The Experts below are selected from a list of 87 Experts worldwide ranked by ideXlab platform
Jinyang Zheng - One of the best experts on this subject based on the ideXlab platform.
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Comparison of Ellipsoidal and Equivalent Torispherical Heads Under Internal Pressure: Buckling, Plastic Collapse and Design Rules
Volume 1: Codes and Standards, 2019Co-Authors: Jinyang Zheng, Keming Li, Yehong Yu, Zekun Zhang, Wenzhu Peng, Chaohua Gu, Ping XuAbstract:Abstract Ellipsoidal and torispherical heads, whose geometric shapes are close, are usually used as end closures of internally pressurized Vessels. In Pressure Vessel Codes, for example, ASME BPVC Section VIII, ellipsoidal heads are designed as torispherical heads using geometric equivalency approaches. However, the difference between ellipsoidal and equivalent torispherical heads has not been studied in detail. In this paper, we first investigate the shape deviation between the two types of heads. Then we compare the elastic-plastic behaviors between ellipsoidal and equivalent torispherical heads as well as their failure modes, i.e., buckling and plastic collapse. It is found that ellipsoidal heads have more buckling resistance than equivalent torispherical heads, indicating that the current design rules for buckling failure based on the geometric equivalency approaches result in uneconomical design. Nevertheless, the shape deviation has little effect on plastic collapse Pressures of ellipsoidal and equivalent torispherical heads, showing that the geometric equivalency approaches are applicable for such heads that fail by plastic collapse (bursting). In addition, the experimental and numerical results show that such heads experience geometric strengthening. The FE method considering the effect of geometric strengthening provides a good prediction about plastic collapse (bursting) Pressure. However, the current design equation for bursting does not consider the effect of geometric strengthening, also leading to uneconomical design. Therefore, in order to avoid uneconomical design, we recommend that (1) with respect to the buckling of ellipsoidal heads, a new design equation be proposed rather than implementing the geometric equivalency approaches, and (2) the current design equation for bursting be deleted, and a new design equation, considering the effect of geometric strengthening, be proposed for the bursting of ellipsoidal and torispherical heads subjected to internal Pressure.
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ductile and brittle failure assessment of containment Vessels subjected to internal blast loading
International Journal of Impact Engineering, 2013Co-Authors: Yang Hu, Jinyang ZhengAbstract:Abstract Several major international design methods of explosion containment Vessels (ECVs) refer to the items of Pressure Vessel Codes and standards, where the fracture mechanics analysis of pressurized components should be performed to prevent the occurrence of brittle fracture. However a ductile damage mode in the form of adiabatic shear band (ASB) is frequently found as a failure mode for the containment Vessels subjected to internal blast loading. A rate-dependent failure criterion was proposed to account for ASB propagation, and a finite element analysis of a cylindrical containment Vessel with different size of cracks is performed, where the overPressure caused by detonation was calculated and the propagation of cracks and the final fracture profile are obtained, which shows a good agreement with experimental result. The Failure assessments based on ASB mode and failure assessment diagram (FAD) method were conducted, respectively. It was found that the final fracture mode primarily depends upon the intensity of explosive load as well as loading rate in ASB mode. The assessment result based on FAD method resembles that of ASB at low or intermediate loading rate. However with increment of loading rate, the difference of assessment results based on two methods became obvious, the comparison indicates that for the structures under high strain-rate loading the ASB assessment provides better estimation of crack growth than FAD method does.
M. Joseph - One of the best experts on this subject based on the ideXlab platform.
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Report on task assignment No. 3 for the Waste Package Project; Parts A & B, ASME Pressure Vessel Codes review for waste package application; Part C, Library search for reliability/failure rates data on low temperature low Pressure piping, containers,
1991Co-Authors: M.b. Trabia, M. Kiley, J. Cardle, M. JosephAbstract:The Waste Package Project Research Team, at UNLV, has four general required tasks. Task one is the management, quality assurance, and overview of the research that is performed under the cooperative agreement. Task two is the structural analysis of spent fuel and high level waste. Task three is an American Society of Mechanical Engineers (ASME) Pressure Vessel Code review for waste package application. Finally, task four is waste package labeling. This report includes preliminary information about task three (ASME Pressure Vessel Code review for Waste package Application). The first objective is to compile a list of the ASME Pressure Vessel Code that can be applied to waste package containers design and manufacturing processes. The second objective is to explore the use of these applicable Codes to the preliminary waste package container designs. The final objective is to perform a library search for reliability and/or failure rates data on low Pressure, low temperature, containers and casks with long design lives.
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report on task assignment no 3 for the waste package project parts a b asme Pressure Vessel Codes review for waste package application part c library search for reliability failure rates data on low temperature low Pressure piping containers and cask
Other Information: PBD: Jul 1991, 1991Co-Authors: M.b. Trabia, M. Kiley, J. Cardle, M. JosephAbstract:The Waste Package Project Research Team, at UNLV, has four general required tasks. Task one is the management, quality assurance, and overview of the research that is performed under the cooperative agreement. Task two is the structural analysis of spent fuel and high level waste. Task three is an American Society of Mechanical Engineers (ASME) Pressure Vessel Code review for waste package application. Finally, task four is waste package labeling. This report includes preliminary information about task three (ASME Pressure Vessel Code review for Waste package Application). The first objective is to compile a list of the ASME Pressure Vessel Code that can be applied to waste package containers design and manufacturing processes. The second objective is to explore the use of these applicable Codes to the preliminary waste package container designs. The final objective is to perform a library search for reliability and/or failure rates data on low Pressure, low temperature, containers and casks with long design lives.
M.b. Trabia - One of the best experts on this subject based on the ideXlab platform.
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Report on task assignment No. 3 for the Waste Package Project; Parts A & B, ASME Pressure Vessel Codes review for waste package application; Part C, Library search for reliability/failure rates data on low temperature low Pressure piping, containers,
1991Co-Authors: M.b. Trabia, M. Kiley, J. Cardle, M. JosephAbstract:The Waste Package Project Research Team, at UNLV, has four general required tasks. Task one is the management, quality assurance, and overview of the research that is performed under the cooperative agreement. Task two is the structural analysis of spent fuel and high level waste. Task three is an American Society of Mechanical Engineers (ASME) Pressure Vessel Code review for waste package application. Finally, task four is waste package labeling. This report includes preliminary information about task three (ASME Pressure Vessel Code review for Waste package Application). The first objective is to compile a list of the ASME Pressure Vessel Code that can be applied to waste package containers design and manufacturing processes. The second objective is to explore the use of these applicable Codes to the preliminary waste package container designs. The final objective is to perform a library search for reliability and/or failure rates data on low Pressure, low temperature, containers and casks with long design lives.
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report on task assignment no 3 for the waste package project parts a b asme Pressure Vessel Codes review for waste package application part c library search for reliability failure rates data on low temperature low Pressure piping containers and cask
Other Information: PBD: Jul 1991, 1991Co-Authors: M.b. Trabia, M. Kiley, J. Cardle, M. JosephAbstract:The Waste Package Project Research Team, at UNLV, has four general required tasks. Task one is the management, quality assurance, and overview of the research that is performed under the cooperative agreement. Task two is the structural analysis of spent fuel and high level waste. Task three is an American Society of Mechanical Engineers (ASME) Pressure Vessel Code review for waste package application. Finally, task four is waste package labeling. This report includes preliminary information about task three (ASME Pressure Vessel Code review for Waste package Application). The first objective is to compile a list of the ASME Pressure Vessel Code that can be applied to waste package containers design and manufacturing processes. The second objective is to explore the use of these applicable Codes to the preliminary waste package container designs. The final objective is to perform a library search for reliability and/or failure rates data on low Pressure, low temperature, containers and casks with long design lives.
Robert J Sims - One of the best experts on this subject based on the ideXlab platform.
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engineered Pressure Vessels for marine service using asme section viii division 2 and division 3 Pressure Vessel Codes
ASME USCG 2010 2nd Workshop on Marine Technology and Standards, 2010Co-Authors: Louis E Hayden, Robert J SimsAbstract:The need for more efficient and cost effective design of ship board equipment has never been greater. Pressure Vessels on board ships can account for significant volume and weight and thus affect the overall performance of the Vessel. Classically ship board Pressure Vessels have been designed to ASME Section VIII, Division 1. This code requires Pressure Vessels that are designed using a basic design by rule approach with a 3.5 to 1 design margin on specified minimum tensile strength. In recent years the ASME Standards Committee that is responsible for Section VIII has developed two design Codes, Section VIII, Division 2 Alternative Rules for Construction of Pressure Vessels and Section VIII, Division 3 Alternative Rules for Construction of High Pressure Vessels. These Pressure Vessel design Codes offer lower design margins, an improved design by rule approach for Division 2 and allow or require design by analysis based on the Vessel operating conditions and environment such as cyclic service. Use of these Codes can improve ship board Vessel design by lowering the weight of Vessels while providing a safe reliable Pressure Vessel.Paper published with permission.Compilation Copyright © 2018 ASME
J. Cardle - One of the best experts on this subject based on the ideXlab platform.
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Report on task assignment No. 3 for the Waste Package Project; Parts A & B, ASME Pressure Vessel Codes review for waste package application; Part C, Library search for reliability/failure rates data on low temperature low Pressure piping, containers,
1991Co-Authors: M.b. Trabia, M. Kiley, J. Cardle, M. JosephAbstract:The Waste Package Project Research Team, at UNLV, has four general required tasks. Task one is the management, quality assurance, and overview of the research that is performed under the cooperative agreement. Task two is the structural analysis of spent fuel and high level waste. Task three is an American Society of Mechanical Engineers (ASME) Pressure Vessel Code review for waste package application. Finally, task four is waste package labeling. This report includes preliminary information about task three (ASME Pressure Vessel Code review for Waste package Application). The first objective is to compile a list of the ASME Pressure Vessel Code that can be applied to waste package containers design and manufacturing processes. The second objective is to explore the use of these applicable Codes to the preliminary waste package container designs. The final objective is to perform a library search for reliability and/or failure rates data on low Pressure, low temperature, containers and casks with long design lives.
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report on task assignment no 3 for the waste package project parts a b asme Pressure Vessel Codes review for waste package application part c library search for reliability failure rates data on low temperature low Pressure piping containers and cask
Other Information: PBD: Jul 1991, 1991Co-Authors: M.b. Trabia, M. Kiley, J. Cardle, M. JosephAbstract:The Waste Package Project Research Team, at UNLV, has four general required tasks. Task one is the management, quality assurance, and overview of the research that is performed under the cooperative agreement. Task two is the structural analysis of spent fuel and high level waste. Task three is an American Society of Mechanical Engineers (ASME) Pressure Vessel Code review for waste package application. Finally, task four is waste package labeling. This report includes preliminary information about task three (ASME Pressure Vessel Code review for Waste package Application). The first objective is to compile a list of the ASME Pressure Vessel Code that can be applied to waste package containers design and manufacturing processes. The second objective is to explore the use of these applicable Codes to the preliminary waste package container designs. The final objective is to perform a library search for reliability and/or failure rates data on low Pressure, low temperature, containers and casks with long design lives.