Journal of the Society of Naval Architects of Korea (대한조선학회논문집)

The Society of Naval Architects of Korea (대한조선학회)
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A Study on the Collapse Strength Characteristics of Ship Bottom Plating Subject to Slamming Induced Impact Lateral Pressure Loads

선저슬래밍 충격횡압력을 받는 선체 판부재의 붕괴강도 특성에 관한 연구

  • 백점기 (부산대학교 조선해양공학과 기계기술연구원) ;
  • 정장영 (부산대학교 조선해양공학과 기계기술연구원) ;
  • 백영민 (부산대학교 조선해양공학과)
  • Published : 1999.05.01
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Abstract

The twin aims of the paper are to investigate the collapse strength characteristics of ship plating subject to impact pressure loads and to develop a simple structural design formula considering impact load effects. The general purpose nonlinear finite element program STARDYNE together with existing experimental results is used to investigate the collapse behavior of plating under impact pressure loads. The rigid plastic theory taking into account large deflection effects is applied to the development of the design formulation. In the theoretical method, the collapse strength formulation for plating subject to hydrostatic pressure is first derived using the rigid plastic theory. By including the strain rate erects in the formulation it can be applied to impact pressure problems. As illustrative examples, the collapse behavior of steel unstiffened plates and aluminum alloy stiffened panels subject to impact pressure loads is analyzed.

본 연구에서는 충격횡압력을 받는 선체 판부재의 붕괴강도 특성을 분석하고 충격하중 효과를 고려한 간이 구조설계식을 제시하고자 한다. 충격횡압력하에 판부재의 붕괴거동을 분석하기 위해 기존의 실험결과와 더불어 범용 비선형 유한요소해석 프로그램인 STARDYNE을 이용하였다. 이론적 방법으로는 먼저 강소성이론을 이용하여 정적 횡압력을 받는 판부재에 대한 붕괴강도식을 도출하였다. 또한, 변형률속도 효과를 고려하여 충격 횡압력 문제에도 적용하였다. 실제 판부재에 적용 예로써 충격횡압력을 받는 강판부재와 알루미늄합금 보강판부재에 대한 붕괴거동을 분석하였다.

Keywords

References

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