ANALYSIS OF STRESS CONCENTRATION AT OPENING IN PRESSURE VESSEL USING ANOVA

Avinash R.Kharat, V. V. Kulkarni

Abstract: Pressure vessels are used for storage, transportation and application of energy and fluids and also for carrying out reactions and many other purposes. Openings in tanks and pressure vessels are necessary to carry on normal operations. Openings are generally made in both vessel shells as well as heads. Unfortunately, these openings also result in penetrations of the pressure restraining boundaries and are seen as discontinuities. Nozzles represent one of the most common causes for stress concentration in pressure vessels and stress concentration factors can be very useful in pressure vessel design. Finite Element Analysis is very efficient method for determination of stress concentration factors; however reliability of Finite Element Analysis should always be assessed. In this paper The analysis of variance method is used to serve the relation between nozzle size and stress produce in the nozzle area. To reduce the errors in the experimental result the randomize sequence method is used. To test the influence of the both parameters that is opening diameter and internal pressure on each other the randomized test sequencing is generated and experimental test is conducted to investigate the stress distribution near opening area.

Keywords: Pressure, Opening, Stress Concentration Factor, FEA, Stress Distribution

DOI: https://doi.org/10.15623/ijret.2014.0307044