An efficient SPH methodology for modelling mechanical characteristics of particulate composites

Zheng, Zijun; Kulasegaram, Sivakumar; Chen, P.; Chen, Y.Q.

doi:10.1016/j.dt.2020.04.003

Cited by 3 publications

(4 citation statements)

References 39 publications

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“…These studies provide effective methods with which to study grinding processes and ground surface quality for SiC and other brittle material. Zheng et al [63] developed an accurate and efficient modeling platform for simulating mechanical properties of particle-reinforced matrix composites. As shown in Figure 16, a master-slave method is adopted within SPH formulation for imposing the essential boundary conditions and other linear displacement constraints.…”

Section: Smoothed Particle Hydrodynamics (Sph)mentioning

confidence: 99%

“…The effects of damage definition on the chip morphology and cutting forces demonstrate that an appropriate damage criterion must be taken into account for SPH cutting simulations, despite the natural separation of particles, and regardless of the ductility of the material. Although SPH is feasible in machining simulations, however, it underestimates forces, instabilities, and numerical issues with boundary particles, which can Zheng et al [63] developed an accurate and efficient modeling platform for simulating mechanical properties of particle-reinforced matrix composites. As shown in Figure 16, a master-slave method is adopted within SPH formulation for imposing the essential boundary conditions and other linear displacement constraints.…”

Section: Smoothed Particle Hydrodynamics (Sph)mentioning

confidence: 99%

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Review on Abrasive Machining Technology of SiC Ceramic Composites

Zhang,

Zhao,

et al. 2024

Micromachines

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Ceramic matrix composites have the advantages of low density, high specific strength, high specific die, high-temperature resistance, wear resistance, chemical corrosion resistance, etc., which are widely used in aerospace, energy, transportation, and other fields. CMCs have become an important choice for engine components and other high-temperature component manufacturing. However, ceramic matrix composite is a kind of multi-phase structure, anisotropy, high hardness material, due to the brittleness of the ceramic matrix, the weak bonding force between fiber and matrix, and the anisotropy of composite material. Burr, delamination, tearing, chips, and other surface damage tend to generate in the machining, resulting in surface quality and strength decline. This paper reviewed the latest abrasive machining technology for SiC ceramic composites. The characteristics and research directions of the main abrasive machining technology, including grinding, laser-assisted grinding, ultrasonic-assisted grinding, and abrasive waterjet machining, are introduced first. Then, the commonly used numerical simulation research for modeling and simulating the machining of ceramic matrix composites is briefly summarized. Finally, the processing difficulties and research hotspots of ceramic matrix composites are summarized.

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Section: Smoothed Particle Hydrodynamics (Sph)mentioning

confidence: 99%

Section: Smoothed Particle Hydrodynamics (Sph)mentioning

confidence: 99%

Review on Abrasive Machining Technology of SiC Ceramic Composites

Zhang,

Zhao,

et al. 2024

Micromachines

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“…In Eqs. (19) , (20) , and (21) , solving fluid mechanics problems based on the SPH method includes the following governing equations [ 1 ]:

where

is the Cauchy stress tensor,

is the velocity,

is the fluid density, and

is the internal energy per unit of mass. The Cauchy stress tensor can be expressed as Eq.…”

Section: Numerical Simulationsmentioning

confidence: 99%

“…With the continuous development of modern laser and infrared detection technologies, corresponding countermeasures are valued worldwide [ 1 ]. Smokescreen is an effective means of interfering with enemy's detection and has the advantages of low cost, fast speed, and high efficiency.…”

Section: Introductionmentioning

confidence: 99%

Analysis of factors influencing infrared extinction area of explosive smokescreen

Fang

et al. 2022

Heliyon

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Dynamic Analysis and Parameter Optimization of the Cutting System for Castor Harvester Picking Devices

et al. 2023

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Our study aimed to identify a design which would reduce cutting resistance during the harvesting of castor. This paper presents a theoretical study of the wave-type disc cutter, which plays an important role in castor harvesting. Based on the SPH–FEM coupling algorithm, a combined orthogonal rotation experiment was performed to study the effects of disc cutter thickness, edge angle, disc cutter rotation speed, and feeding speed on the maximum cutting force. The response surface method was used to achieve an optimal combination of all the test factors. Mathematical modeling of the maximum cutting force and influencing factors was utilized to obtain the optimal parameters for a cutting system consisting of wave-type disc cutters. The optimal results were obtained with a computer-simulated disc cutter rotation speed of 844.2–942.1 r/min, a feeding speed of 0.89–1.01 m/s, a disc cutter thickness of 2.71–3.15 mm, and an edge angle of 29.2–33.9°. Under these conditions, the maximum cutting force was less than 50 N. Finally, the experimental data and numerical computer simulation results were compared using cutting performance test verification. The analysis found that the test results and simulation results were largely consistent. Therefore, the simulation model was judged to be effective and reasonable.

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An efficient SPH methodology for modelling mechanical characteristics of particulate composites

Cited by 3 publications

References 39 publications

Review on Abrasive Machining Technology of SiC Ceramic Composites

Review on Abrasive Machining Technology of SiC Ceramic Composites

Analysis of factors influencing infrared extinction area of explosive smokescreen

Dynamic Analysis and Parameter Optimization of the Cutting System for Castor Harvester Picking Devices

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