Method of autofrettage process
WebThe cylindrical filament wound composite overwrapped pressure vessels (COPV) with metal liner has been widely used in spaceflight due to their high strength and low weight. After the autofrettage process, the plastic deformation of the metal liner is constrained by composite winding layers, which introduce depressions to the metal liner that causes … Web1 aug. 2024 · A typical thermal autofrettage process was carried out for a temperature gradient of 330 °C by setting the temperatures of the inner wall and outer wall to 20 °C and 350 °C, respectively. A satisfactory mesh was obtained with 600 elements (60 divisions) along the thickness and (10 divisions) along the length.
Method of autofrettage process
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Web26 mei 2008 · The paper presents a novel concept of an autofrettage compounded tube which has been modelled for the autofrettage process by using a Huang's model (2005) for modelling reverse yielding due to Bauschinger effect. The autofrettage and post autofrettage machining has been validated using finite element methods on ANSYS13. 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 …
Web1 dec. 2015 · Both the processes are well established, but still there are certain disadvantages associated with the processes. The present work proposes a novel method of autofrettage for increasing the pressure carrying capacity of thick-walled cylinders. The method involves only radial temperature gradient in the cylinder for achieving autofrettage. 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 …
Web1 aug. 2024 · Autofrettage is the process to find the residual stress properties of the thick cylinder under the high-pressure scenario. Due to the cost and material … WebBased 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.
Webautofrettage 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 …
Web1 feb. 2024 · Hydraulic autofrettage is a sophisticated metal forming approach adopted to strengthen the large caliber gun barrel in defense industries. During the process, the barrel bore is pressurized by... bsmrw100whWeb1 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 … bsmrstu assignment cover pageWeb30 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. exchange online attributionWeb15 jul. 2024 · The principle of rotational autofrettage is based on inducing plastic deformation in the cylinder at the inner side and at its neighborhood by rotating the cylinder about its own axis at a certain angular velocity and subsequently bringing down it to zero angular velocity. However, the analysis of the process is still in its nascent stage. bsmrw050whWebAutofrettage is performed either by the usage of hydraulic or swage method (Gibson [4]). Autofrettage procedure is based on the establishment of a plastic region with in the … exchange online attributes that can syncWebTitle: Mechanics of Materials in Modern Manufacturing Methods and Processing Techniques . Author(s): Silberschmidt, Vadim V. Publisher: Elsevier City: Amsterdam. Year: 2024. ... 2.1.2 Swage autofrettage -- 2.1.3 Explosive autofrettage -- 2.1.4 Thermal autofrettage -- 2.1.5 Rotational autofrettage 2.2 Numerical modeling of elastic-plastic ... bsmrw21whzWeb2 dec. 2024 · The autofrettage process is faster and cheaper than the built-up method . Still the autofrettage technique can only be implemented for making moderate-size guns … bsms a100 2022 entry studentroom