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Method of autofrettage process

Web3 jan. 2024 · Therefore, in the engineering design process, it is not advisable to simulate the autofrettage high-pressure cylinder using the BLH. 3.2 Stress Distribution of Autofrettage Material Model The Bauschinger effect refers to the phenomenon that plastic strain strengthening caused by forward loading during metal plastic processing leads to … WebAutofrettage is a metal working process for introducing the beneficial compressive residual stresses in pressure carrying vessels such as pressure vessels and gun barrels. …

Autofrettage of Open-End Tubes—Pressures, Stresses, Strains, and …

Web[en] The optimum autofrettage pressure and the optimum radius of the elastic-plastic boundary of strain-hardening cylinders in plane strain and plane stress have been studied theoretically and by finite-element modeling. Equivalent von-Mises stress is used as yield criterion. Comparison of the results of the two methods shows good agreement. … Web针对化工生产过程中高压管道连接的密封问题,设计了新型管箍式高压自紧密封结构,建立了三维模型,采用ANSYS Workbench分析软件,计算了在符合实际工况的流体压力作用下自紧密封结构的应力状态,并对结构部件的力学特性和密封性能进行了强度评定.结果表明:自紧密封结构与管道连接处应力最大,其应力 ... my ephraim https://oahuhandyworks.com

An analysis of thermal autofrettage process with heat treatment

Web1 mei 2007 · Autofrettage is a process in which the cylinder is subjected to a certain amount of pre-internal pressure so that its wall becomes partially plastic. The pressure is … Web13 jan. 2024 · The presented article shows an estimation method of optimum autofrettage pressure taking into consideration subsequent cyclic loading. An autofrettage process is used in pressure vessel applications for strength improvement. The process relies on applying massive pressure that causes internal portions of the part to yield plastically, … Web30 jun. 2016 · The thermal autofrettage process is also studied for the thick-walled cylindrical vessels subjected to high thermal gradient with or without pressure and is compared with the hydraulic autofrettage. ... He has published about 71 journal papers, 80 conference papers, and 5 books related to manufacturing and finite element method. official site for harvey nichols

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Method of autofrettage process

Optimum Autofrettage Pressure of Hydrogen Valve Using Finite …

Web1 aug. 2024 · Depending on the loading process, autofrettage may be classified into hydraulic [1], mechanical or swage [2], explosive [3], thermal [4] and rotational [5]. The … Web1 jan. 2024 · There are various types of autofrettage processes, which are classified on the basis of the application of the deforming load. These different techniques of …

Method of autofrettage process

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Web24 nov. 2000 · Autofrettage is used to introduce advantageous residual stresses into pressure vessels. The Bauschinger effect can produce less compressive residual hoop … Web1 jan. 2015 · The schematic diagram of the method is shown in Fig. 1. In order to understand the mechanics of thermal autofrettage , plane stress assumption is employed in Sect. 3. Plane stress assumption is appropriate for a thin circular hollow disk. It may provide reasonable solution for short cylinders as well. Fig. 1.

Web1、 自增强技术对组合式挤压筒 服役特性的影响研究 重庆大学硕士学位论文 (学术学位) 学生姓名：熊乙锟 指导教师：王勇勤 教 授 专 业：机械设计及理论 学科门类：工 学 重庆大学机械工程学院 二 O 一三年五月 The Effect on Usage of Multi-layers Container with Autofrettage Technology A Thesis Submitted to Chongqing ... WebArticle citations More>>. ANSYS (2024) Academic Research Mechanical, Release 19. has been cited by the following article: TITLE: Optimum Autofrettage Pressure of Hydrogen Valve Using Finite Element and Fatigue Analysis AUTHORS: Slawomir Kedziora, Thanh Binh Cao KEYWORDS: Autofrettage, Hydrogen Valve, Finite Element Analysis, …

Webautofrettage process depends on applying massive pressure that causes internal portions of the part to yield plastically, resulting in internal compressive residual stresses when … WebAutofrettage is a technique used on tubular metal components in which enormous amounts of internal pressure causes portions of the part to yield plastically, resulting in internal …

Web1 jan. 2024 · Autofrettage is a metal working process for introducing the beneficial compressive residual stresses in pressure carrying vessels such as pressure vessels …

WebA full model of swage autofrettage was then developed, which was optimised on the basis of accuracy and solution effort. It was then used to investigate the effects of various mandrel and contact parameters on the creation of residual stresses. The model is suitable for use in future optimisation studies of the swage autofrettage procedure. official site for lost passportWebThe process can reduce fatigue concerns in pulsating applications and lets engineers reduce tubing thickness in high-pressure applications without sacrificing strength, life, or safety. The autofrettage method is based on the reciprocal relationship of the plasticized inner zone and the elastically deformed outer zone. The components are placed ... official site for m\u0026sofficial site for natwestWebBased on the type of load, autofrettage can be classified as hydraulic, swage, explosive, thermal, and rotational. In this chapter, the finite element method (FEM) modeling of hydraulic and thermal autofrettage processes is described. First, the various types of autofrettage processes are introduced and briefly reviewed. official site for medicareWeb5 apr. 2011 · The process artificially strains the material with stresses above the elastic limit, taking them just into the plastic region. It is similar to the process of prestressing … my epp contact informationWebautofrettage process to improve the strength of the combined die. 2 Theory and formulation The combined die, which consists of insert die and stress ring, is first … official site for irsWeb– The validation of the FEA method and material models used to simulate the autofrettage process and the residual stresses induced. – Investigate and quantify the hydrostatic pressure effect on strain gages used to measure the residual stresses induced during autofrettage. The initial design of the benchmark pressure vessels was based on FEA official site for momondo