Experimental Study of Autofrettage

被引：3
|
作者：
Lvov, G. I. [1 ]
Okorokov, V. O. [2 ]
机构：
[1] Natl Tech Univ, Kharkiv Polytech Inst, Kharkov, Ukraine
[2] Univ Strathclyde, Glasgow, Lanark, Scotland
来源：
STRENGTH OF MATERIALS | 2018年 / 50卷 / 02期
关键词：
autofrettage; the Bauschinger effect; material damage; nonlinear kinematic hardening;
D O I：
10.1007/s11223-018-9968-7
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The autofrettage of alloy D16 disks is investigated experimentally. The results of the experimental modeling are compared with the numerical calculations. A mathematical model of plasticity is developed based on the performed cyclic push-pull tests of flat specimens. Additional functions of the previously accumulated plastic strain are incorporated into a nonlinear kinematic hardening model. The damage parameter is included according to the effective stress concept to describe a decrease in the elastic modulus during elastic-plastic deformation. Experimentally obtained distribution of residual circumferential and radial strains has shown a good agreement with the numerical results.
引用
收藏
页码：270 / 280
页数：11
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