Application of SPH method for modeling of metal extrusion process

Lampropoulos, Adam D.; Manolakos, D.E.

doi:10.1007/s40571-021-00414-0

Cited by 4 publications

(2 citation statements)

References 29 publications

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“…Here, the SPH method is used. Its meshless nature allows the large strain to be simulated without re-meshing and historically dependent properties such as plastic strain to be tracked, making it suitable for defect prediction [15,36,[85][86][87][88]90].…”

Section: Extrusion Processmentioning

confidence: 99%

Archives of Foundry Engineering

Nguyen,

Hojny

2022

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Smoothed Particle Hydrodynamics (SPH) is a Lagrangian formula-based non-grid computational method for simulating fluid flows, solid deformation, and fluid structured systems. SPH is a method widely applied in many fields of science and engineering, especially in the field of materials science. It solves complex physical deformation and flow problems. This paper provides a basic overview of the application of the SPH method in metal processing. This is a very useful simulation method for reconstructing flow patterns, solidification, and predicting defects, limitations, or material destruction that occur during deformation. The main purpose of this review article is to give readers better understanding of the SPH method and show its strengths and weaknesses. Studying and promoting the advantages and overcoming the shortcomings of the SPH method will help making great strides in simulation modeling techniques. It can be effectively applied in training as well as for industrial purposes.

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Section: Extrusion Processmentioning

confidence: 99%

Archives of Foundry Engineering

Nguyen,

Hojny

2022

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“…It can effectively simulate the microscopic and macroscopic movement between materials and has advantages in the study of agricultural machinery. Moreover, FEM has high efficiency and accuracy in calculating the mechanical deformation of continuum media 21,22 , whereas SPH has a greater advantage in simulating large deformation, large damage, and high nonlinearity 23 . Therefore, this paper uses physical and simulation tests, as well as experimental optimization design, to calibrate soil-related contact parameters and uses DEM and FEM-SPH coupling methods to conduct cutting simulation analysis.…”

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confidence: 99%

Calibrating contact parameters of typical rotary tillage components cutting soil based on different simulation methods

Zhang

et al. 2023

Sci Rep

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This report analyzes the problem of complex soil movement patterns under the action of coupled forces, such as tension and shear, in agricultural processes and aims to improve the accuracy of contact parameters used in discrete element simulation studies of rototiller-soil interactions. This study focuses on the soil of Shihezi cotton field in the 8th division of Xinjiang and investigates the rotating tiller roller as a soil-touching component of tillage machinery. A combination of simulations and physical testing is used. We perform angle of repose tests and use edge detection, fitting, and other image processing methods to automatically, quickly, and accurately detect the soil accumulation and angle calibration of the contact parameters with soil particles. Additionally, soil slip tests are conducted to calibrate the contact parameters between the soil and the rotary blades. Optimization is achieved based on orthogonal simulations and the Box-Behnken response surface method using physically measured values as the target. A regression model of the stacking angle and rolling friction angle is established to determine the optimal combination of simulation contact parameters: between soil and soil, the recovery coefficient is 0.402, static friction coefficient is 0.621, and rolling friction coefficient is 0.078; between soil contact parts and soil, the recovery coefficient is 0.508, static friction coefficient is 0.401, and rolling friction coefficient is 0.2. Furthermore, the calibration parameters are selected as contact parameters for the discrete element simulation. By combining the above two simulation methods to analyze and compare the simulation process of cutting soil from rototiller roller parts to rototiller single blade parts, we obtained the changes in energy, cutting resistance, and soil particle movement at different depths of the soil cutting process. Finally, the average cutting resistance was used as an index for validation in the field tests. The measured value is 0.96 kN and the error of the discrete element simulation is 13%. This demonstrates the validity of the calibrated contact parameters and the accuracy of the simulation, which can provide a theoretical reference and technical support for the study of the interaction mechanisms between of tillage equipment parts and soil, as well as the design and optimization of these interactions in the future.

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Energy analysis of the extrusion process through a streamlined Gaussian die

Zhang

Liu

2023

Int J Adv Manuf Technol

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Application of SPH method for modeling of metal extrusion process

Cited by 4 publications

References 29 publications

Archives of Foundry Engineering

Archives of Foundry Engineering

Calibrating contact parameters of typical rotary tillage components cutting soil based on different simulation methods

Energy analysis of the extrusion process through a streamlined Gaussian die

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