Design improvement of a composite-to-steel butt-joint based on finite element analysis

Xu, Lin; Kharghani, N.; Li, Mengzhen; Soares, C. Guedes

doi:10.1016/j.oceaneng.2021.109771

Cited by 8 publications

(4 citation statements)

References 41 publications

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“…Here, 𝑛 is the number of terms in solution and the repeated index 𝑙 does not mean summation here. The nonhomogeneous boundary conditions for 𝜎 𝑧 as given in Equation (10) has been satisfied by superimposing an additional term (𝛿 𝑙5 [𝑞 𝑎 + 𝑧𝑞 𝑑 ]) into the above solution for 𝜎 𝑧 . Where, 𝛿 𝑙5 is Kroneckor's delta, 𝛿 𝑙5 = 1 for 𝑙 = 5 and else 𝛿 𝑙5 = 0, 𝑞 𝑎 = −(𝑞 1 + 𝑞 2 )∕2, and 𝑞 𝑑 = −(𝑞 2 − 𝑞 1 )∕ℎ.…”

Section: The Generalized Multiterm Ekmmentioning

confidence: 99%

“…Hasheminia et al [9] performed the simulation in a finite element package, conducted a series of experiments for metal-composites joints, and investigated the factors affecting the joint failure. Recently, the failure behavior of composite-to-steel butt-joined sandwich panels have been studied experimentally and validated it through FEM [10]. But, the development of analytical closed-form solutions for such problems have its own benifits.…”

Section: Introductionmentioning

confidence: 99%

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2‐D Analytical solutions for the multisegmented panel subjected to arbitrary boundary condition

Kumar

Kumari

2022

Z Angew Math Mech

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A closed-form bending solution of the multisegmented panels is presented for different support conditions. The panels can have multiple no. of segments along the x-axis with varying material properties. The governing equations are formulated using the extended Kantorovich method (EKM) in the mixed-form, and a set of ordinary differential equations have been obtained. The continuity of displacement and stresses are satisfied at the interface of each segment. The panels can have simply-support, clamp, and free types of support conditions. The panel interface at each segment along the x-axis is assumed to be perfectly bonded. In this work, the stress and deformation variations for four types of panel configuration have been studied. Two segmented panels having aluminum and Graphite-Epoxy with equal and unequal segments are considered. A foursegmented Al/SiC panel having gradual material variation is also analyzed. The effect of ply-angles on the longitudinal variables is also studied for the equal segmented Al/GrEp panel. The deflection and stresses are compared with the finite element solution and found in good agreement with the EKM results. The current development will lead to developing the solution for stepped panels, dissimilar plates, and more complex cases used in aerospace applications.

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Section: The Generalized Multiterm Ekmmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

2‐D Analytical solutions for the multisegmented panel subjected to arbitrary boundary condition

Kumar

Kumari

2022

Z Angew Math Mech

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“…The composite beams, plates and shells are the basic units of ship and marine composite structures. For example, composite laminates and sandwich panels have many advantages, such as light weight, corrosion resistance, high strength, high damping, high designability, sound absorption, sound transmission and fatigue resistance [1][2][3][4][5][6][7][8][9][10]. Therefore, the static bending, vibration and buckling characteristics of composite beams, plates, and shells have been widely studied, and these characteristics often require the prediction of the static and dynamic characteristics of composite beams, plates, and shells by experimental, numerical, and theoretical methods.…”

Section: Introductionmentioning

confidence: 99%

A unified framework for equivalent single layer theories of composite beams, plates, and shells: a review

2024

Eng. Solut. Mech. Mar. Struct. Infrastruct.

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This article presents a comprehensive review of the unified framework for the equivalent single layer theories of composite beams, plates and shells. First, the approach to unified displacement fields has two main categories: one is to start from the assumption of linear displacement field variables. And the another is to start from the assumption of transverse strains and transverse displacement variable. In terms of unified shape functions, the shape function is defined as the function that exist in the transverse strain rather than the in-plane displacement variables. Moreover, the basic requirements for the choose of shape functions are also given and analysed in this paper. The unified shape functions are introduced in terms of the several functions and the unified polynomial model. In addition, a construction method for new shear strain shape functions is described in this review. Finally, the current research progress and future prospects are also given.

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“…The test results showed that damage caused by in-plane fatigue loading had little influence on the failure strength of the joint in the axial compression test and a slight reduction of joint stiffness in the bending test. Xu et al (Xu et al, 2021) presented an improved design of a large-scale composite-to-steel joint bonded with a default layer of vinylester resin. The joint design is representative for joining large composite sandwich panels to steel ships and has been subjected to a three-point bending test.…”

Section: Introductionmentioning

confidence: 99%

DIC Based Strain and Damage Analysis of Large Scale Steel to Composite Adhesive Joints Subjected to Tension and Compression Loading

Jaiswal,

Kumar,

Trumper

et al. 2023

China Ocean Eng

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This paper reports an experimental study of the mechanical response to tensile and compressive force of large scale steel to composite joints adhesively bonded with a thin layer of vinylester resin. In one specimen, the length of the reinforcing fibres in contact with the steel substrate has been reduced by saw cutting at both ends of the joint. This damaged specimen and four intact specimens were subjected to quasi-static tensile testing; six specimens were used for compression testing. The strain distribution at the composite surface and at the steel to hardwood connection of the specimen was monitored by digital image correlation (DIC). DIC allowed identifying the onset of damage in the tensile tested joints near the interface of the composite layer and the steel-hardwood connection. Both tensile and compression tested specimens failed due to significant peel strain concentration at the composite near the connection of steel and hardwood. The average strength of a specimen tested in compression was about 66 % higher than the average strength of a specimen tested in tension. The strain concentration zone in the damaged specimen was away from the introduced saw cuts. As a result the damaged and intact tensile specimens showed the same failure strength and stiffness.All specimens failed by adhesive failure between the composite-hardwood interface.

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Design improvement of a composite-to-steel butt-joint based on finite element analysis

Cited by 8 publications

References 41 publications

2‐D Analytical solutions for the multisegmented panel subjected to arbitrary boundary condition

2‐D Analytical solutions for the multisegmented panel subjected to arbitrary boundary condition

A unified framework for equivalent single layer theories of composite beams, plates, and shells: a review

DIC Based Strain and Damage Analysis of Large Scale Steel to Composite Adhesive Joints Subjected to Tension and Compression Loading

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