This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Seat Comfort as a Function of Occupant Characteristics and Pressure Measurements at the Occupant-Seat Interface
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 16, 2012 by SAE International in United States
Annotation ability available
Seat comfort is a highly subjective attribute and depends on a wide range of factors, but the successful prediction of seat comfort from a group of relevant variables can hold the promise of eliminating the need for time-consuming subjective evaluations during the early stages of seat cushion selection and development. This research presents the subjective seat comfort data of a group of 30 participants using a controlled range of seat foam samples, and attempts to correlate this attribute with a) the anthropometric and demographic characteristics of the participants, b) the objective pressure distribution at the body-seat interface and c) properties of the various foam samples that were used for the test. It was found that: a) the “Indentation Load Deflection” characteristic (or ILD) of the foam was a very significant factor (within the scope of this experiment) contributing to subjective comfort, b) the age of the participants had an effect on comfort ratings as well as the seating pressure variables and it also interacted with seat ILD in influencing the seat comfort ratings, c) the anthropometric measures were not found to be significant factors during this experiment; however, subject weight, standing height and buttock-to-popliteal length contributed in predicting average and maximum pressures on the seat cushion as well as the seat back, d) the repetition of measurements did not have a significant effect on inducing variability in the data, e) the seat back pressure data showed a significant influence over both the seat back comfort and the overall seat comfort, f) several correlations supported the relationship between an evenly distributed pressure distribution (without significant and elevated peaks) and improved subjective comfort rating.
CitationVincent, A., Bhise, V., and Mallick, P., "Seat Comfort as a Function of Occupant Characteristics and Pressure Measurements at the Occupant-Seat Interface," SAE Technical Paper 2012-01-0071, 2012, https://doi.org/10.4271/2012-01-0071.
- Shen, W. Vértiz, A. “Redefining Seat Comfort,” SAE Technical Paper 970597 1997 10.4271/970597
- Lee, J. Ferraiuolo, P. “Seat Comfort,” SAE Technical Paper 930105 1993 10.4271/930105
- Zenk, R. Franz, M. Bubb, H. “Spine Load in the Context of Automotive Seating,” SAE Technical Paper 2007-01-2485 2007 10.4271/2007-01-2485
- Oudenhuijzen, A. Tan, K. Morsch, F. “The Relationship Between Seat Pressure and Comfort,” SAE Technical Paper 2003-01-2213 2003 10.4271/2003-01-2213
- Park, S. Lee, Y. Nahm, Y. Lee, J. et al. “Seating Physical Characteristics and Subjective Comfort:Design Considerations,” SAE Technical Paper 980653 1998 10.4271/980653
- Demontis, S. Giacoletto, M. “Prediction of Car Seat Comfort from Human-Seat Interface Pressure Distribution,” SAE Technical Paper 2002-01-0781 2002 10.4271/2002-01-0781
- Millet, G. Pignède, D. “The Soft & Firm Seat: How Innovation in Automotive Seating Can Improve the User's Well Being,” SAE Technical Paper 2001-01-0383 2001 10.4271/2001-01-0383
- Kolich, M. “Selected Car Seat Studies Dealing with Static Pressure Distribution,” SAE Technical Paper 2004-01-0377 2004 10.4271/2004-01-0377
- Hartung, J. Mergl, C. Bubb, H. “Reliability of Pressure Measurement on Car Seats,” SAE Technical Paper 2004-01-2167 2004 10.4271/2004-01-2167