Abstract: In the recent decades, multi-pass sheet metal spinning proved to be a critical process for many industrial components such as jet engines, large size pressurized tanks and vessels, but residual stresses and springback in these spun parts remain an alarming problem. This study is intended to provide wider insight into the controlling parameters of these features. Two finite element (FE) simulations were conducted based on explicit code for the spinning process and implicit code for springback and residual stresses prediction. The numerical results were verified and found to be well correlated with the experimental data. Optimum combination between small springback and safety against residual stresses was obtained using low feed ratio and friction coefficient with large number of spinning passes. The common issue is low loading rate. Better control of the final spinning pass can add value to the mechanical and dimensional characteristics of the spun component.

• Publication Date: 24-Apr-2019
• DOI: 10.15224/978-1-63248-170-2-16
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Abstract: This work presents a finite element analysis, using Ansys software, of the O-ring behavior inserted into a groove in a static sealing assembly. The analysis showed that mechanical clearance and friction are key parameters that have an effect on stress distribution. The results of the numerical simulation confirm the classic form of Hertz contact pressure. The appropriate choices of the mechanical seal clearance and the friction coefficient for different pressure conditions improve the reliability of the O-ring.

• Publication Date: 24-Apr-2019
• DOI: 10.15224/978-1-63248-170-2-17
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