Papers by Keyword: Dynamic Equilibrium

Abstract: This paper presents design of a novel submerged Kuroshio generator system (SKGS) which is suitable for maritime environments near Keelung Sill. The SKGS was combined with a reliable cable design and a simple anchor system at sea, and it could ignore changes of yaw and roll motion through a proper rudder design. An intuitive simulation method adopted MapleSim software to create a rigid structure modeling of the SKGS. Different modeling frameworks for varied cable design and joint positions were adjusted to meet with the system requirements. Therefore, the system requirements of stability, dynamic equilibrium analysis, and motion behavior of the SKGS combined with the cable design were achieved in this study. Furthermore, the motion ranges of surge-axis and heave-axis could be converged within 0.5 m, and the estimated output power of the SKGS could exceed in 55.1 KW.

Abstract: Solid-phase microextraction (SPME) is a rapid sample preparation in volatile analysis. The aromatic volatile compositions of ‘Kuerle’ were analyzed using SPME and gas chromatography-mass spectrometry (GC-MS). The effect of different types of fibers, extraction time, and extraction temperature on the volatile results were compared and discussed. The results were as followed. Results showed that 65μm PDMS/DVB fiber had the best effect of extraction. The optimum factors such as extraction time and temperature were 45 min and 40°C.

Abstract: The multi-object application of the Xiaolangdi Reservoir and water and sediment regulation have greatly changed flow and sediment conditions emptying into the Yellow River Estuary. By use of flow and sediment field data at the Lijin Hydrological Station and river cross-section elevation data during 2001~2010, the paper has analyzed characteristics of the Yellow River Estuary in terms of incoming flow and sediment conditions, main flume area, average river longitudinal section and river length. The results show that annual total water volume emptying into the Estuary since 2003 has maintained about 200×10⁸ m³, annual total sediment 1.77×10⁸ t, whole annual average sediment concentration 9.3kg/m³, which are stable and beneficial for dynamic equilibrium of sediment transport. Interannual stability of main flume area, average river bed elevation and river length since the Lijin Section during 2007-2010 indicate that current Qingshuigou Course of the Yellow River has achieved dynamic equilibrium of sediment transport.

Abstract: The paper is mainly about reviewing on static phases of materials as numeric analyzing with its comparison to dynamical phases. All of analyzes are with based on dynamical and static equilibrium and its mode revision. Also, states changing in materials and their physical – chemical transfer changes have been covered by defined properties in this paper. We use some numeric solutions such as Boltzmann method in analyzing states in this paper.

Abstract: The crux feature of this paper is the equations of motion in a structural dynamics with respect to single reference frame that can be easily derived, and the results are well defined and converged. However, problem occurs, when the analysis of any complex, complicated structure is considered and its equation of motion is extracted with respect to single reference frame. The results are indecipherable, ambiguous and less converged. Thus, for such a complex structure, the results obtain with respect to multiple reference frames. In present study, an approximated model with a set of lumped masses, properly interconnected, along with discrete spring and damper elements are in consideration for continuous vibrating system. This results in dynamic equilibrium, which in turn results in formulation and idealization. As, rightly said by scientist Steve Lacy- “To me, there is spirit in a reed. It is a living thing, a weed, really and it does not contain spirit of sort. It’s really an ancient vibration”

Abstract: Application prospect of the superfine cellulosine with sub-nanometer was analyzed; technology of the electric spindle was applied into the schizolysis crusher machine. One schizolysis crusher that could manufacture the superfine cellulosine with sub-nanometer relying on wedge structure constituted the special structure to form dynamic pressure effect with high pressure using shearing action between milling cutter with high-speed and stationary cutter. The experimental results showed that size of the cellulosine formed by the schizolysis cruser has reached 2400 items, thus, a new manufacturing method on superfine cellulosine with sub-nanometer dimension was obtained, which provided the practical basis for development and application of manufacturing technology with the superfine cellulosine with sub-nanometer in our country.

Abstract: Visible waviness on the ball bearing’s outer ring groove, which processed by groove grinder, results in a lower precision of post processing. To reduce the waviness, some experiments are conducted to analyze the property of grinder structure. Accord to analysis result, a modification scheme is provided. In scheme an equilibrant device is designed on the grinding wheel shaft, and rotation of grinding wheel shaft with equilibrant device is simulated with the MSC.visualNastran software.