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Plastic limit loads of nozzles in cylindrical vessels under out-of-plane moment loading
Affiliation:1. Department of Mechanical and Power Engineering, Nanjing University of Technology, Nanjing 210009, People''s Republic of China;2. Center for Joining and Manufacturing Assembly, Marquette University, Milwaukee, WI 53233, USA;1. Dept. of Physics, IIT Bombay, Mumbai, Maharashtra, India;2. Highly Correlated Matter Research Group, Dept. of Physics, University of Johannesburg, Po Box 524, Auckland Park 2006, South Africa;3. Dept. of Metallurgical Engineering & Materials Science, IIT Bombay, Mumbai, Maharashtra, India;4. CNRS/Universite de Versailles-St-Quentin, 78035 Versailles Cedex, France;5. Institute of Physics, Polish Academy of Sciences 02-668 Warsaw, Poland;1. Tampere University of Technology, Optoelectronics Research Centre, Korkeakoulunkatu 3, Tampere FI-33720, Finland;2. Tampere University of Technology, Department of Material Science, Korkeakoulunkatu 6, Tampere FI-33720, Finland;1. School of Chemistry Physics and Mechanical Engineering, Faculty of Science and Engineering, Queensland University of Technology, 2 George Street, Brisbane, QLD 4001, Australia;2. Department of Mechanical and Manufacturing Engineering, Faculty of Engineering, University of Ruhuna, Hapugala, Galle, Sri Lanka;1. Crystal Growth Centre, Anna University, Chennai, India;2. Laser Materials Development and Devices Division, Raja Ramanna Centre for Advanced Technology, Indore, India;3. X-ray Scattering and Crystal Growth Section, Material Science Group, IGCAR, Kalpakkam, Chennai, India;1. Semiconductor Materials and Radiological Technologies (S.M.A.R.T) Laboratory, Kansas State University, Manhattan, KS 66506, USA;2. Bruker AXS Inc, 5465 E. Cheryl Parkway, Madison, WI 53711, USA;3. Department of Agronomy, 2004 Throckmorton Plant Sciences Center, Kansas State University, Manhattan, KS 66502, USA
Abstract:The purpose of this paper is to study the plastic limit moment of nozzles in cylindrical vessels with different d/D ratios under out-of-plane moment loading. Three full size test models were designed and fabricated. A 3D nonlinear finite element numerical simulation was also performed. A twice-elastic-slope plastic moment on the nozzles was obtained approximately by use of load–displacement and load–strain curves. The results show that plastic loads determined by test and numerical simulation methods are in good agreement. The results can serve as a basis for developing an advanced design guideline by limit analysis for cylindrical vessels with a nozzle under external loads.
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