An efficient methodology for fatigue damage assessment of bridge details using modal superposition of stress intensity factors

作者：Albuquerque Carlos^*; Silva Antonio L L; de Jesus Abilio M P; Calcada Rui

来源：International Journal of Fatigue, 2015, 81: 61-77.

DOI：10.1016/j.ijfatigue.2015.07.002

• Fatigue crack propagation
• Modal stress intensity factor
• Computational efficiency
• Submodeling
• Railway bridge

The objective of this paper is to propose an accurate and computationally efficient method for the fatigue assessment of bridge details, using Fracture Mechanics and crack propagation laws. The proposed work-flow benefits from the combination of finite element submodeling techniques and modal superposition method with the new concept of modal stress intensity factors.
The new methodology was applied to the fatigue analysis of a complex bridge under real traffic conditions. The simulation of fatigue crack propagation in a critical detail of the structure was achieved with minimal computer resources and within a short time frame.

• 出版日期2015-12