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http://dx.doi.org/10.5762/KAIS.2015.16.4.2356

An Optimization Design of the Insertion Part for Preventing the Screw Thread from Loosening  

Park, Sangkun (Dept. of Mechanical Engineering, Korea National University of Transportation)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.16, no.4, 2015 , pp. 2356-2363 More about this Journal
Abstract
This study deals the optimization design with the simulation based design of a coil spring inserted into the lock nut for preventing the screw thread from loosening at the bolted joint when the high-strength steel bolt with the property class of 10.9 is used and the screw torque of 640 to 800 (Nm) is applied. In this study, structural analysis of assembly composed of bolt, nut and coil spring is carried out to evaluate its safety factors on the basis of the equivalent stress with commercial finite element analysis software. And the design strategy to extract the design improvement from these simulation results is established. An iterative process performed with the proposed design strategy is also proposed for improving the performance of the existing design. At the proposed procedure, the feasible design parameters using response surface method are found, and then these parameters are verified to be optimal or not by comparing with the response values and the simulation results obtained from the feasible parameters.
Keywords
Coil Spring; Loose-proof Nut; Simulation Based Optimization; Structural Analysis;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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