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Abstract
This paper investigates the effects of fatigue material data and finite element types on accuracy of residual life assessments under high cycle fatigue conditions. The bending of cross-beam connections is simulated in ANSYS Workbench for three different combinations of structural member shapes: RHS-RHS, RHS-angle and RHS-Channel. The weldments are made of the structural steel grades C350LO and C450LO according to the Australian Standard AS3678. The stress analysis of each weldment having specific profile dimensions under specific cyclic loading is implemented using solid and shell elements considering linear material and geometric response. The stress results are transferred to the fatigue code nCode DesignLife for the residual life prediction. For both variants of FE-mesh, the nominal stress in the weld toes is extracted by splitting the total stress into membrane and bending components and filtering out non-linear component. Considering the effects of mean stress, bending and thickness according to BS7608, failure locations and fatigue life are predicted using the Volvo method and stress integration rules from ASME Boiler & Pressure Vessel Code. Three different pairs of S-N curves (stiff for pure tension and flexible for pure bending) are considered in this work including generic seam weld curves from nCode DesignLife and FE-Fatigue and curves for the Japanese steel JIS G3106- SM490B, which is an equivalent with properties in between C350LO and C450LO. The numerical predictions are compared to the available experimental results highlighting the most preferable fatigue data input and FE-model formulation.
Original language | English |
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Pages (from-to) | 420-432 |
Number of pages | 13 |
Journal | Procedia Engineering |
Volume | 133 |
DOIs | |
Publication status | Published - 29 Dec 2015 |
Event | 6th Fatigue Design conference - FatigueDesign 2015 - CETIM - Technical Centre for Mechanical Industries, Senlis, France Duration: 18 Nov 2015 → 19 Nov 2015 |
Keywords
- beams
- cyclic loading
- fatigue
- finite element analysis
- steel
- welded joints
Fingerprint
Dive into the research topics of 'Comparative study of FE-models and material data for fatigue life assessments of welded thin-walled cross-beam connections'. Together they form a unique fingerprint.Projects
- 1 Finished
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POTF: WeirSPM Pump of the Future PowerFrame
Gorash, Y. (Researcher), Comlekci, T. (Principal Investigator) & MacKenzie, D. (Academic)
1/04/14 → 31/08/14
Project: Knowledge Exchange
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Consideration of weld distortion throughout the identification of fatigue curve parameters using mean stress correction
Gorash, Y., Zhou, X., Comlekci, T., Mackenzie, D. & Bayyouk, J., 30 Jun 2017, FATIGUE 2017: Proceedings of the 7th Engineering Integrity Society International Conference on Durability & Fatigue. Bailey, P., Berto, F., Cawte, E. R., Roberts, P., Whittaker, M. T. & Yates, J. R. (eds.). Rutland, p. 366-377 11 p.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution book
Open AccessFile -
Investigation of fatigue assessments accuracy for beam weldments considering material data input and FE-mode type
Gorash, Y., Comlekci, T. & MacKenzie, D., 2 Jun 2017, In: Journal of Physics: Conference Series. 843, 14 p., 012025.Research output: Contribution to journal › Conference Contribution › peer-review
Open AccessFile4 Citations (Scopus)168 Downloads (Pure) -
Influence of material data input on accuracy of fatigue assessments for beam weldments
Gorash, Y., Comlekci, T. & MacKenzie, D., 25 Oct 2016, (Unpublished) In: Proceedings in Applied Mathematics and Mechanics, PAMM. 16, 1, p. 127-128 2 p., 90857.Research output: Contribution to journal › Article › peer-review
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