Dynamic constitutive identification of concrete based on improved dung beetle algorithm to optimize long short-term memory model
- PMID: 38491105
- PMCID: PMC11344044
- DOI: 10.1038/s41598-024-56960-z
Dynamic constitutive identification of concrete based on improved dung beetle algorithm to optimize long short-term memory model
Abstract
In order to improve the accuracy of concrete dynamic principal identification, a concrete dynamic principal identification model based on Improved Dung Beetle Algorithm (IDBO) optimized Long Short-Term Memory (LSTM) network is proposed. Firstly, the apparent stress-strain curves of concrete containing damage evolution were measured by Split Hopkinson Pressure Bar (SHPB) test to decouple and separate the damage and rheology, and this system was modeled by using LSTM network. Secondly, for the problem of low convergence accuracy and easy to fall into local optimum of Dung Beetle Algorithm (DBO), the greedy lens imaging reverse learning initialization population strategy, the embedded curve adaptive weighting factor and the PID control optimal solution perturbation strategy are introduced, and the superiority of IDBO algorithm is proved through the comparison of optimization test with DBO, Harris Hawk Optimization Algorithm, Gray Wolf Algorithm, and Fruit Fly Algorithm and the combination of LSTM is built to construct the IDBO-LSTM dynamic homeostasis identification model. The final results show that the IDBO-LSTM model can recognize the concrete material damage without considering the damage; in the case of considering the damage, the IDBO-LSTM prediction curves basically match the SHPB test curves, which proves the feasibility and excellence of the proposed method.
Keywords: Dung beetle optimization algorithm; Dynamic constitutive model of concrete; Lens imaging reverse learning; Long short-term memory network; PID control.
© 2024. The Author(s).
Conflict of interest statement
The authors declare no competing interests.
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