The regionalized modelling and simulation of the micro-tensile process based on 3D Voronoi model

Han, Jianhua; Zheng, Wei; Xu, Shubo; Dang, Guanghan

doi:10.1016/j.mtcomm.2022.103614

Cited by 1 publication

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“…Developing a polycrystalline geometric model is the foundation for investigating polycrystalline materials' plastic deformation. The 3D grain cluster generated in this work was based on the Voronoi diagram method [18,19] and the ABAQUS/python script.…”

Section: Development Of Polycrystalline Finite Element Model With 3d ...mentioning

confidence: 99%

“…(2 where λi is the volume fraction of the i-th grain, Mi is the orientation factor of the i-th grain, τi is the frictional shear stress that restricts the dislocation sliding along the slip plane, K′d −1/2 is the resistance shear stress due to dislocation stacking near the grain bound ary, d is the grain size of the material, and n is the number of grains. Through the micro compression experiment of pure copper, the flow stress-strain curves of the specimens with different grain sizes were obtained [18]. Equation (3) shows the representations o K′(ε) and τi(ε).…”

Section: 𝜎 = 𝑀mentioning

confidence: 99%

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Study on Size Effect of Surface Roughness Based on the 3D Voronoi Model and Establishment of Roughness Prediction Model in Micro-Metal Forming

et al. 2022

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The primary purpose of this paper is to study the size effect of surface roughness and realize the quantitative description of the surface roughness in micro-forming process. This work is a continuation of the previous work by the authors. The effects of the initial surface roughness of the specimen, the grain size, and grain orientations on the surface roughness of micro-upsetting products were investigated. The ratio of the number of grains of the surface layer to the total number of grains was adopted to characterize the size effect. The variation of the size effect on the contact normal pressure during the compression process was also analyzed. And the quantitative description of the evolution law of surface roughness for micro-formed parts was realized. The corresponding micro compression experiment was done in order to testify the prediction model.

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Section: Development Of Polycrystalline Finite Element Model With 3d ...mentioning

confidence: 99%

Section: 𝜎 = 𝑀mentioning

confidence: 99%

Study on Size Effect of Surface Roughness Based on the 3D Voronoi Model and Establishment of Roughness Prediction Model in Micro-Metal Forming

et al. 2022

Self Cite

View full text Add to dashboard Cite

show abstract

The regionalized modelling and simulation of the micro-tensile process based on 3D Voronoi model

Cited by 1 publication

References 18 publications

Study on Size Effect of Surface Roughness Based on the 3D Voronoi Model and Establishment of Roughness Prediction Model in Micro-Metal Forming

Study on Size Effect of Surface Roughness Based on the 3D Voronoi Model and Establishment of Roughness Prediction Model in Micro-Metal Forming

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