A comparative study between conventional and elevated temperature creep autofrettage

被引：1
|
作者：
Okorokov, Volodymyr [1 ]
Gorash, Yevgen [1 ]
机构：
[1] Univ Strathclyde, Technol & Innovat Ctr, 99 George St, Glasgow G1 1RD, Lanark, Scotland
来源：
2ND INTERNATIONAL CONFERENCE ON STRUCTURAL INTEGRITY, ICSI 2017 | 2017年 / 5卷
关键词：
Crack arrest; Creep autofrettage; Finite Element Analysis; Plasticity; Compressive residual stress; FATIGUE; PLASTICITY;
D O I：
10.1016/j.prostr.2017.07.110
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
This paper presents a comparative study between conventional hydraulic and elevated temperature autofrettage. For modelling of both methods advanced plasticity and creep material models are used. The main governing equations for the models are presented as well. A beneficial influence of compressive residual stresses induced by both methods is demonstrated on a benchmark problem of cross bored block. The effectiveness and applicability of the two methods are estimated by conduction of compressive residual stress analysis and crack arrest modeling. Numerical simulation of the cyclic plasticity and creep problems are carried out by means of FEM in ANSYS Workbench with FORTRAN user-programmable subroutines for material model incorporating custom equations. (C) 2017 The Authors. Published by Elsevier B.V.
引用
收藏
页码：202 / 209
页数：8
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