Concurrent numerical implementation of vibration correlation technique for fast buckling load prediction of cylindrical shells under combined loading conditions

Tian, Kuo; Huang, Lei; Yang, Musen; Chen, Yan; Hao, Peng; Wang, Bo

doi:10.1007/s00366-021-01458-9

Cited by 7 publications

(3 citation statements)

References 62 publications

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“…In past researches, the accuracy of the vibration correlation method has been applied on perfect sheets, panels, and shells, and the effectiveness of the vibration correlation method for defective composite shells has been less investigated. The researches, which conducted in this field, are mostly focused on investigating the effect of delamination on the dynamic characteristics of composite beams [7][8][9][10], numerical modeling to identify the internal delamination by evaluating changes in the modal parameters of composite plates [11], studying the dynamic response and buckling behavior of the load-carrying part in aerial structures [12], investigating the vibrational correlation in Composite sandwich panel with a rhombic mesh core [13], the effect of delamination on the critical buckling load on several composite plates [14], the critical buckling load in a unidirectional carbon-epoxy composite cylinder [15] and presenting a theoretical model for isotropic cylinders in three conditions [16], internal pressure-axial load, external pressure-axial load and torsional momentaxial load. In the studies of this field, which using the vibration correlation method, no research was found about the effect of delamination on the critical buckling load of composite cylinder shells.…”

Section: Introductionmentioning

confidence: 99%

Interlaminar Defect Identification by Vibration Correlation Technique in Filament Winding Cylinder Under Axial Loading

Rahimdadi,

Heydari Beni,

Eskandari Jam

2023

MASM

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Composite shells are widely used in various industries due to their low weight and high strength. Designing these structures involves various engineering analyses, and one of the most important studies is the investigation of the buckling of shells under axial load. The aim of this research is to investigate the vibrational correlation method on composite cylinders with delamination defects. Delamination defects can occur in structures under different conditions and have a significant impact on the strength of the cylinder. Therefore, in this study, different dimensions and quantities of delamination defects in various specimens were examined using the vibrational correlation method. Carbon fibers of type T300 were used as the reinforcement material, and the epoxy resin LY556 was used as the matrix. The hardener and accelerator combined with the resin in this research are HY917 and DY70, respectively. The layer stacking in the specimens was done with angles [55 90 90 55] using the filament winding method, and artificial delamination defects were created between layers 2 and 3 using Teflon sheets. The manufactured specimens were subjected to modal testing under various compressive forces, and then the critical buckling load of the specimens was obtained using the modal testing method. Using numerical modeling software, critical buckling loads and natural frequencies were calculated for various axial compressive loads through linear and nonlinear analysis. These numerical results were compared with experimental results. The vibrational correlation method accurately predicted the critical buckling load in defect-free specimens with a 3% error, but its accuracy was significantly lower in specimens with delamination defects.

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Section: Introductionmentioning

confidence: 99%

Interlaminar Defect Identification by Vibration Correlation Technique in Filament Winding Cylinder Under Axial Loading

Rahimdadi,

Heydari Beni,

Eskandari Jam

2023

MASM

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“…, 2020; Tian et al. , 2020), combined load conditions (Tian et al. , 2021) and variable stiffness composites (Tian et al.…”

Section: Introductionmentioning

confidence: 99%

“…The effectiveness of the prediction has been verified and validated from theoretical basis (Franzoni et al, 2019) and buckling test (Arbelo et al, 2015;Skukis et al, 2017;Shahgholian-Ghahfarokhi et al, 2019, respectively. At the same time, the method has also been extended to conical shells, stiffened shells and other shells (Shahgholian-Ghahfarokhi et al, 2020;Tian et al, 2020), combined load conditions (Tian et al, 2021) and variable stiffness composites (Tian et al, 2022), illustrating its advantages as a fast prediction method. However, to the best of the author's knowledge, there are very few VCT studies on combined thin-walled structures such as conical-cylindrical shells, and there is no relevant study on the application of NVCT to the prediction of axial buckling loads under thermal environments.…”

Section: Introductionmentioning

confidence: 99%

Adaptive step-size numerical vibration correlation technique for buckling prediction of thin-walled shells under axial compression and thermal loads

Huang

Xia

Gao

et al. 2022

MMMS

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PurposeThe purpose of this paper is to propose a numerical prediction method of buckling loads for shell structures under axial compression and thermal loads based on vibration correlation technique (VCT).Design/methodology/approachVCT is a non-destructive test method, and the numerical realization of its experimental process can become a promising buckling load prediction method, namely numerical VCT (NVCT). First, the derivation of the VCT formula for thin-walled structures under combined axial compression and thermal loads is presented. Then, on the basis of typical NVCT, an adaptive step-size NVCT (AS-NVCT) calculation scheme based on an adaptive increment control strategy is proposed. Finally, according to the independence of repeated frequency analysis, a concurrent computing framework of AS-NVCT is established to improve efficiency.FindingsFour analytical examples and one optimization example for imperfect conical-cylindrical shells are carried out. The buckling prediction results for AS-NVCT agree well with the test results, and the efficiency is significantly higher than that of typical numerical buckling methods.Originality/valueThe derivation of the VCT formula for thin-walled shells provides a theoretical basis for NVCT. The adaptive incremental control strategy realizes the adaptive adjustment of the loading step size and the maximum applied load of NVCT with Python script, thus establishing AS-NVCT.

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Buckling-constrained topology optimization using feature-driven optimization method

Zhang

Jiu

Meng

2022

Struct Multidisc Optim

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Concurrent numerical implementation of vibration correlation technique for fast buckling load prediction of cylindrical shells under combined loading conditions

Cited by 7 publications

References 62 publications

Interlaminar Defect Identification by Vibration Correlation Technique in Filament Winding Cylinder Under Axial Loading

Interlaminar Defect Identification by Vibration Correlation Technique in Filament Winding Cylinder Under Axial Loading

Adaptive step-size numerical vibration correlation technique for buckling prediction of thin-walled shells under axial compression and thermal loads

Buckling-constrained topology optimization using feature-driven optimization method

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