Parametric analysis of composite sinusoidal specimens under quasi-static crushing - Volume 122 Issue 1254. 22 August 2024: Due to technical disruption, we are experiencing some delays to publication. We are working to restore services and apologise for the inconvenience. ... Journal of Composite Materials, Vol. 53, Issue. 16, …
Thermoplastic composite materials are well suited for the development and design of energy absorbing lightweight structures. In this work, the damage initiation and failure phenomena of half-circle and full-circle tubular specimens, made of a novel mat reinforced thermoplastic composite material under axial dynamic crushing is …
Composite materials are recognized as being effi- ... occur during progressive crushing of composite tubes. Also plates can be easily produced with consistently high quality. The CCF specimen ...
Since the late 1970s, numerous studies have been published on the failure of fibre-reinforced plastic (FRP) materials when subjected to crushing. 1 Yet, this type of damage behaviour remains of interest to academia and industry. 2–7 This is due to the high specific energy absorption (SEA) capacities and the complex interaction of mechanisms …
To investigate the crashworthiness of hybrid composite tubes, two types of aluminum-composite hybrid tubes and one type of pure braided composite tubes were subjected to impact testing. The two types of hybrid tubes were made from aluminum inner tubes with either carbon/epoxy prepreg outer tubes or outer tubes of braided carbon …
The composite materials under consideration are namely, carbon/epoxy, graphite/epoxy, glass/epoxy, kevlar/epoxy and boron/epoxy with the lay-up of [0/90/45/90/0] for all laminates with thickness of 2 mm per lamina which gives us the total thickness of 10 mm. Out of these materials, boron/epoxy composite was observed to have higher …
This paper is devoted to examine the crushing behaviour of axially crushed composite corrugated tubes. Two types of composites were tested, namely, carbon fibre/epoxy in a filament form and glass ...
Two-layer finite element model for axial crushing of composite tube. ... c = ∫ 0 L c SCS ds L c = SCS mean = P mean ρ A where E total, M c, L c are the total energy absorbed during crush, the mass of the crushed material, and the final crushing length, respectively. The crushing load efficiency is defined by: (8) ...
Crushing response. 1. Introduction. Composites exhibit a significantly higher energy absorption capacity per unit weight than metallic structures. Therefore, the use of …
A mesoscale composite damage model, with new non-linear shear constitutive laws, which combines a range of novel techniques to accurately capture the material response under crushing, is presented.
Furthermore, an analytical model for the crushing behavior of the cylindrical composite shell filled with and honeycomb materials under quasi-static load is provided. The analytical model which draws on the energy method is used to predict the MCF and crushing length during the collapse process.
To reveal the energy absorbing mechanism of thin-walled circular tubes made of a T700/3234 composite, tests were first conducted to find its material properties, and then quasi-static axial crushing tests were performed to determine the failure modes and were measured by material performance tests, and the damage mechanism and …
The significant potential of composite materials as highly effective energy absorbers has contributed to their increasing usage in the aerospace, automotive, and railway industries. ... the physics of composites crushing is very complicated because composites absorb crash energy through a combination of interlaminar (delamination) …
Guangdong Hangyu Composite Material Technology Co. Ltd. supplied the fiber/epoxy prepregs used in our study. Fig. 1 presents a diagram of the reinforced fabrics used: carbon/carbon (CC), carbon/glass (C0G90), glass/carbon (C90G0) and glass/glass (GG). C0G90 and C90G0 represent carbon/glass hybrid preforms fabricated with the …
Design a composite joint connecting a composite panel to a metallic plate attachment. Refer to the schematic in figure 2. For this joint we only design the bolts for the composite panel. We assume that the metallic attachment has adequate strength. The composite panel is made from [O/+45/9OIs AS/E.
1. Introduction. Due to the high specific stiffness and specific strength, Carbon Fiber Reinforced Plastic (CFRP) composites show great potential in aerospace industry and automotive industries [1].Deliberately designed CFRP also has excellent property of specific energy absorption (SEA) when compared with conventional materials on a …
In this group, the finite element models try to simulate the composite crushing phenomenon through a detailed modelling of its micromechanical behaviour. A very fine solid mesh is developed to accurately capture the …
The maximum peak force is referred to as the initial peak crushing force (PCF) in the early stage of impact, while the mean crushing force (MCF) is the average force required to crush the material specimen over a specific distance or stroke, and is determined as follows: (4) MCF = EA d = ∫ 0 d F (x) d x d Crush force efficiency (CFE) is …
The effect of particular parameters on the energy absorption and peak stress of composite material, under crushing load, is summarised below. 4.4.1.1. Lay-up. With the same chamfer angle, the UD specimen [0 ]8 shows the highest experimentally 72 W. Tan et al. (a) Exp Num 80 Energy Dissipation (J) Stress (MPa) 60 40 20 0 0 0.1 0.2 Strain (-) 3 ...
A recently developed material model for orthotropic composites is demonstrated by modeling an energy absorbing crush event used in the development …
DOI: 10.1002/pc.27669 Corpus ID: 261146490; Quasi‐static axial crushing of multi‐tubular ‐filled carbon fiber reinforced composite structures @article{Khan2023QuasistaticAC, title={Quasi‐static axial crushing of multi‐tubular ‐filled carbon fiber reinforced composite structures}, author={Tabrej Khan and …
Youngchul Kim, Holger Böhm & Jonas Richter. 222 Accesses. 6 Citations. Explore all metrics. Abstract. This paper is concerned with numerical simulation utilizing …
Airplanes are inevitably subjected to various impact loading conditions in the event of emergency landing. An airplane crash scenario is a complex nonlinear impact event which involves large deformation, material fracture, structural failure, and dynamic contact.The impact response becomes more complicated due to the presence of …
After these specimens were cut in the extrudate, the tensile and compression specimens were cut directly from the U profile, which was formed by compression molding using two plies of GMT material as illustrated in Fig. 2b. To determine the quasi-static mechanical properties of these glass mat thermoplastic materials a tensile test machine …
2. Problem statement. The optimization problem statement is defined as expressed in Equation 1, where minimum total material cost (see Equation 2) and maximum EA of the CFRP beam during axial crushing test were selected as the optimization objective in this work. In particular, the cost in this work only contains the …
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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Axial crushing behaviors of composite tubes are simulated using different rigid crushing platens. The simulated crushing morphology and energy absorption …
1. Introduction. Thin-walled structures made of composite materials have been widely used as energy absorbers in many engineering fields including automotive and aerospace due to their superior performance in improving the crashworthiness of structures during impact and crash situations and lightweight characteristics [1].Energy absorber …
All the crushing test data (load, displacement and velocity history curves) is shared in the Crashworthiness working group (CWG) consortium of the Composite material handbook (CMH17). Flat crush coupons are tested at the University of Utah and the C-channels are tested at the John H. Glenn Research Center of the National …
Different particle size of waste epoxy micro-spheres (100–600 μm) with core-shell structure is obtained through simple mechanical crushing and boron nitride surface treatment. By using smattering epoxy monomer as an adhesive, an eco-friendly composite material with a "brick-wall structure" can be formed.
This paper is concerned with numerical simulation utilizing LS-DYNA MAT54 for axial crush of glass-fiber mat/PA6 composite tubes. The crush simulation aims at reproducing the crush energy absorption capability measured from dynamic drop tests. The adopted MAT54 has a merit as a widely commercialized model of composite materials …
Energy Absorption and Failure Modes of Different Composite Open-Section Crush Elements under Axial Crushing Loading. by. Xulong Xi. 1,2, Pu Xue. 1, …
Reference: Abbott, Richard. Analysis and Design of Composite and Metallic Flight Vehicle Structures 3 Edition, 2019 This section is taken largely from ( MIL-HDBK-17F Vol 3, 2002). Section 9.3 at the back of this reference has some excellent general guidelines for composite laminate design. Where the guidelines are obsolete or incorrect I have not …