Automated Calculation Plugin for Local Stress in Pressure Vessel Nozzles

The process of analyzing local stress in the pressure vessel nozzle is often cumbersome and subjective, significantly affecting the speed and accuracy of analysis. To address this issue, this study has developed a plugin for calculating local stress in pressure vessel nozzle areas and validated its practicality through case studies. This plugin not only performs stress calculations for conventional nozzle models, 45° inclined nozzle models, and large cutout nozzle models, but also avoids subjective factors during the stress linearization process. Additionally, it offers features like batch analysis and automatic saving. This research outcome provides a convenient and efficient tool for pressure vessel design and structural optimization, with the potential to reduce the complexity and time costs of the analysis process.