Studies of Static and Dynamic Characteristics of the EDM Machine Based on the ANSYS Workbench

Wang, J. H.; Li, G.; Liu, Z. F.; Zhao, Yongsheng; Cheng, Zhiguang; Liu, J. Y.; Li, Y.

doi:10.1007/s11223-015-9632-4

Cited by 6 publications

(4 citation statements)

References 2 publications

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“…The rapid development of computational techniques based on the finite element method (FEM) allows vibration analysis of the systems of complex geometry and design to be conducted [1]. In [2], the finite element (FE) models are used to analyze the static and dynamic behavior of the EDM (electrical discharge machining) machine. The authors [3] analyzed cyclically loaded gear vibrations with a power circulation test rig configuration using FEM techniques.…”

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confidence: 99%

Vibration Analysis of a Low-Power Reduction Gear

Noga

Markowski²

2016

Strength Mater

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Free vibrations of a low-power reduction gear engaged with a hydraulic pump of the test rig are discussed. Vibration analysis is performed with the finite element representation and commercial ANSYS program. Vibration analysis of an examined system is conducted in the two stages. The natural frequencies of free transverse vibrations of the gears are first generated, and on the basis of the Campbell diagrams, the excitation speeds for several natural frequencies of examined gears are calculated. Then the free vibrations of a reduction gear are analyzed, and two computational cases are presented. In the first case, only the mass and geometry of all parts of the body are considered. In the second case, the mass of tooth gears is also taken into account. Based on the FE models, the first ten natural frequencies and natural mode shapes of a reduction gear are calculated. Then, these results are used to estimate the stress level in the walls of the body for a permissible acceleration value. As expected, smaller stress values for a permissible acceleration value are obtained for the second finite element model of the system. The problems discussed here can be helpful for engineers dealing with the dynamics of gear systems.

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confidence: 99%

Vibration Analysis of a Low-Power Reduction Gear

Noga

Markowski²

2016

Strength Mater

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“…In this study, the drafting devices were simplified without affecting the solutions, which helped to save computing time and achieve convergence. 23 In addition, due to the symmetry of the drafting devices, DAD and NDS finite element models with a 3 mm width were created for the simulation to conserve analysis resources and boost the analysis efficiency (shown in Figure 3). The perimeters of the top and bottom rubber aprons in DAD were 246 mm and 582 mm, respectively.…”

Section: Finite Element Modelmentioning

confidence: 99%

Finite element modeling and experimental investigation between the novel drafting and double-apron drafting systems

Quan

Cheng

et al. 2022

Textile Research Journal

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The ring spinning frame featuring the double-apron drafting device is the most widely used method due to its various advantages. The finite element method and experiments were conducted to study the double-apron drafting unit and the novel drafting system. The novel drafting system is characterized by a curved drafting zone and curtate floating zone due to the elimination of the double-apron drafting unit’s double rubber aprons and the innovation of the pins. The finite element results of the double-apron drafting unit and novel drafting system demonstrate that the external friction field in the drafting zone of the double-apron drafting unit is composed of straight-line segments from the pin nip to the middle roller nip. In contrast, the force in the novel drafting system is akin to undulations and exhibits stronger and smoother distribution. In experiments, the double-apron drafting unit and novel drafting system were installed on the ring spinning and compact spinning frames, namely the double-apron drafting unit-ring spinning, double-apron drafting unit-compact spinning, novel drafting system-ring spinning and novel drafting system-compact spinning, to study the slippage rates and yarn properties. It can be seen that the slippage rates of rubber aprons in the double-apron drafting unit-ring spinning vary from 5.84% to 6.89%, while the slippage rates of the lattice apron in the novel drafting system-ring spinning range from 0.39% to 0.66%. In addition, the yarn properties produced by the novel drafting system-ring spinning and novel drafting system-compact spinning, including yarn evenness, imperfections and strength, outstrip those produced by the double-apron drafting unit-ring spinning and double-apron drafting unit-compact spinning.

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“…The test was used to study the influence of wind, sand and other factors on the corona of transmission line hardware by Zhao et al [6]. Using finite element software, Wang et al [7] analyzed the static and dynamic characteristics of the U-shaped ring by numerical simulation and found that the U-shaped ring had the most serious deformation at the sixth order. Lu [8] used ANSYS to analyze the statics and dynamics of the U-shaped ring, and obtained the maximum equivalent stress and dangerous contact area of the U-shaped ring.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of U-Shaped Metal Rings in a Wind-Sand Environment

Wang¹,

Li²,

Chai³

et al. 2021

Fluid Dynamics &Amp; Materials Processing

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The interaction of U-shaped rings used for power transmission hardware with a wind-sand field is simulated numerically. A standard k À turbulence model is used in synergy with an Eulerian-Lagrangian approach. The results show that the wind pressure on the windward side of the U-shaped ring is the highest, a negative pressure zone appears on both sides of the U-shaped ring, while a Kármán Vortex Street is created on its leeward side. There are three possible regimes of motion for the sand grains in the wind field. Sand grains with size below 0.125 mm can follow the airflow directly into the contact area of two U-shaped rings. When the sand size is about 0.1 mm, the number of sand grains that are blown into the contact area attains a maximum. Through the simulation of U-shaped rings in the wind-sand field, the dynamics of such processes are explained in detail, thereby providing relevant information for the subsequent protection and design of connecting hardware used for power transmission.

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Studies of Static and Dynamic Characteristics of the EDM Machine Based on the ANSYS Workbench

Cited by 6 publications

References 2 publications

Vibration Analysis of a Low-Power Reduction Gear

Vibration Analysis of a Low-Power Reduction Gear

Finite element modeling and experimental investigation between the novel drafting and double-apron drafting systems

Numerical Simulation of U-Shaped Metal Rings in a Wind-Sand Environment

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