A Computer Program for Structural Response to Ship Slamming (SLAM),

Abstract

This report describes a computer program, SLAM, which uses ship slamming-impact forces and structural parameters of the hull to calculate the vertical hull-girder vibratory response in terms of displacements, accelerations, bending moments, shear forces, and stresses. The normal mode method is used so that the user can calculate only the modes of interest and can eliminate the rigid body and higher modes. Modal responses are calculated with a time-marching technique. The program uses a finite-element model of a beam which is suitable for conventional monohulls. Modifications to accommodate other model configurations can be made. Test problems show good agreement with exact solutions for a uniform Euler beam. Sample calculations are made on a MARINER-Class hull using 3 modes and again using 10 modes. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1975
Accession Number
ADA046266

Entities

People

  • Gary P. Antonides

Tags

Communities of Interest

  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Accuracy
  • Bending Moments
  • Computer Programs
  • Computers
  • Equations
  • Equations Of Motion
  • Errors
  • Experimental Data
  • Frequency
  • Mechanics
  • Model Basins
  • Procedures (Computers)
  • Resonant Frequency
  • Shear Stresses
  • Ship Hulls
  • Ship Model Basins
  • Vibration

Readers

  • Computer Science.
  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Marine Hydrodynamics