A prediction model for extremely low cycle fatigue strength of structural steel

Tateishi, Kensuke; Hanji, Takeshi; Minami, Kuniaki

doi:10.1016/j.ijfatigue.2006.08.001

Cited by 101 publications

(64 citation statements)

References 9 publications

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“…13. ELCF strength curves obtained in the former researches 5) are also graphed. Solid line represents the fatigue strength of plain material.…”

Section: (2) Analytical Resultsmentioning

confidence: 99%

“…ELCF strength curves were obtained by a newly developed testing system 12) especially for a large strain field 5) . The results are expressed by Coffin…”

Section: Methodology Of Extremely Low Cycle Fatigue Assessmentmentioning

confidence: 99%

“…A bilinear constitutive material model, which had the yield stress of 380MPa and Young's modulus of 2×10 5 MPa, was adopted. Poisson's ratio was 0.3 and strain-hardening ratio, which is the ratio between the post-yield tangent and the initial elastic tangent, was assumed as 1/100.…”

Section: Extremely Low Cycle Fatigue Assessment Of Steel Columns (1) mentioning

confidence: 99%

“…This type of failure was also observed in the former researches 2), 3) . Recently, several models for an assessment of the ELCF life have been proposed at the material level 4), 5) . For welded joints, fatigue cracks usually initiate from a weld toe.…”

Section: Introductionmentioning

confidence: 99%

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Extremely Low Cycle Fatigue Assessment Method for Un-Stiffened Cantilever Steel Columns

TATEISHI

Chen

Hanji

2008

Structural Eng./Earthquake Eng.

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This paper presents the results of un-stiffened cantilever column subjected to incremental or constant amplitude cyclic loading. The objectives of this study are to investigate the extremely low cycle fatigue life of the column and verify the proposed strain based approach. During the test, fatigue cracks initiated from the weld toe at the corner and propagated along the weld toe. Finally, the column ruptured without a local buckling. The failure of low cycle fatigue induced by large cyclic deformation has been elucidated. In a further step, the crack initiation life was estimated based on the local strain by proposed simple approach. It is indicated that correlation between the test result and the estimated life was good enough.

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“…13. ELCF strength curves obtained in the former researches 5) are also graphed. Solid line represents the fatigue strength of plain material.…”

Section: (2) Analytical Resultsmentioning

confidence: 99%

“…ELCF strength curves were obtained by a newly developed testing system 12) especially for a large strain field 5) . The results are expressed by Coffin…”

Section: Methodology Of Extremely Low Cycle Fatigue Assessmentmentioning

confidence: 99%

Section: Extremely Low Cycle Fatigue Assessment Of Steel Columns (1) mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Extremely Low Cycle Fatigue Assessment Method for Un-Stiffened Cantilever Steel Columns

TATEISHI

Chen

Hanji

2008

Structural Eng./Earthquake Eng.

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“…al. [3] have built a unique bend testing machine for low cycle fatigue tests in order to obtain very large cyclic strains. Their very low cyclic fatigue life results for a structural steel are in agreement with Dusicka et al [2].…”

Section: Introductionmentioning

confidence: 99%

Low-cycle fatigue strength of steel piles

Pétursson¹,

Eriksson²,

Collin³

2010

IABSE Symposium, Venice 2010: Large Structures and Infrastructures for Environmentally Constrained and Urbanised Areas

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In integral abutment bridges clamped abutment piles are in addition to a compressive normal force subjected to bending load cycles from daily and yearly temperature variations. Through experiments with full-scale specimens representing a clamped pile it is shown that a steel pipe pile loaded in bending can withstand several hundred load cycles at strain ranges greater than 6 times the yield strain with almost full load bearing capacity. By means of an example it is shown that by permitting pile strains greater than the yield strain, in contrast to most present design codes, integral abutment bridges can be erected with a span length up to 500m and a prospected service life of 120 years

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Developing high‐performance aluminum alloy buckling‐restrained braces based on series of low‐cycle fatigue tests

Usami

Wang

Funayama

2011

Earthq Engng Struct Dyn

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SUMMARYIn order to enhance the durability of high-performance buckling-restrained braces (BRBs) used in bridge engineering, which are expected to withstand severe earthquakes three times without being replaced, aluminum alloys were employed to manufacture BRBs. A series of low-cycle fatigue tests, including 18 specimens, were conducted to address the low-cycle fatigue strength of the aluminum alloy BRB. Test results of all specimens show that stable hysteretic curves were obtained without overall buckling occurrence. Failure mode of the welded aluminum alloy BRB is obviously affected by the ribs' welding under the variable or constant strain amplitude condition. Therefore, another type of aluminum alloy BRB, the bolt-assembled BRB with or without spot-welded stoppers, is proposed and tested. Results showed that the low-cycle fatigue performance of bolt-assembled BRBs with stoppers improved four to five times compared with welded BRBs. However, the stoppers' spot welding has an adverse effect on the failure mode because the crack, which induced the specimen's failure, initiated from the spot weld toes of the stoppers. Both bolt-assembled BRBs with and without stoppers can meet the cumulative inelastic deformation requirement proposed for high-performance BRBs under the constant strain amplitude, not larger than 2%. In addition, under the variable strain amplitude condition, only the bolt-assembled BRB without stoppers has an excellent cumulative inelastic deformation capacity and sustains two cycles of 2.5% strain amplitude. Finally, recommended Manson-Coffin equations and preliminary cumulative damage formulae for welded and bolt-assembled BRBs are given as the references of the strain-based damage evaluation.

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A prediction model for extremely low cycle fatigue strength of structural steel

Cited by 101 publications

References 9 publications

Extremely Low Cycle Fatigue Assessment Method for Un-Stiffened Cantilever Steel Columns

Extremely Low Cycle Fatigue Assessment Method for Un-Stiffened Cantilever Steel Columns

Low-cycle fatigue strength of steel piles

Developing high‐performance aluminum alloy buckling‐restrained braces based on series of low‐cycle fatigue tests

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