This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Methods to Assess Jolting and Jarring Events: A Surface Mining Case Study to Evaluate the Jolt-Duration Method
ISSN: 0148-7191, e-ISSN: 2688-3627
Published October 06, 2009 by SAE International in United States
Annotation ability available
When operating a piece of heavy equipment, the equipment operator is exposed to Whole Body Vibration (WBV), with peaks in the acceleration called jolting and jarring. Various published consensus standards exist to analyze overall WBV, but a consensus standard does not exist for describing, detecting, and categorizing the jolting and jarring peaks. During previous research into methods of measuring jolting and jarring, a Root Mean Square (RMS) method was implemented and deployed in jolting and jarring event meters called Shox Boxes (invented by the National Institute for Occupational Safety and Health, NIOSH). The RMS assessment was difficult for end users of the Shox Boxes to utilize for describing and categorizing the peaks. This paper offers a hypothetical standard, the Jolt-Duration (JD) method, based on the simple amplitude and duration of the peaks, as well as the time between peaks. RMS methods, this JD method, and the classic Dynamic Response Index (DRI) method were tested and compared, utilizing data from a surface mining study and a NIOSH software program called Vibration and Acceleration Statistical Analysis (VASA).
CitationMiller, R., "Methods to Assess Jolting and Jarring Events: A Surface Mining Case Study to Evaluate the Jolt-Duration Method," SAE Technical Paper 2009-01-2830, 2009, https://doi.org/10.4271/2009-01-2830.
- Hirsch AH “Man's Response to Shock Motions,” 1964 David Taylor Model Basin, Structural Mechanics Laboratory, Washington D.C., also American Society of Mechanical Engineers (ASME) Paper No. 63-WA-283
- International Organization for Standardization, “ISO 2631-5:2004”, Mechanical vibration and shock - Evaluation of human exposure to whole-body vibration - Part 5: Method for evaluation of vibration containing multiple shocks 2004
- Miller RE Lowe NT Thompson R “A GPS Based System for Minimizing Jolts to Heavy Equipment Operators,” Society of Automotive Engineers, Commercial Vehicle Engineering Congress and Exhibition, paper number 2004-01-2726, Chicago, Illinois 2004 4
- Sandover J “High Acceleration Events in Industrial Exposure to Whole-body Vibration: Summary and Concluding Report,” Contract Research Report 134/1997, Health and Safety Executive: Norwich NR3 1BQ, UK 1997
- Sherman G Adams E Goforth S Jacobs W “Maximum Velocity, A Compendium of the Fastest Things the World has to Offer, and a Celebration of the Technological Breakthroughs that Feed the Rush,” Popular Science, New York 2005 266 2 46
- Eiband AM “Human Tolerance to Rapidly Applied Accelerations: A Summary of the Literature,” NASA Memo 5-19-59E, National Aeronautics and Space Administration, Washington, DC 1959
- Harris CM “Shock and Vibration Handbook,” Fourth Edition McGraw-Hill 1995 44.59 44.62
- Biggs FR Utt WK “Jolting and Jarring Injuries in Surface Mine Haul Trucks,” Proceedings of the Thirty-First Annual Institute on Mining Health, Safety, and Research, Department of Mining and Minerals Engineering, Virginia Tech., Blacksburg, Virginia 2000 169 179
- Heath, Sir Thomas “A History of Greek Mathematics,” 2 Clarendon Press, Oxford (1921) Dover Publications, Inc 1981
- Latham FA “A study in body ballistics: seat ejection,” Proceedings of the Royal Society, Series B 147 1957 121 139
- Payne PR “Personnel Restraint and Support System Dynamics,” Aerospace Medical Research Laboratories, Wright-Patterson Air Force Base, Ohio p. 60
- Allen, G. “The Use of a Spinal Analogue to Compare Human Tolerance to Repeated Shocks with Tolerance to Vibration,” “Models and Analogues for the Evaluation of Human Biodynamic Response, Performance and Protection,” 1979
- Griffin MJ “Handbook of Human Vibration”, Academic Press Inc. San Diego, CA 1990
- Peterson R Pierce E Price B Bass C “Shock Mitigation for the Human on High Speed Craft - Development of an Impact Injury Design Rule,” NATO Applied Vehicle Technology AVT-110 Symposium, Prague, Czech Republic, October 2004