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Advisor(s)
Abstract(s)
Beam-like structures are the most common components in real engineering, while single side damage is often encountered. In this study, a numerical analysis of single side damage in a free-free beam is analysed with three different finite element models; namely solid, shell and beam models for demonstrating their performance in simulating real structures. Similar to experiment, damage is introduced into one side of the beam, and natural frequencies are extracted from the simulations and compared with experimental and analytical results. Mode shapes are also analysed with modal assurance criterion. The results from simulations reveal a good performance of the three models in extracting natural frequencies, and solid model performs better than shell while shell model performs better than beam model under intact state. For damaged states, the natural frequencies captured from solid model show more sensitivity to damage severity than shell model and shell model performs similar to the beam model in distinguishing damage. The main contribution of this paper is to perform a comparison between three finite element models and experimental data as well as analytical solutions. The finite element results show a relatively well performance.
Description
Keywords
Beam-like structures Detection Single side damage
Citation
ZHOU, Yun-Lai; [et al] - Single side damage simulations and detection in beam-like structures. In 11th International Conference on Damage Assessment of Structures (DAMAS 2015) (Journal of Physics - Conference Series). ISSN 1742-6588. Vol. 628. 2015, pp. 1-10
Publisher
Iop Publishing Ltd