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Yu Mao-Hong (, b. 1934) is a Chinese engineer and a university professor. He is noted for his research on the strength criteria and yield surfaces of isotropic materials. His unified strength theory (UST) has found acceptance as generalized classical strength theory. It contains the following strength theories (hypotheses) and criteria as a function of the equivalent stress without any additional parameters:
* the normal stress theory (the William John Macquorn Rankine hypothesis),
* the
Yu Mao-Hong (, b. 1934) is a Chinese engineer and a university professor. He is noted for his research on the strength criteria and yield surfaces of isotropic materials. His unified strength theory (UST) has found acceptance as generalized classical strength theory. It contains the following strength theories (hypotheses) and criteria as a function of the equivalent stress without any additional parameters:
* the normal stress theory (the William John Macquorn Rankine hypothesis),
* the Tresca yield criterion
A yield surface is a five-dimensional surface in the six-dimensional space of Stress (mechanics), stresses. The yield surface is usually convex polytope, convex and the state of stress of ''inside'' the yield surface is elastic. When the stress ...
,
* the Sokolovsky regular dodecagon in the π-plane as approximation of the von Mises yield criterion
The maximum distortion criterion (also von Mises yield criterion) states that yielding of a ductile material begins when the second invariant of deviatoric stress J_2 reaches a critical value. It is a part of plasticity theory that mostly applie ...
, and
* the Schmidt-Ishlinsky yield criterion
and three one-parameter (in addition to the equivalent stress ) criteria:
the Mohr–Coulomb theory
Mohr–Coulomb theory is a mathematical model (see yield surface) describing the response of brittle materials such as concrete, or rubble piles, to shear stress as well as normal stress. Most of the classical engineering materials follow this r ...
(Single-Shear-Theory (SST)), the Sdobyrev (Pisarenko-Lebedev)Pisarenko, G. S., Lebedev, A. A.. (1976). ''Deformation and Strength of Materials under Complex Stress State (in Russ.: Deformirovanie i prochnost' materialov pri slozhnom nap\-rjazhennom sostojanii)''. Naukowa Dumka, Kiev. criterion, and the Twin-Shear-Theory (TST). The Unified Yield Criterion (UYC) as a part of the UST is used in the theory of plasticity (physics)
In physics and materials science, plasticity, also known as plastic deformation, is the ability of a solid material to undergo permanent Deformation (engineering), deformation, a non-reversible change of shape in response to applied forces. F ...
.
Curriculum vitae
* 1951–1955 student at Zhejiang University, Hangzhou * 1955–1959 assistant at Zhejiang University, Hangzhou * 1960–1966 lecturer at Xi'an Jiaotong University, Xi'an * 1978–1980 lecturer at Xi'an Jiaotong University, Xi'an * 1981–1984 associate professor at Xi'an Jiaotong University, Xi'an * 1985 till now professor at Xi'an Jiaotong University, Xi'anSelected books
* ''Introduction to Unified Strength Theory''. Mao-Hong Yu, Shu-Qi Yu, CRC Press, London, 2019, * ''Unified Strength Theory and Its Applications'', Second Edition. Mao-Hong Yu, Springer, Singapore, 2017, , * ''Computational Plasticity: With Emphasis on the Application of the Unified Strength Theory (Advanced Topics in Science and Technology in China)''. Mao-Hong Yu, Jian-Chun Li, Springer, Berlin, 2012, * ''Generalized Plasticity''. Mao-Hong Yu, Guo-Wei Ma, Hong-Fu Qiang, Yong-Qiang Zhang, Springer, Berlin, 2010, * ''Structural Plasticity: Limit, Shakedown and Dynamic Plastic Analyses of Structures (Advanced Topics in Science and Technology in China)''. Mao-Hong Yu, Guo-Wei Ma, Jian-Chun Li, Springer, Berlin, 2009, * ''Generalized Plasticity''. Mao-Hong Yu, Guo-Wei Ma, Hong-Fu Qiang, Yong-Qiang Zhang, Springer, Berlin, 2006, ; 978-3-540-25127-9 * ''Unified Strength Theory and Its Applications''. Mao-Hong Yu, Springer, Berlin, 2004, * ''Computational Plasticity (in Chinese)''. Mao-Hong Yu, Li Jian Chun, Springer, Berlin, 2000 * ''Engineering Strength Theory (in Chinese)''. Mao-Hong Yu, Higher Education Pressress, Beijing, 1999 * ''Researches on the Twin Shear Stress Strength Theory (in Chinese)''. Mao-Hong Yu, Xi'an Jiaotong University Press, Xi'an, 1988Selected articles
* General behaviour of isotropic yield function (in Chinese: 各向同性屈服函数的一般性貭 - 俞茂鋐. Mao-Hong Yu, ''Scientific and Technological Research Paper of Xi'an Jiaotong University'', Xi'an, 1961, pp. 1–11 * Brittle fracture and plastic yield criterion (in Chinese: 各向同性屈服函数的一般性貭 (双切屈服准則及其流动規律). Mao-Hong Yu, ''Scientific and Technological Research Paper of Xi'an Jiaotong University'', Xi'an, 1962, pp. 1–25 * Twin shear stress yield criterion. Mao-Hong Yu, ''Int. J. Mech. Sci.'', 1(25), 1983, pp. 71–74 * Advances in strength theories for materials under complex stress state in the 20th century. Mao-Hong Yu, ''Applied Mechanics Reviews'', 5(55), 2002, pp. 169–218 * Linear and non-linear Unified Strength Theory (in Chinese). Mao-Hong Yu, ''Journal of Geotechnical Engineering'', 4(26), 2007, pp. 662–669 * Basic characteristics and development of yield criteria for geomaterials. Mao-Hong Yu, Xia, G., Kolupaev, V. A., ''Journal of Rock Mechanics and Geotechnical Engineering'', 1(1), 2009, pp. 71–88, * Unified Strength Theory (UST). Mao-Hong Yu, ''Rock Mechanics and Engineering'', Volume 1: Principles, Editor: Xia-Ting Feng, pp. 425–450, CRC Press, London, 2017,Awards
* 2011: National Natural Science Award, China * 2014: Excellent Article Award, Journal of Rock mechanics andGeotechnical Engineering
Geotechnical engineering is the branch of civil engineering concerned with the engineering behavior of earth materials. It uses the principles of soil mechanics and rock mechanics for the solution of its respective engineering problems. It als ...
* 2015: Ho Leung Ho Lee Foundation
The Ho Leung Ho Lee Foundation (HLHL, ) is a Hong Kong-based non-government organisation which annually bestows prizes upon Chinese scientists. It was established on 30 March 1994, with funds donated from the charitable foundations of Ho Sin Han ...
Price, China
References