Strength prediction of rotary brace damper using MLR and MARS

Mansouri, I. and Safa, M. and Ibrahim, Z. and Kisi, O. and Tahir, M.M. and Baharom, S. and Azimi, M. (2016) Strength prediction of rotary brace damper using MLR and MARS. Structural Engineering and Mechanics, 60 (3). pp. 471-488. ISSN 1225-4568, DOI

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This study predicts the strength of rotary brace damper by analyzing a new set of probabilistic models using the usual method of multiple linear regressions (MLR) and advanced machine-learning methods of multivariate adaptive regression splines (MARS), Rotary brace damper can be easily assembled with high energy-dissipation capability. To investigate the behavior of this damper in structures, a steel frame is modeled with this device subjected to monotonic and cyclic loading. Several response parameters are considered, and the performance of damper in reducing each response is evaluated. MLR and MARS methods were used to predict the strength of this damper. Displacement was determined to be the most effective parameter of damper strength, whereas the thickness did not exhibit any effect. Adding thickness parameter as inputs to MARS and MLR models did not increase the accuracies of the models in predicting the strength of this damper. The MARS model with a root mean square error (RMSE) of 0.127 and mean absolute error (MAE) of 0.090 performed better than the MLR model with an RMSE of 0.221 and MAE of 0.181.

Item Type: Article
Funders: Ministry of Higher Education, Malaysia, FRGS/2/2013/TK02/UKM/02/1, University Malaya Research Grant (UMRG - Project No. RP004A/13AET), Fundamental Research Grant Scheme, Ministry of Education, Malaysia (FRGS - Project No. FP028/2013A)
Uncontrolled Keywords: Damper strength; MARS; MLR; Nonlinear response; Passive energy dissipation; Rotary brace damper
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 08 Sep 2017 06:45
Last Modified: 08 Sep 2017 06:45

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