Response of perforated composite tubes subjected to axial compressive loading

Sheikh

Hadi

2015

Thin-Walled Structures

This study investigates the influences of various parameters on the behaviour of perforated Glass Fibre Reinforced Polymer (GFRP) tubes under axial compression. A total of 15 GFRP tubes with and without perforations were tested under axial compression. All the GFRP tubes were divided into two groups: 12 tubes with 89 mm outer diameter and 6 mm wall thickness and 3 tubes with 183 mm outer diameter and 8 mm wall thickness. The influences of hole diameter, vertical hole spacing, tube diameter, perforation pattern, transverse hole spacing, and hole reinforcement on the axial compressive behaviour of perforated GFRP tubes were experimentally investigated. Considerable decreases in the axial stiffness, axial critical load, and axial deformation capacity of perforated GFRP tubes have been observed. The hole diameter, tube diameter, perforation pattern, and transverse hole spacing significantly influence the axial compressive behaviour of perforated GFRP tubes. However, the influences of vertical hole spacing and hole reinforcement have been observed not significant. Design-oriented equations for the prediction of the axial stiffness, axial critical load and axial deformation capacity of perforated GFRP tubes under axial compression have been proposed. The proposed equations have been found to be in good agreement with experimental results and can be used for the reliable design of perforated GFRP tubes. Disciplines Engineering | Science and Technology Studies -------------------------------------------------------- Research Highlights 53Perforated GFRP tubes with multiple holes have been tested under axial compression. 54Influences of different parameters on behaviour of perforated GFRP are investigated. 55Design equations are developed to predict the capacity of perforated GFRP tubes.

Section: Axial Load-axial Deformation Behaviour Of Gfrp Tubescontrasting

confidence: 85%

Section: Axial Load-axial Deformation Behaviour Of Gfrp Tubesmentioning

confidence: 93%

Section: Axial Load-axial Deformation Behaviour Of Gfrp Tubesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Behaviour of perforated GFRP tubes under axial compression

Sheikh

Hadi

2015

Thin-Walled Structures

Crashworthiness analysis and multi‐objective optimization of Al/CFRP tubes with induced holes

et al. 2021

Polymer Composites

Reasonable design of induced holes on thin-walled structure is beneficial to enhance the crashworthy performance of the structure. In order to improve the crashworthiness of Al/carbon fiber-reinforced polymer (CFRP) tube, the effect of induced holes on the Al/CFRP thin-walled structure was studied, and the Al/CFRP tube configuration with better overall crashworthiness was obtained by multi-objective optimization design method. First, the quasi-static axial compression tests were carried out on the intact Al/CFRP tube and the Al/CFRP tube with induced holes, and a numerical model validated by the experiment was established. Second, the parameters of the induced hole were studied numerically to explore the influence of the induced holes on the crashworthiness of the Al/CFRP tube. It was found that the diameter and number of the induced hole had a great influence on the crashworthiness and energy absorption (EA) capacity. Finally, the multi-objective optimization was performed to optimize the parameters of the induced holes by integrating the Kriging model technique and the nondominated sorting genetic algorithm (NSGA-II). Compared the optimal design with the intact Al/CFRP tube, the first peak load is reduced by 24.32% and the specific EA is slightly improved by 0.68%.

Study on the axial impact of Al‐CFRP thin‐walled tubes with induced design

Zha

et al. 2022

Polymer Composites

Metal-composite hybrid thin-walled tube has been widely studied due to its excellent lightweight characteristics and crashworthiness. In particular, there are few reports on the research and design of induced metal-composite thinwalled tubes under axial impact. Therefore, the crashworthiness of different induced Al-CFRP tubes was studied in this article by combining experimental and numerical simulation subjected to axial impact. The experimental results showed that the reasonable induced design is helpful to improve the crashworthiness of Al-CFRP hybrid tubes. Based upon the experimental tests and numerical modeling, the crashworthiness of the induced Al/CFRP tube was explored. Thereafter, the influence of structural parameters (CFRP fiber winding Angle, ratio of aluminum tube thickness to CFRP tube thickness) on the crashworthiness of induced Al-CFRP tube was investigated numerally, and the structural parameters were optimized by multi-objective design to obtain the optimal structural design parameters. And then the parametric study was carried out for exploring the effects of the hole diameter and hole number on the crushing behaviors of Al-CFRP hybrid tubes. Finally, a new multi-row induced structure was proposed. All multi-row induced configurations were evaluated by Complex Proportional Assessment Method (COPRAS), and the best induced configuration (C20 tube) was determined. Compared with the single-row induced structure with the best crashworthiness, the SEA, F mean , and CFE of the C20 tube increased by 4.41%, 5.24%, and 10.94%, respectively, and the F max of the C20 tube decreased by 6.59%.