Effects of the Measured Noise on the Failure Mechanism of Pre-Cracked Concrete Specimens Under the Loading Modes I, II, III, and IV

• Published in: Strength of materials Vol. 53; no. 6; pp. 938 - 949
• Main Authors: Fu, J., Haeri, H., Yavari, M. D., Sarfarazi, V., Marji, M. F.
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.11.2021; Springer
• Subjects: Algorithms; Analysis; Characterization and Evaluation of Materials; Chemistry and Materials Science; Classical Mechanics; Concrete; Materials Science; Solid Mechanics; convergence diagram; measured noise; damage location; MATLAB; cubic pre-cracked concrete specimen
• ISSN: 0039-2316; 1573-9325
• DOI: 10.1007/s11223-022-00362-x

The diagrams for damage location and convergence curves based on the differential evolutionary algorithms under the loading modes I, II, III, and IV are studied for the pre-cracked concrete specimens with a center crack of different inclination angles and considering the noise effect. The numerical results for the modeled specimens showed that the measured noise may have significant effects on these diagrams, especially when the center cracks are of high inclination angles (greater than 45°) with respect to the applied loading direction. It was also shown that the measured noise might distort the accelerations in the damaged concrete specimens, which highlighted the effectiveness of the present algorithm provided via MATLAB. In this study, an algorithm is established in the MATLAB software to numerically simulate the noise effect on the damage location and convergence diagrams for the cubic concrete specimens based on the differential evolutionary algorithm. The particle flow code for two-dimensional (PFC2D) problems was used to simulate crack propagation paths in the numerically failed pre-cracked concrete specimens.