Calibration of ductile fracture criteria at negative stress triaxiality

被引：60

作者：

Kubik, Petr ^{[1
]}

Sebek, Frantisek ^{[1
]}

Hulka, Jiri ^{[2
]}

Petruska, Jindrich ^{[1
]}

机构：

[1] Brno Univ Technol, Fac Mech Engn, Inst Solid Mech Mechatron & Biomech, Tech 2896 2, Brno 61669, Czech Republic

[2] Inst Appl Mech, Resslova 972-3, Brno 60200, Czech Republic

来源：

INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES | 2016年 / 108卷

关键词：

Ductile fracture; Stress triaxiality; Carbon steel; Aluminium alloy; Plasticity; Phenomenological criteria; COMBINED TENSION; RUPTURE MECHANISMS; VOID NUCLEATION; FAILURE MODEL; CUTOFF VALUE; SHEAR; GROWTH; DAMAGE; PLASTICITY;

D O I：

10.1016/j.ijmecsci.2016.02.001

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The aluminium alloy 2024-T351 and AISI 1045 carbon steel was examined in scope of uncoupled ductile fracture criteria calibration using newly designed specimen. Its novel geometry allowed to reach extremely low stress triaxialities. The analysis of fracture envelopes was carried out with comparison of each criteria cut-off regions after the calibration where one novel criterion, KHPS, has been introduced. Ductile fracture criteria implemented into the commercial finite element code Abaqus through user subroutine VUMAT were applied to simulation of compression of newly designed cylinder with specific recess to show the crack prediction ability using the element deletion technique. Crack initiation loci together with force responses were compared to experimental observations. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：90 / 103

页数：14

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