TY - GEN
T1 - Fatigue design using the structure stress concept for welded metal structures
AU - Rausch, Niclas
AU - Mensinger, Martin
N1 - Publisher Copyright:
© 2020 IABSE Congress, Christchurch 2020: Resilient Technologies for Sustainable Infrastructure - Proceedings. All rights reserved.
PY - 2020
Y1 - 2020
N2 - Due to the progress in FE calculations, local stress increases of welded metal structures can be evaluated more precisely using the structure stress approach (hot-spot stress concept). Inadequate regulations, however, lead to significant uncertainties with this approach. There is a deficiency in instructions on modelling, stress determination and methods for dealing with misalignment and thickness influences. Therefore, difficulties regarding the structure stress concept are pointed out and possible solution strategies are presented. To reduce uncertain influences from modelling, correction factors are specified based on the element approach, extrapolation rule and thickness. A series of static tests is carried out specifically for this purpose. The objective is to develop conclusive regulations for the hot-spot stress concept and evaluate it as an additional normatively anchored method for fatigue safety.
AB - Due to the progress in FE calculations, local stress increases of welded metal structures can be evaluated more precisely using the structure stress approach (hot-spot stress concept). Inadequate regulations, however, lead to significant uncertainties with this approach. There is a deficiency in instructions on modelling, stress determination and methods for dealing with misalignment and thickness influences. Therefore, difficulties regarding the structure stress concept are pointed out and possible solution strategies are presented. To reduce uncertain influences from modelling, correction factors are specified based on the element approach, extrapolation rule and thickness. A series of static tests is carried out specifically for this purpose. The objective is to develop conclusive regulations for the hot-spot stress concept and evaluate it as an additional normatively anchored method for fatigue safety.
KW - Bridge construction
KW - Effect of misalignment and of thickness
KW - FE methods
KW - Fatigue classes
KW - Fatigue design
KW - Hot-Spot Stress Method
KW - S-N curves
KW - Structure Stress Concept
KW - Welded metal structures
UR - http://www.scopus.com/inward/record.url?scp=85104755292&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:85104755292
T3 - IABSE Congress, Christchurch 2020: Resilient Technologies for Sustainable Infrastructure - Proceedings
SP - 1071
EP - 1078
BT - IABSE Congress, Christchurch 2020
A2 - Abu, Anthony
PB - International Association for Bridge and Structural Engineering (IABSE)
T2 - IABSE Congress Christchurch 2020: Resilient Technologies for Sustainable Infrastructure
Y2 - 3 February 2021 through 5 February 2021
ER -
