Material-tailored adhesively bonded multilayers: A theoretical analysis

Khan, M.A.; Kumar, S.; Reddy, J. N.

doi:10.1016/j.ijmecsci.2018.08.017

Cited by 23 publications

(11 citation statements)

References 55 publications

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“…Most of works focused on additively manufactured adherend tailoring. Kumar et al [ 23 , 24 ] and Khan et al [ 25 , 26 , 27 ] in their works modelled the stress distributions of joints using functionally graded materials achieved with digital materials and Ubaid et al [ 30 ] experimentally assessed load carrying and toughness improvements due to a modified strain field distribution in the bondline using single lap joints and digital image correlation.…”

Section: Discussionmentioning

confidence: 99%

“…Most of works focused on additively manufactured adherend tailoring. Kumar et al [23,24] and Khan et al [25][26][27] in their works modelled the stress distributions of joints using functionally graded materials achieved with digital materials and Ubaid et al [30] experimentally assessed load carrying Kariz et al [79] investigated the effect of the 3D printing set up on the adherends' morphology for heterogeneous polymer-wood joining. Using FFF equipment and ABS filament, the authors created SLJ adherends, designed according to EN 205:2003 [80], with three different layer heights, 90, 190 and 390 µm.…”

Section: Discussionmentioning

confidence: 99%

“…In a preliminary study, Khan et al [ 27 ] implemented an analytical model to investigate the effect of tailoring the elastic modulus along the full length of SLJs. The aim was to evaluate the effect of introducing the additional design variable of material compliance using the MMAM processes.…”

Section: Joint Design Strategies For Additive Manufacturingmentioning

confidence: 99%

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Review of Tailoring Methods for Joints with Additively Manufactured Adherends and Adhesives

et al. 2020

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This review aims to assess the current modelling and experimental achievements in the design for additive manufacturing of bonded joints, providing a summary of the current state of the art. To limit its scope, the document is focused only on polymeric additive manufacturing processes. As a result, this review paper contains a structured collection of the tailoring methods adopted for additively manufactured adherends and adhesives with the aim of maximizing bonded joint performance. The intent is, setting the state of the art, to produce an overview useful to identify the new opportunities provided by recent progresses in the design for additive manufacturing, additive manufacturing processes and materials’ developments.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Review of Tailoring Methods for Joints with Additively Manufactured Adherends and Adhesives

et al. 2020

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“…The two parameters in the G-R model were peel and shear stresses. The G-R model was the basis of developing many models for different problems, 3,[8][9][10][11][12] all of which ignore the peel stress variations at the adhesive joint interfaces. This defect was resolved later through a novel elastic model developed by Wang and Zhang 13 for the adhesive layer, the three-parameter elastic foundation (3PEF) model.…”

Section: Introductionmentioning

confidence: 99%

Stress analysis of adhesively-bonded single stepped-lap joints based on three-parameter fractional viscoelastic foundation model

Veisytabar

Reza

Shekari

2021

Proceedings of the Institution of Mechanical Engineers, Part L:

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This paper aims to develop a viscoelastic analytical model for adhesively bonded single stepped-lap joints subjected to tensile loading. The adherends are aluminum alloy A6063 and modeled as Timoshenko elastic beams and the adhesive is epoxy type B. A three-parameter fractional viscoelastic foundation (3PFVF) model is proposed to express the governing stresses in the joint and the fractional Zener model is used to model the viscoelastic behavior of the adhesive layer. The proposed 3PFVF model makes it possible to have different peel stresses between the two interfaces of adhesive and adherends. The governing differential equations are derived in the Laplace domain, and then solved and transformed simultaneously in the time domain using the Gaver-Stehfest inverse Laplace transform method. The finite element simulation with ANSYS is applied to validate the proposed method. The results show that a simple fractional viscoelastic model, which has a short differential equation, offers the same results as the classical viscoelastic models, which have higher and more complex differential equations. Moreover, the results show that the maximum shear and peel stresses in the single stepped-lap joints are about 20% less than single-lap joints.

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“…A functionally graded material is basically a material whose properties change in function of the position in space. Several studies evaluated analytically and numerically the effect of functionally graded modulus on adherends, [24][25][26][27] showing that with a graded elasticity of the adherend, the stress concentration could be reduced. However, only few works present experimental results.…”

Section: Introductionmentioning

confidence: 99%

Numerical modelling of multi-material graded joints under shear loading

Reis

Carbas

Marques

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part E:

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Due to environmental concerns, modern transportation solutions demand drastic reductions of fuel consumption and emissions, which can only be achieved with advanced structures using high-performance lightweight materials. For joining these dissimilar materials, adhesive bonding appears as an optimal solution, since mechanical fastening adds weight to the structure, and welding technology is not easily applicable to reinforced plastics and composites. However, one of the major drawbacks associated with bonded joints is the presence of stress concentrations at the overlap ends, especially in single lap joints. In order to reduce these stress concentrations, several techniques have been developed. One of these is the functionally graded adhesive, in which the adhesive properties gradually vary along the overlap length, leading to a more uniform stresses distribution and improving the joint strength. However, the manufacture of an adhesive layer with properties which gradually vary is complex in practice and so is the creation of numerical models that represent these configurations. In the present work, a numerical model for different-graded distribution of adhesive properties along the overlap was developed, using programmed step functions on finite element analysis background in order to discretize and simplify the continuous properties distribution gradient. Cohesive zone modelling was introduced in the numerical model, enabling it to effectively predict graded joint strength. The model was validated with experimental results of functionally graded joints available in the literature. The numerical model developed presents itself as a powerful tool to predict joint strength for functionally graded joints, without imposing large computational demands.

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Material-tailored adhesively bonded multilayers: A theoretical analysis

Cited by 23 publications

References 55 publications

Review of Tailoring Methods for Joints with Additively Manufactured Adherends and Adhesives

Review of Tailoring Methods for Joints with Additively Manufactured Adherends and Adhesives

Stress analysis of adhesively-bonded single stepped-lap joints based on three-parameter fractional viscoelastic foundation model

Numerical modelling of multi-material graded joints under shear loading

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