Customized Saddle Design Method Based on Cubic B-Spline Surface

Abstract:

Aimed to the comfort demand of people for the high-end bicycle saddle, a parametric design method of customized saddle is presented based on the Cubic B-spline theory. According to the relationship between Cubic B-spline control points and the saddle shape, the outer contour control points is determined firstly, then all control point positions on the saddle surface are calculated by these outer contour control points, and the parameterized model of the customized saddle is built and its overall surface is designed. On this basis, a more reasonable saddle surface is obtained by adjusting the control points. Finite element analysis (FEA) is carried out on customized saddle and common bicycle saddle respectively. Their stress distributions comparison result shows that customized saddle can minimize pressure to the anterior perineum and ischial tuberosity effectively. These verify that the saddle customized design method is feasible.

• Periodical: Advanced Materials Research (Volumes 945-949)
• Pages: 151-155
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.945-949.151
• Online since: June 2014
• Authors: Qi Jun Yang, Shu Xian Zheng*, Jia Li
• Keywords: Control Points, Cubic B-Spine Surface, Customized Saddle, Parameterized Model

References

[1] Starhost. Moonsaddle specification [ED/OL]. www. saddlemoon. com.

[2] HUANG Haibo, DING Yulan. Ergonomic Bicycle Saddle Design[J]. Journal of Engineering Graphics, 2005, (3): 106-110.

[3] Eadric Bressel, Shantelle Bliss. A field-based approach for examining bicycle seat design effects on seat pressure and perceived stability[J]. Applied Ergonomics, 2009, (3): 472-476.

DOI: 10.1016/j.apergo.2008.10.001

[4] LI Xia, Ergonomics analysis of bicycle saddle[J], Machinery, 2009, 36(2): 56-59.

[5] KUANG Hongmei, YANG Suixian, Bicycle-riding posture analysis and design improvement[J], Journal of Machine Design and Research, 2007, 34(3): 8-11.

[6] LIU Jing, SHI Kanle. Generating Smooth B-Spline Curves Using Control Point Interpolation[J]. Journal of Computer–Aided Design & Computer Graphics, 2011, 23(5): 813-819.