Effect of Cut-Out Location on the Dynamic Behaviour of Plate Frame Structures

Gönenli, Can

doi:10.1007/s42417-022-00476-1

Cited by 4 publications

(2 citation statements)

References 31 publications

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“…Crack damage can change the mechanical properties of the entire structure and affect the safety and applicability of the structure (Jassim et al. , 2013; Gonenli and Das, 2021; Gonenli, 2022; Gonenli et al. , 2022).…”

Section: Introductionmentioning

confidence: 99%

“…Damage to the skeletal structure of a building is a significant problem in practical engineering and primarily occurs in the form of cracks (Matallah et al, 2010;Khiem and Toan, 2014). Crack damage can change the mechanical properties of the entire structure and affect the safety and applicability of the structure (Jassim et al, 2013;Gonenli and Das, 2021;Gonenli, 2022;Gonenli et al, 2022). Studying the dynamic characteristics of a beam structure with multiple cracks and accurately predicting the buckling bearing capacity can effectively guarantee the safety of a structure over its entire life cycle (Yang and Chen, 2008).…”

Section: Introductionmentioning

confidence: 99%

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Adaptive mesh refinement for finite element analysis of elastic buckling disturbance of circularly curved beams due to multiple micro-cracks damage

Wang

2023

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PurposeThis study aimed to overcome the challenging issues involved in providing high-precision eigensolutions. The accurate prediction of the buckling load bearing capacity under different crack damage locations, sizes and numbers, and analysing the influence mechanism of crack damage on buckling instability have become the needs of theoretical research and engineering practice. Accordingly, a finite element method was developed and applied to solve the elastic buckling load and buckling mode of curved beams with crack damage. However, the accuracy of the solution depends on the quality of mesh, and the solution inevitably introduces errors due to mesh. Therefore, the adaptive mesh refinement method can effectively optimise the mesh distribution and obtain high-precision solutions.Design/methodology/approachFor the elastic buckling of circular curved beams with cracks, the section damage defect analogy scheme of a circular arc curved beam crack was established to simulate the crack size (depth), position and number. The h-version finite element mesh adaptive analysis method of the variable section Euler–Bernoulli beam was introduced to solve the elastic buckling problem of circular arc curved beams with crack damage. The optimised mesh and high-precision buckling load and buckling mode solutions satisfying the preset error tolerance were obtained.FindingsThe results of testing typical examples show that (1) the established section damage defect analogy scheme of circular arc curved beam crack can effectively realise the simulation of crack size (depth), position and number. The solution strictly satisfies the preset error tolerance; (2) the non-uniform mesh refinement in the algorithm can be adapted to solve the arbitrary order frequencies and modes of cracked cylindrical shells under the conditions of different ring wave numbers, crack positions and crack depths; and (3) the change in the buckling mode caused by crack damage is applicable to the study of elastic buckling under various curved beam angles and crack damage distribution conditions.Originality/valueThis study can provide a novel strategy for the adaptive mesh refinement for finite element analysis of elastic buckling of circular arc curved beams with crack damage. The adaptive mesh refinement method established in this study is fundamentally different from the conventional finite element method which employs the user experience to densify the meshes near the crack. It can automatically and flexibly generate a set of optimised local meshes by iteratively dividing the fine mesh near the crack, which can ensure the high accuracy of the buckling loads and modes. The micro-crack in curved beams is also characterised by weakening the cross-sectional stiffness to realise the characterisation of locations, depths and distributions of multiple crack damage, which can effectively analyse the disturbance behaviour of different forms of micro-cracks on the dynamic behaviour of beams.

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