Design of a Multi-DOF Tuned Mounting Fixture for the Navy's Mediumweight Shock Machine

Abstract

A near miss underwater explosion can significantly damage improperly shock hardened combat systems equipment and render the ship unable to 'fight hurt'. MIL-S-901D currently requires shock qualifying mediumweight equipment to a 'generic' shock excitation on the Navy's Mediumweight Shock Machine (MWSM). This shock excitation is severe, but not always characteristic of the actual ship structure response to an underwater explosion. This study proposes a design modification which will allow using a multi-DOF equipment mounting fixture on the MWSM which can be 'tuned' to simulate shipboard shock characteristics based on modal testing and previous ship shock trial data. Equipment qualified in this manner could be highly relied on to survive in battle. U.S. Navy mediumweight shock machine, Tuned equipment mounting fixture, Equipment mechanical shock qualification.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1993
Accession Number
ADA271962

Entities

People

  • David M. Cox

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Aircrafts
  • Differential Equations
  • Equations
  • Equations Of Motion
  • Load Cells
  • Mathematical Analysis
  • Mathematical Models
  • Mechanical Engineering
  • Mechanical Working
  • Resonant Frequency
  • Shock
  • Simulators
  • Sine Waves
  • Transfer Functions
  • Underwater Explosions
  • Vibration
  • Waveforms

Readers

  • Aerospace Test and Evaluation
  • Chemistry (specifically Chemical Fluorescence)
  • Educational Psychology