Design rules for autofrettage of an aluminium valve body

被引：10

作者：

Sellen, S. ^{[1
]}

Maas, S. ^{[1
]}

Andreas, T. ^{[2
]}

Plapper, P. ^{[1
]}

Zuerbes, A. ^{[3
]}

Becker, D. ^{[2
]}

机构：

[1] Univ Luxembourg, L-1359 Luxembourg, Luxembourg

[2] Rotarex AS, L-7440 Lintgen, Luxembourg

[3] FH Bingen, D-55411 Bingen Am Rhein, Germany

来源：

FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES | 2016年 / 39卷 / 01期

关键词：

aluminium; autofrettage; fracture; lightweight design; non-linear finite element simulation; residual compressive stress; FATIGUE LIFE PREDICTION; THICK; PRESSURE;

D O I：

10.1111/ffe.12328

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The following paper is intended to improve the fatigue behaviour of a complex aluminium valve geometry under high internal cyclic pressure loading. The autofrettage process helps to increase the fatigue durability and a simple, but efficient design method for this process is deployed. Based on non-linear material's behaviour, finite element simulations of the crack-free geometry help to determine the minimum and maximum autofrettage pressure to be used, without iterative crack simulations, which would require higher computational effort. Material tests under inverse plastifications were performed in order to determine the correct material model. The derived design method was validated with simplified specimens subjected to different autofrettage pressure levels and subsequent cyclic fatigue tests.

引用

页码：68 / 78

页数：11

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