In developing a composite crush structure for a vehicle's impact system, a comprehensive analysis of material properties, geometric design, …
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2.2 Specimen Manufacturing. Ductile metals and composites are representative isotropic and anisotropic materials, respectively. As depicted in Fig. 1, the different energy absorption principles of ductile metals and composites result in inducing different crushing modes for the same geometry.For ductile metal, a design maximizing plastic deformation should be …
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Results indicated that all reinforced tubes exhibited significantly higher load-bearing capacity, energy absorption (EA) capability, and crushing force efficiency (CFE) …
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The energy absorption and post crushing integrity of hybrid composite tubes were not significantly better than that of the single material tubes. Get full access to this article View all access and purchase options for this article.
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FRP composite materials are known for being tailored to improve material properties based on specific applications with high specific strength and verification of fibre and matrix, and fibre …
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The continuous boron nitride pathway with efficient thermal conductivity endows eco-friendly composite materials with a preeminent thermal conductivity of ... was developed for the conversion of waste thermoset epoxy into high-value-added high thermal conductivity insulating composites. With physical crushing of waste epoxy resin into different ...
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Existing studies have proved that shell-based models can simulate the axial crushing behavior of composite structures using proper modelling strategies, such as the number of shell layers, friction ... Guangdong Hangyu Composite Material Technology Co. Ltd. supplied the fiber/epoxy prepregs used in our study. Fig. 1 presents a diagram of the ...
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Shear thickening material (STM), generally covers shear thickening fluid (STF, also called non-Newtonian fluids) and shear stiffening gel (SSG), possessed excellent protection and unique flexibility, and was extensively used in the modification of protective materials, e.g. filled honeycomb materials [11] and impregnated fabric composites [35].
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1 Predicting the crushing behaviour of composite material using high-fidelity finite element modelling Wei Tan, Brian G. Falzon*, Mark Price School of Mechanical and Aerospace Engineering, Queen's University Belfast, Ashby Building, Belfast, BT9 5AH, UK
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Adv. Composite Mater., Vol. 11, No. 2, pp. 171 – 192 (2002) Ó VSP 2002. Also available online - m Axial and lateral crushing of the lament wound laminated composite curved compound system E. MAHDI 1;¤, A. M. S. HAMOUDA 2 and B. B. SAHARI 2 1 Aerospace Engineering Department, University Putra Malaysia, 43400 UPM, Serdang, Selangor, …
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A numerical model for the crushing simulation of fibre-reinforced composite materials is proposed in this work. The progression of the main cracks is modelled using a new formulation of finite decohesion elements, that allows to correctly account for the energy involved in the cracking process.
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However, these corrugated specimens showed instability during crushing, reflected in poor instantaneous crush force efficiency (iCFE) and the lowest iCFE among the composite tubes, with an average ...
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CZone is a state-of-the-art methodology for simulating the crushing response of composite materials and allows to analyze crushable carbon composite structures that absorb energy during impact. Crushing zone is the area where the composite material may crush against an …
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Mamalis et al. [22,24,25] report that friction mechanisms which are developed between the composite material and the crushing surface and between the various 'new' surfaces which have formed after interlaminar crack growth (adjacent lamina bundles), are also affected by the strain-rate. Furthermore, they report that Crashworthy capability of ...
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To enhance the crushing strength and energy absorption ability, filled structures were developed, which demonstrate desirable mechanical performance under impact loading[12,13,14,15].Recently, Yan et al.[] carried out an out-of-plane uniform compression test, and the results indicated that filling plays the role in reducing the level of elastoplastic …
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This causes a progressive, stable damage behavior typical for composite materials (crushing). Its characteristics are influenced by the profile and trigger geometry, composite layup, composite material properties, and boundary conditions [1], [2]. Crushing of composites has been exploited for automotive racing series and commercial vehicles for ...
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Composite material progressive crushing with micro-fragmentation, associated with high crush energy, is designated as mode-Ι. Progressive failure mode is classified by the progressive end-crushing with splaying of the laminate tube starting at one end of the specimen. This causes the tube to form continuous fronds which spread outwards and ...
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However, due to the complex structure of composite materials, simulating CFRP composite structures requires more advanced constitutive models and it is more time consuming. ... During axial crushing, composite tubes exhibited a splaying crushing mode that can be characterized with transverse tears, inwards and outwards fronds. ...
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Overall, energy absorptions higher than 10 and up to 14 MJ m −3 are reported for strain-rates in the order of 100, furnishing specific energy absorptions (SEA) in the uppermost range of the effective composite material behaviors up to now reported, upon exceptionally high crushing force efficiencies (CFE) at moderate densities.
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For metallic materials, capability of energy absorption mainly comes from plastic deformation of structures, while composites show higher SEA values due to fragmentation and destruction of materials [14].During the crushing process of composite structures, materials fail through continuous fracture propagation and energy dissipation in the loading direction [15], …
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occur during progressive crushing of composite materials. The fixture was designed to isolate the damage modes associated with the frond formation (splaying mode) in composite tubes by testing plate geometries. The fixture can be used in conventional screw-driven or hydraulically actuated load frames and is
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progressive crushing behavior of composite structures. Anisotropic materials are non- linear and by consideration of the parameters introduced, explained and evaluated in this paper, a well-engineered composite structure can be tailored. This paper undergoes evaluation of well-engineered composite structure, followed by different trigger me ...
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In particular, composites undergo a distinct crushing behavior compared to structural components made from conventional materials. While metals typically collapsing through buckling and/or folding, forming the so-called concertina and diamonds pattern, with extensive plastic deformation, composites, undergoing various fracture mechanisms and ...
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The collapse behavior of composite fiber materials in energy-absorbing tubes demonstrates progressive crushing and fracture patterns [13, 14]. Natural fiber-reinforced composites in hybrid tubes offer several advantages, including high impact resistance, a high strength-to-weight ratio, ease of installation, malleability, and lightweight ...
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And so simulation of composite crushing failure can prove difficult using conventional finite element methods. Advanced Simulation Technology CZone technology has been developed to bridge the gap between experimental observations regarding a composite material's ability to absorb energy in an impact scenario and the need to also understand ...
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One of the most significant developments in materials research has been the creation of composite materials and innovative production methods [18], [19], [20], [21].Among these, circular cross-section tubes are the most common and extensively studied due to their ease of manufacture [22].Numerous studies have attempted to investigate the failure …
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Understanding material crushing behaviour is crucial to develop precise and reliable design provisions. ... Standard Test Method for Compressive Properties of Polymer Matrix Composite Materials ...
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The designable structures of composite materials extend the functional applications of composite materials which have been primary materials for lightweight structures. ... The crushing forces of composite tubes shown the similar tendency corresponding to the deformations during axial impacting. However, the peak crushing forces were discovered ...
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In this paper, a three-dimensional damage model is presented, which accurately represents the behaviour of composite laminates under crush loading. Both intralaminar and …
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In order to study the energy absorption characteristics of the open-section thin-walled composite structures with different cross-sections, axial compression tests were carried out at loading speeds of 0.01 m/s, 0.1 m/s, and 1 m/s. Finite element models were built to predict the crushing response and energy absorption behaviors of these open-section structures. The …
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