A good cushion can not only provide the sitter with a high comfort, but also control the distribution of the hip pressure to reduce the incidence of diseases. The purpose of this study is to introduce a computer-aided design (CAD) modeling method of the buttocks-cushion using numerical finite element (FE) simulation to predict the pressure distribution on the buttocks-cushion interface. The buttock and the cushion model geometrics were acquired from a laser scanner, and the CAD software was used to create the solid model. The FE model of a true seated individual was developed using ANSYS software (ANSYS Inc, Canonsburg, PA). The model is divided into two parts, i.e. the cushion model made of foam and the buttock model represented by the pelvis covered with a soft tissue layer. Loading simulations consisted of imposing a vertical force of 520N on the pelvis, corresponding to the weight of the user upper extremity, and then solving iteratively the system.
Citation：
HUANGXuqi, SINGARESekou. Numerical Finite Element Modeling of Custom Car Seat Using Computer Aided Design. Journal of Biomedical Engineering, 2014, 31(1): 64-68. doi: 10.7507/1001-5515.20140013
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SPRIGLE S, CHUNG K C, BRUBAKER C E. Reduction of sitting pressures with custom contoured cushions[J]. J Rehabil Res Dev, 1990, 27(2):135-140.
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Yang C C, HSU Y L. Development of a rapid prototyping system for custom contoured foam cushion using the pressure mapping method[C]//The 36th International Conference on Computers and Industrial Engineering. Taipei:2006.
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RAGAN R, KERNOZEK T W, BIDAR M, et al. Seat-interface pressures on various thicknesses of foam wheelchair cushions:a finite modeling approach[J]. Arch Phys Med Rehabil, 2002, 83(6):872-875.
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- 1. BADER D L. Pressure sores:clinical practice and scientific approach[M]. London:MacMillan, 1990.
- 2. SPRIGLE S, CHUNG K C, BRUBAKER C E. Reduction of sitting pressures with custom contoured cushions[J]. J Rehabil Res Dev, 1990, 27(2):135-140.
- 3. Yang C C, HSU Y L. Development of a rapid prototyping system for custom contoured foam cushion using the pressure mapping method[C]//The 36th International Conference on Computers and Industrial Engineering. Taipei:2006.
- 4. RAGAN R, KERNOZEK T W, BIDAR M, et al. Seat-interface pressures on various thicknesses of foam wheelchair cushions:a finite modeling approach[J]. Arch Phys Med Rehabil, 2002, 83(6):872-875.
