Zobrazeno 1 - 10
of 101
pro vyhledávání: '"Byung Chai Lee"'
Publikováno v:
Materials & Design, Vol 214, Iss , Pp 110398- (2022)
Higher-order deformation theories, such as the couple stress and strain gradient theory, have been widely used to predict the mechanical behavior of micro/nano-scale structures. In this paper, the additional length scale parameter introduced in the c
Externí odkaz:
https://doaj.org/article/ca478e7a179345b49a8ec09ba6978d9d
Publikováno v:
Computer Methods in Applied Mechanics and Engineering. 411:116053
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8dd4dfc1b2ecef12f82cccac6eb12505
https://doi.org/10.1016/j.cma.2023.116053
https://doi.org/10.1016/j.cma.2023.116053
Autor:
Byung Chai Lee, Young-Rok Kwon
Publikováno v:
Mechanics of Advanced Materials and Structures. 29:1511-1522
An error in the beam model proposed by Lam, Yang, Chong, Wang, & Tong (2003) for the modified couple stress theory is found and corrected, and then the corrected model is verified by the finite ele...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::52efde19974ca29b83c644f032b09c0d
https://doi.org/10.1080/15376494.2020.1825887
https://doi.org/10.1080/15376494.2020.1825887
Publikováno v:
Computational Mechanics. 65:1493-1508
In this paper, a four-node $$C^{0}$$ tetrahedral element for the modified couple stress theory is proposed. Since the governing equations are the fourth-order differential equations, the first-order derivative of displacement or rotation should be ap
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::239cb576b3b61ee6868577379a58c128
https://doi.org/10.1007/s00466-020-01831-3
https://doi.org/10.1007/s00466-020-01831-3
Publikováno v:
Structural and Multidisciplinary Optimization. 58:2203-2217
In this study, the design optimization process of a vehicle front body structure made of short-fiber composites is proposed. The aim of the optimization process is to reduce the weight in consideration of quality and production characteristics. Injec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::793a14ecd6e81a087ea172436640bcfe
https://doi.org/10.1007/s00158-018-2008-1
https://doi.org/10.1007/s00158-018-2008-1
Publikováno v:
Journal of Computational Design and Engineering, Vol 6, Iss 2, Pp 197-208 (2019)
In the computer aided engineering process with finite element analysis, a CAD surface model is sometimes needed for various tasks such as remeshing, shape optimization or design modification. Occasionally, engineers who perform an analysis at the pro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1118678af3f8c11fa136eaaa40501690
https://doi.org/10.1016/j.jcde.2018.05.004
https://doi.org/10.1016/j.jcde.2018.05.004
Autor:
Jae-Hoon Choi, Byung Chai Lee
Publikováno v:
International Journal for Numerical Methods in Engineering. 114:1245-1261
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::af2456e56933bfa348a9483a428593cd
https://doi.org/10.1002/nme.5784
https://doi.org/10.1002/nme.5784
Autor:
Jae-Hoon Choi, Byung Chai Lee
Publikováno v:
International Journal for Numerical Methods in Engineering. 113:1711-1728
Summary In this paper, a new four-node hybrid stress element is proposed using a node-based smoothing technique of tetrahedral mesh. The conditions for hybrid stress field required are summarized and the field should be continuous for better performa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3716f04c4f48d614508a419d9ddd515b
https://doi.org/10.1002/nme.5717
https://doi.org/10.1002/nme.5717
Autor:
Young-Rok Kwon, Byung Chai Lee
Publikováno v:
Computational Mechanics. 62:97-110
Three dimensional mixed elements for the modified couple stress theory are proposed. The $$C^{1}$$ continuity for the displacement field, which is required because of the curvature term in the variational form of the theory, is satisfied weakly by in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dc25421c714ef5dae208c73b33908612
https://doi.org/10.1007/s00466-017-1487-z
https://doi.org/10.1007/s00466-017-1487-z
Publikováno v:
Computers & Structures. 246:106476
In this paper, a mixed tetrahedral element based on the Lagrange multiplier is newly developed for the modified couple stress theory. The limitations of the Lagrange multiplier method are that the total number of degrees of freedom is increased and t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::93cc35f40670cb1b8f4645f2b78c7632
https://doi.org/10.1016/j.compstruc.2020.106476
https://doi.org/10.1016/j.compstruc.2020.106476