Experimental-numerical studies on the first-ply failure analysis of real, thin walled laminated angle columns subjected to uniform shortening

Gawryluk, Jarosław; Teter, Andrzej

doi:10.1016/j.compstruct.2021.114046

Cited by 15 publications

(6 citation statements)

References 24 publications

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“…A detailed analysis of the critical state of this type of structure is presented in other works by the author [ 62 ]. Investigations were carried out experimentally, and a numerical analysis was performed [ 63 ]. The finite element method (FEM) was chosen for the numerical analysis.…”

Section: Methodsmentioning

confidence: 99%

Load Eccentricity of Compressed Composite Z-Columns in Non-Linear State

Wysmulski

2022

Materials

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The study investigated short, thin-walled Z-shaped carbon–epoxy laminate columns. Z-columns were compressed while considering the eccentric force realized from the center of gravity of the column section. The study involved performing a nonlinear analysis of the structures with implemented geometric imperfections reflecting the first buckling modes. The nonlinear analysis was performed by using the Tsai–Wu criterion to determine the effort of the composite material. The computations were run until the critical parameter was reached in the Tsai–Wu criterion, allowing for a description of the failure initiation mechanism in the composite material. The first signs of damage to the composite material were determined by using the acoustic emission method. Based on the results, postcritical equilibrium paths of the numerical models were determined. The equilibrium paths were then compared with the experimental characteristics of real structures. The numerical results and experimental findings show a satisfactory agreement. The results confirmed that the numerical models were adequate for estimating the performance of composite structures in the postcritical range, depending on the amplitude of compressive load eccentricity. The research topic undertaken is important because the thin-walled structure design relates to actual loads which, in most cases, differ from the idealized theoretical load conditions.

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Section: Methodsmentioning

confidence: 99%

Load Eccentricity of Compressed Composite Z-Columns in Non-Linear State

Wysmulski

2022

Materials

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“…CFRP is considered to be perfectly elastic until the failure. The Tsai-Hill relations are used as a strength theory [22]. The composite layers are located in planes oriented at 90° to the plane of impact.…”

Section: Problem Statementmentioning

confidence: 99%

Numerical analysis of wave processes under high-speed impact on an object from CFRP

Khudorozhko

Fomina²,

Dumansky³

et al. 2023

E3S Web of Conf.

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Numerical simulation of the impact of an aluminum particle on a composite medium was carried out. Carbon fiber reinforced plastic (CFRP) laminates T300/69 were used as a research object. The behavior of CFRP was analyzed at an impact velocity of 11 km/s and an aluminum particle mass of 1 g. The composite layers were located in planes oriented perpendicular to the direction of reinforcement. The Smoothed-particle hydrodynamics (SPH) method in conjunction with Ansys Autodyn was used for numerical modeling. Since large deformations and fracture of the objects were observed at such high impact velocities, which indicated a violation of the continuity of the material, that makes it incorrect to use of traditional mesh methods. The dependence of the shock wave propagation velocities in CFRP on time was obtained. The minimum thickness of the protective screen made of CFRP was estimated.

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“…The bolted joint composite plates can be simplified into a symmetrical single lap model using the 1D spring-based method 29 and the global stiffness matrix can be obtained by assembling the element stiffness matrices, thus the spring-based model is used to analyze the load distribution is presented in Figure 3.…”

Section: Failure Modesmentioning

confidence: 99%

Analysis of load and stress distribution of a bolted joint composite plate

Yang

Liu

Gong

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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The determination of the load distribution between bolts is a crucial step in predicting the failure of bolted joints. In this paper, the purpose is to investigate the effects of stacking sequence on the load distribution and the stress distribution around hole of a double lapped and three bolted joint composite plate with shearing force. The accuracy and reliability of the finite elements model was verified by the spring method results and test results at first. Subsequently, the load distribution among bolts and the stress distribution around hole of six structural combinations of two stacking sequence composites were studied. Results indicate that the load distribution ratio of the sequential structure is more even than that of the symmetrical structure. And the symmetrical stacking structure can bear greater stress than that of the sequential stacking structure, which is about three times that of sequential stacking structure. As the external loading increases, the hole-edge stress is relatively stable at ±45° layer, while the hole-edge stress of the orthogonal layer is varied and occurs damage failure at 90° around the hole.

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Experimental-numerical studies on the first-ply failure analysis of real, thin walled laminated angle columns subjected to uniform shortening

Cited by 15 publications

References 24 publications

Load Eccentricity of Compressed Composite Z-Columns in Non-Linear State

Load Eccentricity of Compressed Composite Z-Columns in Non-Linear State

Numerical analysis of wave processes under high-speed impact on an object from CFRP

Analysis of load and stress distribution of a bolted joint composite plate

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