Effect of vibration fatigue on modal properties of single lap adhesive joints

Du, Yu; Shi, Lu

doi:10.1016/j.ijadhadh.2014.01.007

Cited by 37 publications

(12 citation statements)

References 27 publications

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“…They determined resonant frequencies, amplitudes and loss factors. The relationship between vibration and fatigue was tackled by Du and Shi [17] using steel-aluminum single lap joint: they found that when vibration fatigue cycles increase the modal frequencies decrease. They investigated numerically the effect of adhesive Young's modulus and the contact area of bonding.…”

Section: Introductionmentioning

confidence: 99%

Investigation of vibration modes of a double-lap bonded joint

2019

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The authors were concerned in this work in examining the influence of many mechanical and geometrical parameters on the mode shapes of vibration of a double-lap bonded joint. The parameters varied in this study were: adhesive Young's modulus, adhesive and adherents' thicknesses and overlap length. The substrates were made from steel; the adhesive is an epoxy resin. The study was carried out using ANSYS Finite Element software where the first ten modes were extracted. The results obtained from an experimental test conducted by the same workgroup were used to validate the numerical results. Based on the numerical parametric study, the results have shown a dominant influence of the substrates' thickness and the overlap length: the natural frequency increases remarkably with those two parameters. Moreover, the frequencies of the first ten modes were found to be very sensitive in increasing with the increment of either the adherents' thicknesses or the overlap length. On the other hand, the influence of the adhesive Young's modulus was found to be very slight on increasing the natural frequencies for all modes while the adhesive thickness was found to have quite no influence for the first couple of modes, with a slight decrement of frequency for higher modes. Finally, by setting the latter parameters to reference values, a unified parameter function of overlap length and adherent thickness was defined and approximated, and analytical relations for natural frequencies of the first ten modes were established. Keywords Modal analysis • Adhesive • Double-lap joint • Finite element List of symbols a Overlap length (mm) L Length of plates (mm) E Adhesive Young's modulus (GPa) t a Adhesive thickness (mm) t c Central plate's thickness (mm) t e Exterior plates' thickness (mm) W Structure width (mm) ω Natural frequency of the structure (Hz)

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Section: Introductionmentioning

confidence: 99%

Investigation of vibration modes of a double-lap bonded joint

2019

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“…The fatigue crack propagation has been strongly investigated for bonded joints, and its life depends on the extension of the bonded interface, the load type and the load level [14,15]. The fatigue crack may propagate under distinct loading combinations resulting in typified crack propagation systems or crack propagation mode mixities [6,[16][17][18][19][20]. Brussat et al (1977) [21] & Mostovoy & Ripling (1975) [21] were some of the earlier investigators involved in fatigue studies on adhesively bonded joints.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Fatigue Crack Propagation in Adhesively Bonded Joints Using Fatigue Testing, Finite Element Analysis and Neural Networks

Gaur¹,

Prasad²

2019

Applied Engineering Letters

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The current paper presents research aiming at characterizing the fatigue behaviour of adhesively bonded joints. In this study, a new mathematical model to predict fatigue crack propagation rates for adhesively bonded joints has been investigated and presented. The proposed method uses fatigue test data and stiffness data obtained from finite element model of bonded joints. T-peel and single lap shear bonded joints were prepared using aluminium alloy AA5754 and Betamate epoxy adhesive 4601. The fatigue tests were conducted using constant amplitude loading using an R ratio of 0.1 at a frequency of 10 Hz. The FE models used in this work were developed using fracture mechanics tools in Abaqus. The results were post processed to extract energy release rates in form of J Integrals and stress intensity factors. The stiffness results obtained from both experimental testing and numerical studies were combined using appropriate curve fitting models proposed in the literature to estimate the fatigue crack propagation rates and obtained the de-bond curves in the Paris regime for such joints. The crack growth rates were further modelled and validated using neural network technique in MATLAB. ARTICLE HISTORY

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“…A large amount of research has been done in this area (Harris and Fay, 1992;Hadavinia et al, 2003;Quaresimin and Ricotta, 2006;Pang et al, 2013;Vucko et al, 2016). Apart from the experimental studies about the influence of various factors like temperature (Banea and da Silva, 2010), adhesive thickness (Azari et al, 2014), vibration frequency (Du and Shi, 2014) and load ratio (Pirondi and Nicoletto, 2004), a substantial amount of numerical studies also emerges to predict the fatigue life of adhesive joints (Roe and Siegmund, 2003;Turon et al, 2007;Harper and Hallett, 2010;Landry and LaPlante, 2012). Most of them use the cohesive zone model combined with fracture mechanics and damage mechanics to simulate fatigue accumulation.…”

Section: Introductionmentioning

confidence: 99%

Fatigue life prediction of composite material's adhesive joints in automotive applications

Zhang

Tabiei

2017

IJAUTOC

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Composite and adhesive joints are used increasingly in the automotive industry, not only because of the government policy but also their advantages in mechanical properties over traditional materials and joints. An active research area is the fatigue analysis of adhesive joints. In this paper, a methodology to predict the fatigue life of adhesive joint is proposed and implemented into LS-DYNA with the joint modelled using a user-defined cohesive material. Fatigue crack growth rate is used to obtain the fatigue damage accumulation rate in cohesive zone model. Our method is verified by numerical simulations of two commonly used adhesive joints in the automotive industry: single-lap joint and stepped-lap joint. The predicted S-N curve fits well with the experimental data.

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Effect of vibration fatigue on modal properties of single lap adhesive joints

Cited by 37 publications

References 27 publications

Investigation of vibration modes of a double-lap bonded joint

Investigation of vibration modes of a double-lap bonded joint

Investigation of Fatigue Crack Propagation in Adhesively Bonded Joints Using Fatigue Testing, Finite Element Analysis and Neural Networks

Fatigue life prediction of composite material's adhesive joints in automotive applications

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