Vibration Analysis of Cracked Cantilever Beam Using Response Surface Methodology

Pathak, DevDatt; Kushari, Subrata; Maity, Saikat Ranjan; Patnaik, Lokeswar; Kumar, Sunil; Dey, Sudip

doi:10.1007/s42417-022-00713-7

Cited by 1 publication

(1 citation statement)

References 22 publications

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“…Therefore, to ensure the structural safety and quality inspection requirements for construction, it is necessary to develop research methods for the macroscopic vibration characteristics of MIC shear wall structures with hidden damages such as interfacial debonding and internal voids. Existing methods for structural vibration modal analysis include theoretical analysis [5], Finite Element Analysis (FEA) [6], modal testing [7], dynamic substructure techniques [8], computer simulation [9], and frequency spectrum analysis [10]. FEA is a commonly used numerical simulation method suitable for solving the vibration modes of structures with complex configurations and materials.…”

Section: Introductionmentioning

confidence: 99%

Theoretical and simulation study on the vibration modes of shear walls in prefabricated modular construction

Kong,

Wang,

Wang

et al. 2024

J. Phys.: Conf. Ser.

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As prefabricated construction advances, the enhanced informatization and the industrialized modular construction method of MIC (Modular integrated construction) shear walls have been widely applied in real projects. MIC shear walls are generally made up of prefabricated wall modules with varying strength grades, using concrete of various ages, and are combined with cast-in-place concrete. Due to the unique construction requirements of these walls, defects such as interfacial delamination and internal voids might occur, arising from factors like concrete shrinkage and creep, complex interfacial structures, inadequate compaction during vibration, and construction process issues. Since these interfacial defects cannot be visually inspected from the exterior, developing non-destructive testing (NDT) methods specifically for detecting such defects in shear walls becomes an urgent necessity. This paper utilizes a combination of theoretical analysis and numerical simulation to explore the vibration modes of MIC shear walls with hidden defects. First, a theoretical model is proposed for the local vibration modes of MIC shear wall shells with consideration of interfacial delamination defects. Then, a numerical simulation model is established based on MIC shear wall construction and defect features to simulate the vibration behavior accurately. Finally, after examining the theoretical and simulated vibration characteristics of MIC shear walls, a significant theoretical foundation is established for identifying interfacial defects in MIC shear walls.

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