FEM Techniques for High Stress Detection in Accelerated Fatigue Simulation

13th International Conference on Motion and Vibration Control; 12th International Conference on Recent Advances in Structural Dynamics

Veltri, M.^1,2

ISVR, University of Southampton, Highfield Campus, SO17 1BJ, United Kingdom^1

MSC Software LTD, Lyon Way, Frimley

GU16 7ER, United Kingdom^2

关键词: Comparative assessment;    Comparison between methods;    Damage prediction;    Durability design;    Dynamic solutions;    Numerical validations;    Structural durability;    Visualization technique;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/744/1/012137/pdf
DOI  :  10.1088/1742-6596/744/1/012137

来源: IOP

【 摘 要 】

This work presents the theory and a numerical validation study in support to a novel method for a priori identification of fatigue critical regions, with the aim to accelerate durability design in large FEM problems. The investigation is placed in the context of modern full-body structural durability analysis, where a computationally intensive dynamic solution could be required to identify areas with potential for fatigue damage initiation. The early detection of fatigue critical areas can drive a simplification of the problem size, leading to sensible improvement in solution time and model handling while allowing processing of the critical areas in higher detail. The proposed technique is applied to a real life industrial case in a comparative assessment with established practices. Synthetic damage prediction quantification and visualization techniques allow for a quick and efficient comparison between methods, outlining potential application benefits and boundaries.