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J. Cent. South Univ. (2021) 28: 1875-1887 DOI: https://doi.org/10.1007/s11771-021-4736-4 Dynamic evolution of shear rate-dependent behavior of rock discontinuity under shearing condition GU Lin-lin..., earthquakes, or rock bursts. The shear rate-dependent behavior is a typical time-dependent behavior of a rock discontinuity, and it is closely related to the stability of a rock block. To further study......
-dependent elastic viscoplastic material model was used for the numerical simulation of the friction stir welding process. The non-elastic response of the rate-dependent material in the large... are greater than the ones behind the pin. This difference can be reduced with the decrease of viscosity. Key words: rate-dependent model; constitutive relationship; radial return mapping algorithm; friction......
was analyzed based on three dimensional lattice rotations calculated by using a rate-dependent crystal plasticity model and assuming five different combinations of slip modes.The results show...A Rate-Dependent Crystal Plasticity Analysis of Orientation Stability in Biaxial Tension of MagnesiumDonghong Zhang 1,2) and Saiyi Li 2) 1) School of Mechanical Engineering,South China University......
the observed rate-dependent fracture phenomena from static to high strain-rate impulse loading. LI and GU[11] got the constitutive equation for rock undergoing impacting by curve fitting. CHANG and YANG[12...] established the uniaxial and triaxial constitutive models of statically loaded rock under dynamic loading (coupled static-dynamic constitutive model) with intermediate strain rate, by way of combining statistic......
the high temperature gradient, the existing of liquid and solid regions and rolling deformation, suitable constitutive model is the key to describe the process. Anand’s model is a temperature-dependent, rate-dependent and unified of creep and plasticity model and the Jaumann derivative was employed in Anand’s model which makes the constitutive model frame-indifferent or objective, therefore......
into finite element analysis software [23] to describe the strain rate and temperature-dependent behavior of polymers. As for these generic models, precise results may not be easily obtained for a specific... and represent the instant stress, critical stress, viscosity coefficient and strain rate, respectively. The material model could be generally expressed by three components, i.e. the spring, viscous......
Trans. Nonferrous Met. Soc. China 24(2014) 509-513 Three-dimensional magnetotelluric regularized inversion based on smoothness-constrained model Xiao-zhong TONG1,2, Jian-xin LIU1, Rong-wen GUO1, Hai... structures were imposed to stabilize the inverse problem. By the smoothness-constrained model and approximate sensitivity method, the stable subsurface resistivity structures were reconstructed......
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Spatiotemporal model of open-pit based on 3-D deposit modelXIA Chun-lin1, ZHOU Hui1, LI Qing-yuan2, MA Zhen-li3(1. School of Geomatics, Liaoning Technical University, Fuxin 123000, China; 2. State... method was put forward to make up the three-dimensional deposit model, and the spatiotemporal models of open-pit with temporal dynamics were also studied combined with the corrected models......
A dynamic model for railway freight overbookingFENG Fen-ling(冯芬玲), ZHANG Jia-qi(张佳琪), GUO Xiao-feng(郭晓峰) (School of Traffic and Transportation Engineering, Central South University, Changsha 410075, China)Abstract:In order to apply overbooking idea in Chinese railway freight industry to improve revenue, a Markov decision process (dynamic programming) model for railway freight reservation......
