On Quantizing Ride Comfort and Allowable Accelerations

Abstract

When the motion of a vehicle includes 'shocks' or impulsive velocity changes, R.M.S. acceleration has no relation to crew comfort or injury. Existing (R.M.S. 'g') methods of ride assessment can show lethal accelerations as being perfectly safe. They are also said to be invalid when the acceleration 'crest factor' (peak/R.M.S.) exceeds 3, which is often the case for high-speed marine vehicles. This paper presents methods of evading these difficulties, using fairly well established biodynamic modelling techniques, and an extension of Allen's 'shock tolerance' concept. Among other advantages, the method 'automates' the assessment of ride quality, so that personal judgments are not involved, and the relative ride quality of different vehicles can be placed on a quantitative basis.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1976
Accession Number
ADA081326

Entities

People

  • Peter R. Payne

Tags

Communities of Interest

  • Biomedical
  • Ground and Sea Platforms
  • Human Systems
  • Space

DTIC Thesaurus Topics

  • Air Force
  • Air Force Facilities
  • Aircrafts
  • Biomedical Research
  • Ejection Seats
  • Engineers
  • Environment
  • Frequency
  • Human Body
  • Mathematical Models
  • Military Aircraft
  • Models
  • Motion Sickness
  • Ride Quality
  • Ship Motion
  • Standards
  • Vehicles

Readers

  • Approximation Theory.
  • Materials Science
  • Robotics and Automation.