Design for ergonomics
- 1. Design for Ergonomics VEHICLE SEAT DESIGN: STATE OF THE ART AND RECENT DEVELOPMENT
- 2. Introduction Seating comfort is a major concern for drivers and other members of the work force who are exposed to extended periods of sitting and its associated side effects. Research literature has shown that some of the main factors that affect seating comfort are seat interface pressure distribution, whole-body vibration and pressure change rate. The different requirements of commercial trucks and personal automobiles have led to separate directions in seat design. This paper describes the research and development for vehicle seats based on literature review of journals, technical reports and thesis.
- 3. Problem Identification According to Occupational Outlook Handbook by United State Department of Labor, the truck drivers frequently work 50 or more hours a week. Assuming four weeks vacation and one more for holidays, which is about 2350 hours driving time per year. Automotive seats, which are in contact with vehicle occupants, play an important role in improving the comfort and work environment of a driver and passengers. The improvement of automotive seating systems, particularly for the driver, has been the subject of intense interest for many years since a driver feels more fatigue than passengers.
- 4. Seating Discomfort Human experience mode Physiology cause Engineering cause Seat/ Environment Pain Circulation occlusion Pressure Cushion stiffness Pain Ischemia Pressure Cushion stiffness Pain Nerve occlusion Pressure Seat contour Discomfort Vibration Vehicle ride Percpiration Heat Material Breathability Perception Visual/ auditory/ tacticle Design/ vibrations Vehicle cost
- 5. Approach Based on Various Engineering Causes VIBRATION APPROACH PRESSURE APPROACH ERGONOMIC APPROACH MEDICAL APPROACH THERMAL COMFORT ARTIFICIAL INTELLIGENCE
- 6. Ergonomic Approach Driver posture is one of the most important issues to be considered in the vehicle design process regarding not only the car and the user but also the experimental conditions. Alem and Strawn:- An energy absorbing truck seat Cho and Yoon:- Biomechanical model of humans on a seat Coelho and Dahlman:- Car seat side support In future studies, research should be concentrated on knowledge improvement of the exposure–response relationship between whole-body vibration and the occurrence of low back disorder.
- 7. Summary From this literature review, it can be seen that the majority of vehicle seats studies are concentrating on vibration, pressure and ergonomics. Besides, these topics, driver “fatigue” also needs to be considered in vehicle seat design. Fatigue may lead to decreased attention, perception, decision-making, vigilance, and reaction time. Future research on seat thermal and humidity comfort can be concentrated on intelligent thermal and humidity control system and evaluate the physiological seat comfort for drivers by using on-the-road experiment testing.
- 8. THANK YOU! Presented By:- Prathamesh J. Phadnis