In this paper, the conical-shaped equivalent model for a bolted joint is considered. In particular, the governing equations for this model are made non-dimensional for the purposes of conducting sensitivity analysis. From this work, a plot of the dimensionless spring-rate of the clamped material is generated for all reasonable designs for which the conical-shaped equivalent model applies. The sensitivity analysis is then used to discuss the relative importance of estimating the proper model and design parameters and a maximum percent of uncertainty in the spring-rate calculation is also presented. It is shown in this discussion that the calculations are quite sensitive to a proper estimation of the cone angle (a model parameter) and that uncertainty within this calculation can range from 5 to 20%.

Issue Section:
Technical Briefs
Keywords:
sensitivity analysis, mechanical engineering, design engineering
Topics:
Bolted joints, Sensitivity analysis, Springs, Uncertainty, Design
1.
Burguete, R. L. 1992, “Methods to Calculate Joint Stiffness: A Review and Classification of Joint Types,” Proceedings of the 11th International Conference on Offshore Mechanics and Arctic Engineering. The American Society of Mechanical Engineers, OMAE—Volume III-B, Materials Engineering. pp. 347–53.
2.
Shigley, J. E., and Mitchell, L. D., 1983, Mechanical Engineering Design, 4th Edition. McGraw Hill, New York.
3.
Dimarogonas, A. D., 2001, Machine Design, A CAD Approach, John Wiley & Sons, Inc. New York.
4.
Norton, R. L., 2000, Machine Design, An Integrated Approach, 2nd Edition, Prentice Hall, Upper Saddle River, New Jersey.
5.
Hamrock, B. J., Jacobson, B., and Schmid, S. R., 1999, Fundamentals of Machine Elements, McGraw Hill, New York.
6.
Juvinall, R. C., and Marshek., K. M., Fundamentals of Machine Component Design, John Wiley & Sons, Inc. New York.
7.
Shigley, J. E., and Mischke, C. R., 2001, Mechanical Engineering Design, 6th Edition, McGraw Hill, New York.
8.
Osgood, C. C., 1979, “Saving Weight on Bolted Joints,” Mach. Des., October 25th.
Copyright © 2003
 by ASME
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