Finite element modeling of multiple transverse impact damage behaviors of 3-D braided composite beams at microstructure level

Hu, Meiqi; Zhang, Junjie; Sun, Yunlan; Gu, Bohong

doi:10.1016/j.ijmecsci.2018.09.034

Cited by 28 publications

(14 citation statements)

References 25 publications

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“…Ideal interfaces between matrix and sulfides were considered. The material failure model for the matrix and the sulfides considered both ductile and shear modes, which are described in the literature for a large range of materials [31][32][33]. The failure modes allow the element deletion of the mesh, leading to crack nucleation and propagation throughout the material.…”

Section: Fem-finite-element Modelingmentioning

confidence: 99%

Orthogonal cut of SPS-sintered composites with ferrous matrix and Fe Mo S particles: Numerical and experimental analysis

Souza

Ordoñez

Mezghani

et al. 2020

Tribology International

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Metal-matrix composites with solid lubricant reinforcements may present a suitable alternative to improve the tribological behavior of sintered components. Besides the performance during the application, the presence of solid lubricants may also modify component manufacture, for example, during machining operations to achieve complex shapes not directly obtained from the sintering process. This work describes a numerical and experimental analysis on the orthogonal cut of metal-matrix composites composed of FeeMoeS particles embedded in an Astaloy 85 Mo (Höganäes AB) matrix. Specimens were prepared using the Spark-Plasma Sintering (SPS) technique, from mixtures containing powders of Astaloy 85 Mo steel and 2 wt% or 4 wt% of molybdenum disulfide (MoS 2). An unreinforced Astaloy 85 Mo specimen (without MoS 2) was also included in the analysis. Different microstructures were observed after SPS. The unreinforced specimen presented a ferrite-pearlite structure with a porosity level below 2% and the specimen sintered with 2 wt% of MoS 2 presented iron sulfide particles dispersed in the steel matrix. The structure of the specimen sintered with 4 wt % was more complex, with two distinct phases dispersed in the Astaloy 85 Mo matrix. Experimental orthogonal cuts were conducted on the three specimens using a shaper machine tool equipped with a tungsten carbide (WCeCo) cutting insert. Tests were recorded using a high-speed camera. The machined surfaces were later analyzed with an optical profilometer and in a scanning electron microscope (SEM) with energy-dispersive X-ray spectroscopy (EDS). The chips were also characterized. The cutting operation was simulated by two-dimensional (2D) finite-element analysis. The meshes were prepared based on the specimen microstructures and considering the properties of the individual phases. Results have indicated significant differences in the cutting process. Observation of the chip surfaces indicates plastic deformation on the unreinforced specimen, in opposition to more uniform scratches on the composite surfaces, especially that of the specimen sintered with 4 wt % of MoS 2 .

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Section: Fem-finite-element Modelingmentioning

confidence: 99%

Orthogonal cut of SPS-sintered composites with ferrous matrix and Fe Mo S particles: Numerical and experimental analysis

Souza

Ordoñez

Mezghani

et al. 2020

Tribology International

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“…And the beam with braiding angles of 40 whose preform maintained structural integrity during impact. The results demonstrate the fact that the beam with large braiding angle interweaved more tightly, which enhanced the thickness and the fiber volume fraction (Hu et al, 2018). Therefore, the resistance of the beam to deformation and damage increases.…”

Section: Comparisons Between Experimental and Fea Resultsmentioning

confidence: 75%

“…pl represents plastic. After damage initiation, the material stiffness was degraded gradually according to the specified damage evolution law (Hu et al, 2018;Zhou et al, 2017). It assumes that the degradation of the stiffness associated with each active failure mechanism can be modeled using a scalar damage variable, d i ði 2 N act Þ, where N act represents the set of active mechanisms.…”

Section: Finite Element Modeling Of the Thermomechanical Behaviormentioning

confidence: 99%

Multiple transverse impact damage behaviors of 3-D-braided composite beams under room and high temperatures

Liu

Zhang

et al. 2019

International Journal of Damage Mechanics

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Three-dimensional braided composite materials have been widely applied to engineering structure manufacturing. It is of a great importance to characterize the impact damage of the three-dimensional braided composite under various temperatures for optimizing the engineering structure. Here we conducted transverse impact deformation and damage of three-dimensional braided composite beams with different braiding angles at room and elevated temperatures. A split Hopkinson pressure bar with a heating device combined with high-speed camera was employed to test multiple transverse impact behaviors and to record the impact deformation developments. The results indicated that failure load, initial modulus, and energy absorption decreased with the increase of temperature, whereas the deformation increased slightly with elevated temperatures. We found that the impact brittle damages occurred earlier and the local adiabatic temperature raised higher when the temperature is lower than the glass transition temperature (Tg) of epoxy resin. While above the Tg, the impact ductile damages occurred later and the local temperature raised lower. The thermal stress distribution along the braiding yarn leads to cracks propagation in yarn direction. Part of the impact energy absorptions converted into thermal energy. In addition, the beam with larger braiding angle has high damage tolerance and crack propagation resistance.

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“…However, the commercial finite element codes which are mostly used in industry are not fully suitable to predict the complex deformation and fracture mechanisms of braided composites in particular since they are usually optimized to computing time, and not for correctness of damage prediction. For that reason, the development of suitable simulation techniques and material models for different types of textile reinforcement has been a major research field in recent years, see e.g., [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27]. On the one hand, such methods have to take complex micro-meso-macro interactions within the material into account.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Impact Analysis of Automotive Bumper Brackets Made of 2D Triaxially Braided CFRP Composites

et al. 2020

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The impact behavior of carbon fiber epoxy bumper brackets reinforced with 2D biaxial and 2D triaxial braids was experimentally and numerically analyzed. For this purpose, a phenomenological damage model was modified and implemented as a user material in ABAQUS. It was hypothesized that all input parameters could be determined from a suitable high-speed test program. Therefore, novel impact test device was designed, developed and integrated into a drop tower. Drop tower tests with different impactor masses and impact velocities at different bumper bracket configurations were conducted to compare the numerically predicted deformation and damage behavior with experimental evidence. Good correlations between simulations and tests were found, both for the global structural deformation, including fracture, and local damage entities in the impact zone. It was proven that the developed phenomenological damage models can be fully applied for present-day industrial problems.

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Finite element modeling of multiple transverse impact damage behaviors of 3-D braided composite beams at microstructure level

Cited by 28 publications

References 25 publications

Orthogonal cut of SPS-sintered composites with ferrous matrix and Fe Mo S particles: Numerical and experimental analysis

Orthogonal cut of SPS-sintered composites with ferrous matrix and Fe Mo S particles: Numerical and experimental analysis

Multiple transverse impact damage behaviors of 3-D-braided composite beams under room and high temperatures

Experimental and Numerical Impact Analysis of Automotive Bumper Brackets Made of 2D Triaxially Braided CFRP Composites

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