Stress and Fatigue Analysis of Elliptical Head with Multi-Opening in Thermal Environment

Abstract:

The mechanical and thermal response of elliptical head with multi-opening subjected to thermal loads, were carried out using ANSYS software. By dispersing the structure finite elements, the mechanical and fatigue behavior were discussed by APDL language following JB4732, and the result about stress evaluation and fatigue analysis are given, from the result, we can conclude that high first plus second stress and stress concentration may be formed at the intersection between center nozzle and elliptic, as well as between eccentric nozzle and elliptic. The structural discontinuity degree and temperature fluctuation has a big influence on stress concentration, as the most common, opening nozzle of a pressure vessel, the checking of dynamic and static of the structure, especially fatigue-checking are necessary.

• Periodical: Advanced Materials Research (Volume 1046)
• Pages: 161-164
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1046.161
• Online since: October 2014
• Authors: Hou De Su*, Jin Bo Li, Hong Bo Li
• Keywords: Elliptical Head with Multi-Opening, Fatigue Analysis, First Plus Second Stress, Stress Evaluation, Thermal Loads

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