Effect of the stiffener stiffness on the buckling and post-buckling behavior of stiffened composite panels – Experimental investigation

Zhu, Shijie; Yan, Jerry; Zhi, Chen; Tong, Mingbo; Wang, Yuequan

doi:10.1016/j.compstruct.2014.10.021

Cited by 61 publications

(17 citation statements)

References 28 publications

(38 reference statements)

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“…1 In aircraft structures, stiffened composite plates are often subject to tension, compression, bending, shear, and several of combination loadings. The main failure modes are buckling, post-buckling, matrix cracking, fiber damage, and debending.…”

Section: Introductionmentioning

confidence: 99%

Reliability analysis of ultimate compressive strength for stiffened composite panels

Zhao

Liu

Yang

2016

Journal of Reinforced Plastics and Composites

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The prediction and reliability evaluation of ultimate compressive strength of stiffened composite panels are both essential for safe structural design. In this paper, the progressive failure analysis method is utilized to predict ultimate compressive strength of stiffened composite panels by using ABAQUS. Since a large number of ultimate compressive strength must be analyzed in the process of reliability evaluation by using standard reliability methods, the relationship between the buckling load and the ultimate compressive strength is used to establish a new limit state function to reduce the computational efforts. Only one time the ultimate compressive strength is analyzed in the process of reliability evaluation by using the proposed method. The results of numerical examples show that (a) the relative errors between the ultimate compressive strength obtained by using the proposed method and the experimental data are 2.53% and 1.68% for samples A and B, respectively; (b) the reliability results obtained by using the proposed method are very close to the ones obtained by using the classical method, and the ratios of the proposed method to the classical method are only 1.18% and 1.66% for samples A and B in terms of the total computational time.

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Section: Introductionmentioning

confidence: 99%

Reliability analysis of ultimate compressive strength for stiffened composite panels

Zhao

Liu

Yang

2016

Journal of Reinforced Plastics and Composites

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“…Zhu et al [3] investigated the performance of stiffness due to stiffener on the buckling and post-buckling behaviors of composite panels with stiffeners. Equivalent compression stiffness increases as buckling load reduce and it has a minor effect on final failure strength of composites that is made up of stiffened panels.…”

Section: Introductionmentioning

confidence: 99%

Experimental Studies on Effect of Stiffener Configuration on Compressive Strength of Stiffened Panels

Pratha¹,

Tjprc²

2018

IJMPERD

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In this present work, comparative analysis of integrated stiffened panels and the flat plate is studied. Glass Fiber Reinforced Polymer integrated stiffened panels using different stiffener configuration like I stiffener, T stiffener,and Blade stiffener and also a flat plate is fabricated. All the panels are fabricated by hand layup method using aluminium moulds. The reinforcement phase used in this work is made of glass fiber and the matrix phase is primarily epoxy resin. Three panels for each stiffener configuration are fabricated, in total 12 panels are tested for compressive strength using Computerized Universal Testing Machine(UTM) and the results obtained are compared for the best stiffener configuration. The compressive strength analysis of integrated stiffened panels with different stiffener configuration has been studied.

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“…The delamination buckling and post-buckling behaviors of repaired stiffened composite panels have been studied by many researchers over the years. Many of the published works focus on the influences of geometric parameters such as panel thickness 3 and the dimension of stiffeners 4 on the buckling and post-buckling behaviors of stiffened composite panels in axial compression experiments. Riccio et al 5 performed a series of experiments to study the delamination buckling and growth phenomena of composite stiffened panels with initial delamination subjected to compressive loading.…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical analysis of repaired stiffened carbon fiber-reinforced plastics panels under compression

Dong

Zhou

Wang

et al. 2017

Proceedings of the Institution of Mechanical Engineers, Part C:

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Stiffened carbon fiber reinforced plastics (CFRP) panels have been widely used in the aerospace industry due to their high weight-specific mechanical properties but they are also susceptible to impact damage. Therefore, the research on the effects of various defects and repair methods on the damaged stiffened CFRP panels is of paramount importance. This paper presents an experimental and numerical study on the compression behavior of stiffened CFRP panels containing two types of initial defects with three repair methods i.e. mechanical repair, adhesively bonded repair, and scarf patch repair. Quasi-static compression mechanical tests were first performed on physical specimens. The buckling and post-buckling behaviors of the specimens were analyzed through experimental results. The finite element models were developed and validated through experimental results, based on which parametric studies on the influences of various delamination and repairing parameters to the load-carrying capacity of the stiffened CFRP panel were performed. The experimental and numerical results reported in this paper can serve as a general guideline for the selection of the most suitable repair method for various defected stiffened CFRP panels.

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Effect of the stiffener stiffness on the buckling and post-buckling behavior of stiffened composite panels – Experimental investigation

Cited by 61 publications

References 28 publications

Reliability analysis of ultimate compressive strength for stiffened composite panels

Reliability analysis of ultimate compressive strength for stiffened composite panels

Experimental Studies on Effect of Stiffener Configuration on Compressive Strength of Stiffened Panels

Experimental and numerical analysis of repaired stiffened carbon fiber-reinforced plastics panels under compression

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