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J. Cent. South Univ. Technol. (2007)01-0135-05 DOI: 10.1007/s11771-007-0027-y Dynamic analysis and modal test..., respectively. An identification method about modal parameters was put forward by combining method of peak value and power spectral density according to modal test under ambient excitation. The dynamic......
scattered diffraction (EBSD), electro-probe microanalyzer (EPMA) and transmission electron microscopy (TEM). It is shown that dynamic recovery is the dominant softening mechanism at high Zener-Hollomon (Z...) and (f)). It is likely that for high Z values dynamic recovery (DRV) is the dominant softening mechanism, and for low Z values both DRV and DRX make contribution to softening during deformation......
magnetic field (LFEMC) were studied through thermal simulation tester Gleeble-1500D.The results show that there exist obviously dynamic recovery and dynamic recrystallization (DRX) during thermal compression of the LFEMC AZ41 magnesium alloy. The dynamic recovery is prominent character at 453-523K, but DRX is prominent behavior at 593-723K. The flow process is the most stable and the microstructures......
below the Mf temperature and above the Af temperature, respectively. The annealed ribbon exhibits up to 1.6% superelastic shape recovery with small stress hysteresis of 25 MPa. No flat stress-plateau is associated with the superelasticity. The annealed ribbon shows a well-defined shape memory effect during thermal cycling from -60 to 100 ℃. The transformation strain and recovery strain increase......
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Effects of heat treatment on dynamic compressive properties and energy absorption characteristics of open-cell aluminum alloy foams CAO Xiao-qing(曹晓卿)1,2, WANG Zhi-hua(王志华)2, MA Hong-wei(马宏伟)2...; Abstract: The effects of heat treatment on the dynamic compressive......
J. Cent. South Univ. (2016) 23: 370-378 DOI: 10.1007/s11771-016-3082-4 Trajectory tracking control for underactuated unmanned surface vehicles with dynamic uncertainties LIAO Yu-lei(廖煜雷)1, ZHANG... problem of the trajectory tracking error equation. A backstepping adaptive sliding mode controller was proposed based on backstepping technology and method of dynamic slide model control. By means......
Polytechnical University, 2001, 19(3): 476-479. [13] NEMAT-NASSER S, ISAACS J B, STARRETT J E. Hopkinson techniques for dynamic recovery experiments[J]. Proceedings of the Royal Society London, 1991, 435...于准静态下的真应力;获得TC16动态本构关系,能较好地预测TC16钛合金的流变应力. 关键词:TC16钛合金;动态本构关系;Hopkinson压杆试验;应变速率;温度 中图分类号:TG 113.2 文献标识码:A Dynamic constitutive relationship of TC16 titanium alloy based......
J. Cent. South Univ. (2012) 19: 2238-2246 DOI: 10.1007/s11771-012-1268-y Vibration-based feature extraction of determining dynamic characteristic for engine block low vibration design DU Xian-feng(杜宪... and Springer-Verlag Berlin Heidelberg 2012 Abstract: In order to maintain vibration performances within the limits of the design, a vibration-based feature extraction method for dynamic characteristic......