Fatigue strength modelling of high-performance welds using local approaches

Tutkimustuotos: Artikkeli kirjassa/konferenssijulkaisussavertaisarvioitu

Standard

Fatigue strength modelling of high-performance welds using local approaches. / Remes, Heikki; Jelovica, Jasmin; Romanoff, Jani; Lehto, Pauli; Liinalampi, Sami.

Proceedings of the 13th International Symposium on PRActical Design of Ships and Other Floating Structures (PRADS' 2016). Technical University of Denmark, 2016.

Tutkimustuotos: Artikkeli kirjassa/konferenssijulkaisussavertaisarvioitu

Harvard

Remes, H, Jelovica, J, Romanoff, J, Lehto, P & Liinalampi, S 2016, Fatigue strength modelling of high-performance welds using local approaches. julkaisussa Proceedings of the 13th International Symposium on PRActical Design of Ships and Other Floating Structures (PRADS' 2016). Technical University of Denmark, Copenhagen, Tanska, 04/09/2016.

APA

Remes, H., Jelovica, J., Romanoff, J., Lehto, P., & Liinalampi, S. (2016). Fatigue strength modelling of high-performance welds using local approaches. teoksessa Proceedings of the 13th International Symposium on PRActical Design of Ships and Other Floating Structures (PRADS' 2016) Technical University of Denmark.

Vancouver

Remes H, Jelovica J, Romanoff J, Lehto P, Liinalampi S. Fatigue strength modelling of high-performance welds using local approaches. julkaisussa Proceedings of the 13th International Symposium on PRActical Design of Ships and Other Floating Structures (PRADS' 2016). Technical University of Denmark. 2016

Author

Remes, Heikki ; Jelovica, Jasmin ; Romanoff, Jani ; Lehto, Pauli ; Liinalampi, Sami. / Fatigue strength modelling of high-performance welds using local approaches. Proceedings of the 13th International Symposium on PRActical Design of Ships and Other Floating Structures (PRADS' 2016). Technical University of Denmark, 2016.

Bibtex - Lataa

@inproceedings{497eb9843b764f3384e22e743e8e059c,
title = "Fatigue strength modelling of high-performance welds using local approaches",
abstract = "This paper investigates the effect of weld geometry on the fatigue strength of butt joints. The influence of weld notch shape and weld flank angle is studied with finite element analysis and three different local approaches. The applied approaches are notch stress approach, linear elastic-fracture mechanics (LEFM), and recently published strain-based crack growth approach. In this strain-based approach, the fatigue damage process is modelled as a sequence of repeated crack initiation processes. This enables to consider the influence of short crack initiation and growth. The numerical simulations are compared to fatigue test results. The study reveals that for high-performance welds with favorable notch geometry, the macro crack initiation period becomes significant causing inaccuracies with notch stress approach and LEFM. For a normal-quality weld with the undercut depth of 0.1 mm, the macro crack propagation dominates the total fatigue life. In this case, all approaches show somewhat similar estimation on the fatigue strength.",
keywords = "fatigue strenght, flank angle, linar elastic fracture mechanics, notch stress approach, strain-based crack growth approach, undercut",
author = "Heikki Remes and Jasmin Jelovica and Jani Romanoff and Pauli Lehto and Sami Liinalampi",
year = "2016",
language = "English",
booktitle = "Proceedings of the 13th International Symposium on PRActical Design of Ships and Other Floating Structures (PRADS' 2016)",
publisher = "Technical University of Denmark",

}

RIS - Lataa

TY - GEN

T1 - Fatigue strength modelling of high-performance welds using local approaches

AU - Remes, Heikki

AU - Jelovica, Jasmin

AU - Romanoff, Jani

AU - Lehto, Pauli

AU - Liinalampi, Sami

PY - 2016

Y1 - 2016

N2 - This paper investigates the effect of weld geometry on the fatigue strength of butt joints. The influence of weld notch shape and weld flank angle is studied with finite element analysis and three different local approaches. The applied approaches are notch stress approach, linear elastic-fracture mechanics (LEFM), and recently published strain-based crack growth approach. In this strain-based approach, the fatigue damage process is modelled as a sequence of repeated crack initiation processes. This enables to consider the influence of short crack initiation and growth. The numerical simulations are compared to fatigue test results. The study reveals that for high-performance welds with favorable notch geometry, the macro crack initiation period becomes significant causing inaccuracies with notch stress approach and LEFM. For a normal-quality weld with the undercut depth of 0.1 mm, the macro crack propagation dominates the total fatigue life. In this case, all approaches show somewhat similar estimation on the fatigue strength.

AB - This paper investigates the effect of weld geometry on the fatigue strength of butt joints. The influence of weld notch shape and weld flank angle is studied with finite element analysis and three different local approaches. The applied approaches are notch stress approach, linear elastic-fracture mechanics (LEFM), and recently published strain-based crack growth approach. In this strain-based approach, the fatigue damage process is modelled as a sequence of repeated crack initiation processes. This enables to consider the influence of short crack initiation and growth. The numerical simulations are compared to fatigue test results. The study reveals that for high-performance welds with favorable notch geometry, the macro crack initiation period becomes significant causing inaccuracies with notch stress approach and LEFM. For a normal-quality weld with the undercut depth of 0.1 mm, the macro crack propagation dominates the total fatigue life. In this case, all approaches show somewhat similar estimation on the fatigue strength.

KW - fatigue strenght

KW - flank angle

KW - linar elastic fracture mechanics

KW - notch stress approach

KW - strain-based crack growth approach

KW - undercut

UR - http://orbit.dtu.dk/files/127664364/PRADS_2016_Proceedings_ORBIT.pdf

UR - http://www.scopus.com/inward/record.url?scp=85026443599&partnerID=8YFLogxK

M3 - Conference contribution

BT - Proceedings of the 13th International Symposium on PRActical Design of Ships and Other Floating Structures (PRADS' 2016)

PB - Technical University of Denmark

ER -

ID: 9591574