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Finite-element analysis on pressure transfer mechanism in large-volume cubic press |
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| Authors: | Rui Li Bojing Xu Qingchao Zhang Xue Gu Guoliang Zheng Hongan Ma |
| Institution: | 1. School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun, People’s Republic of China;2. State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, People’s Republic of China;3. School of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing, People’s Republic of China;4. National Key Laboratory of Superhard Materials, Jilin University, Changchun, People’s Republic of China |
| Abstract: | Pressure transmission inside a large-volume cubic press was examined using finite-element (FE) simulations. Calculations were carried out for the pyrophyllite P-transmitting mediums (32.5?×?32.5?×?32.5?mm3). The cell pressures of the simulations were chosen as representative values, including 3.75 and 5.5?GPa. A modified constitutive model for pyrophyllite and more realistic modelling were proposed. The global pressure fields were displayed using the contour plots. The results reveal that (1) at the centre of the pyrophyllite cube exists a region of constant quasi-hydrostatic pressure (RoCQHyP) where the pressure drop is less than 50?MPa; (2) how mechanical property (e.g. bulk modulus) of the P-transmitting medium affects cubic press P-transmitting performance. The simulated results were corroborated by high pressure experiments. |
| Keywords: | Large-volume cubic press pressure-transmitting efficiency finite-element simulation |