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There will always have a greater residual stress in the processing process of the micromechanical gyroscopes straight elastic-beam. affecting the performance of micromechanical gyroscopes. According to the principle of stiffness equivalence, the original elastic-beam of the micromechanical gyroscope is improved to the beam of drive as the U-beam and sense as the carb-leg beam by the combination of...
Multi-degree of freedom manipulators have become a hotspot in the field of robotics because of many advantages. In this paper, a 5-DOF manipulator was taken as the object of study. The modal analysis on it was carried out by methods of test and finite element analysis. A model updating method based on sensitivity analysis was put forward, and the final finite element model was established by iterative...
The dynamic response analysis to simulate the complicated working condition can ensure the high reliability of space products' design. In this paper, we focus on the solar array of a satellite, and gain equivalent mechanical parameters of its internal honeycomb panel's construction. We build an accurate finite element model, and perform modal analysis and frequency response analysis as well. By contrast,...
It is very important to analyze the dynamic characteristics for the crankshaft during the working process. By use of ANSYS software of finite element model of the crankshaft modal analysis to get the top 20 order natural frequency and the corresponding vibration mode, and put forward the possible resonance risk and design concerns. It has some guiding significance for the design and manufacture of...
In order to obtain the natural frequency and the vibration mode of rectifier cabinet for nuclear power generating stations, the vibration theory of the structural morphology is elaborated, the natural frequency of the cabinet is researched, and the finite element model of the cabinet is set up by ANSYS. The natural frequency and the vibration mode of the rectifier cabinet for nuclear power generating...
High-voltage disconnectors are the largest and most important primary device in the transformer substation. There are many problems during the closing of the disconnector, such as not in place, over the place, the contactor is loose and so on. This paper presents the Finite Element Analysis (FEA) of disconnector GW4D-126D(W) under different closing states performed by ANSYS Workbench. The experimental...
In this paper, we propose lumped methods of flexible elements of Flexible-Link manipulator to Flexible-Joint, and compare their performance evaluation to suggest the most suitable modeling method. The first method is to obtain the Equivalent Stiffness through the static analysis of Flexible-Link. The second method is to obtain the natural frequency through the modal analysis of the Flexible-Link System...
Torsion links are components which couple inner and outer cylinders of a landing gear mechanism. They prevent torsion or twisting between the cylinder and piston components in the structure. The integrity of this component is essential to prevent shimmy vibrations in an aircraft landing gear. Failure of this component is thus catastrophic for the aircraft. The typical geometry of torsion link of a...
This paper proposes a nano-positioning system driven by a high force density voice coil motor (VCM) and supported by a complex parallel four-bar flexure mechanism. The VCM employs bilateral Halbach permanent magnet (PM) arrays and triple-segment coils to achieve high force-current ratio and low force ripple. Complex parallel four-bar flexure mechanism is designed to obtain high stiffness and good...
Large reflector antennas have been widely used in satellite communications, deep-space exploration, and so on. The pointing accuracy in these applications is required to be quite high as the beams involved are narrow. The pointing accuracy, however, may be influenced by wind disturbance, especially in those with a low natural frequency and constructed without a radome. Furthermore, it is difficult...
The reasonable establishment of rotor dynamics model is very important in the study. This paper establishes a dynamic model of the rotor, and gets the numerical calculation of the frequencies and mode shapes of the rotor under the free condition. The modal of the rotor bearing system is analyzed by using software. Compared to the above two kinds of results, the test of turbocharger rotor mechanics...
This paper presents a multidisciplinary design analysis method for permanent magnet (PM) motors with soft magnetic composite (SMC) cores. Firstly, a multidisciplinary design analysis process is investigated to evaluate the performance of these motors, which includes electromagnetic analysis (based on new core loss model), thermal analysis, and mechanical modal analysis. Then a lumped 3-D thermal network...
According to the mechanical failure of Gas Insulated Switchgear (GIS) in the earthquake will cause a great loss to the power system. This paper, by using the three-dimension design software to build a geometric model of 420 kV GIS, by using the finite element analysis method to make the mode analysis, and then acquired structural frequencies and mode features of the GIS, and by using spectral analysis...
3D modeling of pipe-die for pre-stressed concrete centrifugal square pile is conducted basically using CATIA software in this paper. The developed digital model is imported to ANSYS software for vibration modal analysis, thus gaining natural vibration frequency of each order of pipe-die and the corresponding vibration mode. Finally, valuable suggestions on the structure design of centrifuge have been...
The grate bar is one of the important parts of the inertia resonance probability screen system, which is the main component of coal unloading system in the power plant. Therefore, the dynamic characteristic of the grate bar is studied in this paper. Based on the 3D model, the theory modal analysis of the inertia resonance probability screen grate bar was conducted with ANSYS software and the experimental...
Chassis is one of the key components of tracked test vehicle. The strength and rigidity of chassis must be considered and structure resonance should be avoided during the process of structure design. The stress nephogram and strain nephogram of chassis are obtained, after static analysis in the finite element analysis software ANSYS. The maximum stress is 65.13MPa and the maximum strain is 0.00032mm...
The 3D model of machine tool column of YKS5120BX3 NC gear shaper is created in Pro/E. This model is imported into the ANSYS by IGS file. The column structural static stress and deformation, the five-order modal natural frequencies and mode of vibration are obtained by ANSYS static and dynamic analysis. Based on the analysis results, this study offers a kind of reference comments for the design and...
In order to investigate the performance of the high-speed electric spindle, the static and dynamic characteristics of the spindle are analyzed by using the finite element analysis method in this paper. For obtaining the static deformation and static stiffness of the spindle, static analysis of the spindle is carried out based on a simpLified static analysis model through using the software of ANSYS...
With large scale increases of the train speed, it is of great practical significance to develop a fatigue test stand for high-speed train's transmission system. 3-DOF (three degree-of-freedom) electro-hydraulic shaking table for high-speed train's transmission system fatigue test is designed and its three dimensional mathematical model is established in this paper. In addition, static analysis and...
We present the design, modeling and characterization of a 3-phase electrostatic rotary stepper micromotor. The proposed motor is a monolithic device fabricated using silicon-on-insulator (SOI) technology. The rotor is suspended with a frictionless flexural pivot bearing and reaches an unprecedented rotational range of 30° (+/- 15°) at 65 V. We have established a mechanical model of the deformation...
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