Drucker-Prager-Cap modelling of boron carbide powder for coupled electrical-thermal-mechanical finite element simulation of spark plasma sintering

Bai, Wenhui; Liu, Wei; Wang, Weimin; Peng, Chao; Wang, Aiyang; He, Qianglong; Li, Geng; Huang, Sheng

doi:10.1016/j.ceramint.2021.04.165

Cited by 9 publications

(4 citation statements)

References 40 publications

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“…where σ is the conductivity, ϕ is the electric potential, and h g and σ g are the gap thermal conductivity and gap electrical conductivity, respectively. h g = 2 × 10 5 WM −2 K −1 and σ g = 3.2 × 10 7 Ω −2 M −1 was taken for the model [28]. σ s is the Stefan-Boltzmann constant, and ε is the emissivity (which is taken as 0.8) [29].…”

Section: Finite Element Modelingmentioning

confidence: 99%

“…The process to obtain the parameters of the DPC model is described in Section 2.2. The thermal and electric properties of the powder and the thermal, electric, and mechanical properties of the other components were taken from Ref [28].…”

Section: Finite Element Modelingmentioning

confidence: 99%

“…The feasibility of the method to simulate the densification process was confirmed by comparing the simulation results of complex shapes with the experimental results. Bai et al [28] used the Drucker-Prager Cap model, which could accurately describe the densification behavior of powder materials, to perform numerical analysis on the spark plasma sintering process of boron carbide powder. The parameters of the Drucker-Prager Cap model were identified at different temperatures based on spark plasma sintering experiments.…”

Section: Introductionmentioning

confidence: 99%

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Numerical Simulation of Physical Fields during Spark Plasma Sintering of Boron Carbide

et al. 2023

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Spark plasma sintering is a new technology for preparing ceramic materials. In this article, a thermal-electric-mechanical coupled model is used to simulate the spark plasma sintering process of boron carbide. The solution of the thermal-electric part was based on the charge conservation equation and the energy conservation equation. A phenomenological constitutive model (Drucker-Prager Cap model) was used to simulate the densification process of boron carbide powder. To reflect the influence of temperature on sintering performance, the model parameters were set as functions of temperature. Spark plasma sintering experiments were conducted at four temperatures: 1500 °C, 1600 °C, 1700 °C, and 1800 °C, and the sintering curves were obtained. The parameter optimization software was integrated with the finite element analysis software, and the model parameters at different temperatures were obtained through the parameter inverse identification method by minimizing the difference between the experimental displacement curve and the simulated displacement curve. The Drucker-Prager Cap model was then incorporated into the coupled finite element framework to analyze the changes of various physical fields of the system over time during the sintering process.

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Section: Finite Element Modelingmentioning

confidence: 99%

Section: Finite Element Modelingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Numerical Simulation of Physical Fields during Spark Plasma Sintering of Boron Carbide

et al. 2023

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“…The SPS finite element model based on finite element simulation software (such as Abaqus, Marc, and Ansys) can accurately describe the distribution of temperature field, electric field, and relative density in the process of powder sintering. [ 14–16 ] Guy et al [ 17 ] examined the distribution of current density, temperature, and stress field in zirconium carbide and carbon oxides during spark plasma sintering by combining experimentation with finite element simulation. Cao et al [ 18 ] analyzed the temperature and stress distribution in the spark plasma sintering process using the thermal–mechanical–electric coupled dynamic finite element model.…”

Section: Introductionmentioning

confidence: 99%