDING , NAVAL ARCHITECTURE , CRACKS


Subject Categories : Couplers, Fasteners, and Joints
      Marine Engineering


Distribution Statement : APPROVED FOR PUBLIC RELEASE