Analysis of Plastic Models of Ship Structures Using Holography and Strain Gages,

Displacement, stress, and vibration analyses were made on a one-sixtieth scale model of a destroyer. The feasibility of using thin walled plastic models for holographic displacement and vibration analyses was investigated. Strain gages were used to investigate deckhouse effectiveness and determine main deck and deckhouse strains for comparison with holographic results. Main deck strain gages showed that the addition of a deckhouse reduced main deck strains and the insertion of an expansion joint near amidships in the deckhouse caused the main deck strains to increase to a value significantly lower than if no deckhouse were present. The local plate vibrations were also analyzed.