Ductile fracture model for structural steel under cyclic large strain loading

Published on Mar 1, 2015in Journal of Constructional Steel Research2.938
· DOI :10.1016/J.JCSR.2014.12.002
Liang-Jiu Jia13
Estimated H-index: 13
(Meijo University),
Hitoshi Kuwamura11
Estimated H-index: 11
(UTokyo: University of Tokyo)
Abstract This paper aims to predict ductile fracture of mild steel under cyclic large strain loading (CLSL) using only tensile coupon test results. A micromechanics-based fracture model which adopts void growth model and Miner's rule in incremental form is proposed, where fracture is assumed to occur when a damage index reaches unit. Damage is postulated not to accumulate when stress triaxiality is less than a threshold. To calibrate the fracture model, cyclic experimental and numerical studies on hourglass-type coupons are conducted under various loading histories. Since cyclic plasticity models play an important role on the simulation results, two cyclic plasticity models are employed to carry out the simulation, in which the proposed fracture model is employed. The predicted fracture displacements using either of the plasticity models compare with the experimental results with acceptable accuracy.
📖 Papers frequently viewed together
87 Citations
3,419 Citations
23 Citations
#1Liang-Jiu Jia (UTokyo: University of Tokyo)H-Index: 13
#2Hitoshi Kuwamura (UTokyo: University of Tokyo)H-Index: 8
This paper aims to predict ductile fracture of mild steel under monotonic loading only from the test results of notchless tensile coupons. A simple fracture model based on the concept of a damage index with only one model parameter is proposed to predict ductile fracture of structural steels. The model is based on an idea of a combination of the void growth model and Miner’s rule in incremental form. Moreover, a new method to modify the true stress-true strain data after necking initiates is pro...
87 CitationsSource
#1Liang-Jiu Jia (UTokyo: University of Tokyo)H-Index: 13
#2Hitoshi Kuwamura (UTokyo: University of Tokyo)H-Index: 8
AbstractIn practice, engineers can usually only obtain material properties from monotonic tensile coupon tests. The aim of this paper is to predict cyclic plasticity of mild steel from coupon test results available. First, the theory of metal plasticity is generally reviewed, and selected models are introduced, i.e., Prager’s hardening rule, the Chaboche models, and the Yoshida-Uemori model. Calibration methods of the material parameters of each model are proposed and limitations of the models a...
49 CitationsSource
#1Yu Jiao (TITech: Tokyo Institute of Technology)H-Index: 5
#2Satoshi Yamada (TITech: Tokyo Institute of Technology)H-Index: 8
Last. Yuko Shimada (Chiba University)H-Index: 6
view all 4 authors...
22 CitationsSource
#1Toru Takeuchi (TITech: Tokyo Institute of Technology)H-Index: 12
#2Ryota Matsui (TITech: Tokyo Institute of Technology)H-Index: 9
Tubular-section members are commonly used as seismic-resistant braces because they have a higher moment of inertia than open cross sections of equivalent area. However, the cumulative cyclic deformation capacity of tubular sections after buckling is smaller than that of open sections, such as H-shaped sections, because fracture is initiated by local buckling of circular tubular sections. To evaluate the seismic performance of such diagonal braces, it is essential to predict the cumulative cyclic...
21 CitationsSource
#1B.V. FellH-Index: 7
#2Amit KanvindeH-Index: 19
Last. Andrew T. MyersH-Index: 16
view all 4 authors...
Results from 18 large-scale tests of steel bracing members are presented to examine their inelastic buckling and fracture behavior as related to the seismic design of concentrically braced frames. The brace specimens include square hollow structural shapes (HSS), pipe, and wide-flange sections. The effect of various parameters, including width–thickness and slenderness ratios, cross-section shape, loading history, loading rate, and grout fill on the performance of these braces is investigated. A...
106 CitationsSource
#1Amit Kanvinde (UC Davis: University of California, Davis)H-Index: 19
#2Gregory G. Deierlein (UC Davis: University of California, Davis)H-Index: 43
Tests and finite-element analyses of blunt notch and dogbone specimens are presented to demonstrate the application and validation of the cyclic void growth model (CVGM) to evaluate the initiation of ductile fracture under cyclic loading in steel structures. Modeling concepts and procedures for characterizing the CVGM material parameters using notched bar tests are described. Accuracy of the model is validated through a series of cyclic tests of 14 blunt notch compact fracture specimens and four...
33 CitationsSource
#1Ken Nahshon (Harvard University)H-Index: 6
#2John W. Hutchinson (Harvard University)H-Index: 148
Recent experimental evidence points to limitations in characterizing the critical strain in ductile fracture solely on the basis of stress triaxiality. A second measure of stress state, such as the Lode parameter, is required to discriminate between axisymmetric and shear-dominated stress states. This is brought into the sharpest relief by the fact that many structural metals have a fracture strain in shear, at zero stress triaxiality, that can be well below fracture strains under axisymmetric s...
693 CitationsSource
#1Amit Kanvinde (UC Davis: University of California, Davis)H-Index: 19
#2Gregory G. Deierlein (UC Davis: University of California, Davis)H-Index: 43
A new model is proposed to simulate ductile fracture initiation due to large amplitude cyclic straining in structural steels, which is often the governing limit state in steel structures subjected to earthquakes. Termed the cyclic void growth model (CVGM), the proposed technique is an extension to previously published models that simulate ductile fracture caused by void growth and coalescence under monotonic loading. The CVGM aims to capture ultra low cycle fatigue (ductile fracture) behavior, w...
151 CitationsSource
The above title and authorship belong to an internal Company Report that was issued in December 1966 [1] and is continually referred to, but it has never been published in the open literature. The report is reproduced in full below as a paper, but Materials at High Temperatures has first taken the opportunity to explore the background to what is regarded by many in the field as a classic work. For reasons discussed below, the names of authors have been reversed in this published version.
1,065 CitationsSource
#1Amit Kanvinde (UC Davis: University of California, Davis)H-Index: 19
#2Gregory G. Deierlein (UC Davis: University of California, Davis)H-Index: 43
Material tests and analyses are presented to investigate the accuracy of two micromechanics-based continuum criteria for predicting ductile crack initiation in low-carbon steels, which are representative of mild steels used in civil engineering construction. Referred to as the stress modified critical strain (SMCS) model and the void growth model (VGM), both criteria integrate plastic strains and triaxial stresses to predict crack initiation associated with the mechanisms of void initiation, gro...
179 CitationsSource
Cited By48
#1Ahmed A. Osman (Cairo University)H-Index: 2
#2Sherif A. Mourad (Cairo University)H-Index: 8
In this study, numerical models were developed to predict the behavior of steel extended end-plate moment connections subjected to static and blast-like loading. Two types of extended end-plate connections were considered, stiffened, and unstiffened, with pretensioned bolts. The models were verified by comparing the results with published experimental data. The models were used to compute the moment-rotation curves for the connection under static loading, and then under different blast durations...
Abstract null null In a new type of Reduced Beam Section (RBS) connection, called the corrugated web RBS connection, the flat web of the beam in the section near the column face is replaced by corrugated plates so as to reduce the flexural strength of the beam and ensure hinge formation in this section. The use of the corrugated web in the reduced section zone increases the lateral-torsional stability of the beam and reduces its flange width-to-thickness ratio. This paper presents two new types ...
Abstract null null The seismic performance of eccentrically braced frames (EBFs) is strongly influenced by the length of their links. In these frames, short links undergo shear yielding, long links experience flexural yielding, and intermediate links go through a combination of shear and flexural yielding. Hence, shorter links have a greater inelastic rotation capacity than longer links. However, having the option to use longer links is architecturally preferable as it allows the designer to pla...
1 CitationsSource
Abstract The ductile crack initiation observed in structural steels subjected to ultra-low cycle fatigue (ULCF) loading often leads to the catastrophic failure in steel structures. In the existing ULCF damage models, there is always a contradiction between the cost of model parameters calibration and prediction accuracy. In order to solve the contradiction, a one-parameter model for ULCF damage evaluation of structural steels was proposed based on the concept that ULCF damage consists of ductile...
1 CitationsSource
#1Atri Nath (IIT-KGP: Indian Institute of Technology Kharagpur)H-Index: 2
#2Sudhirkumar V. Barai (IIT-KGP: Indian Institute of Technology Kharagpur)H-Index: 22
Last. Kalyan Kumar Ray (IIT-KGP: Indian Institute of Technology Kharagpur)H-Index: 35
view all 3 authors...
Abstract Experimental investigations have been conducted on the cyclic-plastic response of a structural mild steel (Grade YST210) under varying strain amplitudes (ea) under symmetric strain-controlled cycling. The results on the investigated YST210 steel and the reported results on four similar grades of steels (E250A, Q235, SS400, and GR345 steel) under symmetric strain-controlled cyclic loading are analyzed using a suggested approach based on Chaboche isotopic-kinematic hardening (CIKH) model....
#1Xuewei Huang (Zhengzhou University)H-Index: 1
#2Chenchen Wei (Zhengzhou University)
Last. Jianzhou Ge (Zhengzhou University)H-Index: 1
view all 5 authors...
Abstract Steel tubular joints in steel structures may suffer from ultra low cycle fatigue fracture under strong seismic action. This paper aims to investigate the ultra low cycle fatigue behavior of X steel tubular joints with CHS braces to SHS chord by means of experiments and numerical simulation. Firstly, three X-joints with different constructions were tested. The experimental results indicate that the X-joint with fillet weld or penetration weld exhibits punching failure mode, and the weld ...
#1Tao Wang (ECUST: East China University of Science and Technology)H-Index: 1
#2Jian-Feng Wen (ECUST: East China University of Science and Technology)H-Index: 10
Last. Shan-Tung Tu (ECUST: East China University of Science and Technology)H-Index: 45
view all 6 authors...
Abstract Ductile failure under ultra-low cycle fatigue (ULCF) loading is often the limit service state of a nuclear structure. In the paper, ULCF tests for a C-Mn-Si steel are carried out. It is observed that the fracture displacement decreases as the number of fatigue cycles increases. An energy-based model, which considers the effects of both stress triaxiality and cyclic loading on the critical fracture strain energy, is proposed. Coupled with the new model, finite element analyses of the rou...
1 CitationsSource
The seismic performance of an H-shaped core buckling-restrained brace (HBRB) is evaluated through detailed finite element analysis. The numerical model is validated against available experimental d...
2 CitationsSource
Abstract In this study, a straightforward method for evaluating damage and ultra-low-cycle fatigue (ULCF) life of high-rise steel frame structures under strong seismic loading at the material level was newly proposed on basis of inter-story drift measurement and mesoscopic fracture models. A mesoscopic ULCF model for cyclic loading was improved by considering both effects of strain amplitude and loading sequence, which was implemented into finite element software. Since elastic loading and unloa...
2 CitationsSource