At micro- and nanoscales, the gas pressure load is generally simulated by the thermal motion of gas molecules. However, the pressure load can hardly be produced or controlled accurately, because the effects of the wall thickness and the atomic weight of the gas molecules are not taken into account. In this paper, we propose a universal gas molecules model for simulating the pressure load accurately at micro- and nanoscales, named mock gas molecules model. Six scale-independent parameters are established in this model, thus the model is applicable at both micro- and nanoscales. To present the validity and accuracy of the model, the proposed model is applied into the coarse-grained molecular dynamics simulation of graphene blister, and the simulation results agree well with experimental observations from the graphene blister test, indicating that the model can produce and control the pressure load accurately. Furthermore, the model can be easily implemented into many simulators for problems about the solid–gas interaction, especially for membrane gas systems.
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September 2019
Research-Article
A Mock Gas Molecules Model for Accurately Simulating Pressure Load at Micro- and Nanoscales
Yong Ma,
Yong Ma
Institute of Solid Mechanics,
Beijing 100191,
e-mail: mayong@buaa.edu.cn
Beihang University (BUAA)
,Beijing 100191,
China
e-mail: mayong@buaa.edu.cn
Search for other works by this author on:
Guorui Wang,
Guorui Wang
CAS Key Laboratory of Nanosystem and Hierarchical Fabrication,
CAS Center for Excellence in Nanoscience,
Beijing 100190,
e-mail: guoruiwang2@gmail.com
CAS Center for Excellence in Nanoscience,
National Center for Nanoscience and Technology
,Beijing 100190,
China
e-mail: guoruiwang2@gmail.com
Search for other works by this author on:
Yuli Chen,
Yuli Chen
1
Institute of Solid Mechanics,
Beijing 100191,
Beihang University (BUAA)
,Beijing 100191,
China
;Department of Civil and Environmental Engineering,
Evanston, IL 60208
e-mail: yulichen@buaa.edu.cn
Northwestern University
,Evanston, IL 60208
e-mail: yulichen@buaa.edu.cn
1Corresponding author.
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Luqi Liu,
Luqi Liu
CAS Key Laboratory of Nanosystem and Hierarchical Fabrication,
CAS Center for Excellence in Nanoscience,
Beijing 100190,
e-mail: liulq@nanoctr.cn
CAS Center for Excellence in Nanoscience,
National Center for Nanoscience and Technology
,Beijing 100190,
China
e-mail: liulq@nanoctr.cn
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Zhong Zhang
Zhong Zhang
CAS Key Laboratory of Nanosystem and Hierarchical Fabrication,
CAS Center for Excellence in Nanoscience,
Beijing 100190,
e-mail: zhong.zhang@nanoctr.cn
CAS Center for Excellence in Nanoscience,
National Center for Nanoscience and Technology
,Beijing 100190,
China
e-mail: zhong.zhang@nanoctr.cn
Search for other works by this author on:
Yong Ma
Institute of Solid Mechanics,
Beijing 100191,
e-mail: mayong@buaa.edu.cn
Beihang University (BUAA)
,Beijing 100191,
China
e-mail: mayong@buaa.edu.cn
Guorui Wang
CAS Key Laboratory of Nanosystem and Hierarchical Fabrication,
CAS Center for Excellence in Nanoscience,
Beijing 100190,
e-mail: guoruiwang2@gmail.com
CAS Center for Excellence in Nanoscience,
National Center for Nanoscience and Technology
,Beijing 100190,
China
e-mail: guoruiwang2@gmail.com
Yuli Chen
Institute of Solid Mechanics,
Beijing 100191,
Beihang University (BUAA)
,Beijing 100191,
China
;Department of Civil and Environmental Engineering,
Evanston, IL 60208
e-mail: yulichen@buaa.edu.cn
Northwestern University
,Evanston, IL 60208
e-mail: yulichen@buaa.edu.cn
Luqi Liu
CAS Key Laboratory of Nanosystem and Hierarchical Fabrication,
CAS Center for Excellence in Nanoscience,
Beijing 100190,
e-mail: liulq@nanoctr.cn
CAS Center for Excellence in Nanoscience,
National Center for Nanoscience and Technology
,Beijing 100190,
China
e-mail: liulq@nanoctr.cn
Zhong Zhang
CAS Key Laboratory of Nanosystem and Hierarchical Fabrication,
CAS Center for Excellence in Nanoscience,
Beijing 100190,
e-mail: zhong.zhang@nanoctr.cn
CAS Center for Excellence in Nanoscience,
National Center for Nanoscience and Technology
,Beijing 100190,
China
e-mail: zhong.zhang@nanoctr.cn
1Corresponding author.
Contributed by the Applied Mechanics Division of ASME for publication in the Journal of Applied Mechanics. Manuscript received April 10, 2019; final manuscript received May 27, 2019; published online June 27, 2019. Assoc. Editor: Yashashree Kulkarni.
J. Appl. Mech. Sep 2019, 86(9): 091006 (15 pages)
Published Online: June 27, 2019
Article history
Received:
April 10, 2019
Revision Received:
May 27, 2019
Accepted:
May 27, 2019
Citation
Ma, Y., Wang, G., Chen, Y., Liu, L., and Zhang, Z. (June 27, 2019). "A Mock Gas Molecules Model for Accurately Simulating Pressure Load at Micro- and Nanoscales." ASME. J. Appl. Mech. September 2019; 86(9): 091006. https://doi.org/10.1115/1.4043887
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