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. (Author)
On Quantizing Ride Comfort and Allowable Accelerations
1976
20 pages
Report
No indication
English
On quantizing ride comfort and allowable accelerations
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