Yan Jue Gong

Modeling and Simulation Research of Time-Dependent Reliability Model of Link Rod in Needle Bar Mechanism

The time-dependent reliability model of Mechanical Component is influenced by many parameters such as stress, load, strength, strength degeneration and lifetime index. This paper builds the time-dependent reliability model when life is measured by the loading numbers. The variety law of mechanical component’s reliability with the lifetime is derived from the built model and simulation of link rod in needle bar mechanism used in the sewing machine. The result shows that the time-dependent reliability model is effective and the reliability of component decreases obviously with the loading numbers when the strength degeneration is considered.

Research on the Variety Law of Time-Dependent Reliability Model of Picking Link Rod in Sewing Machine

The reliability of mechanical component is a time-varied process because the parameters such as operation condition, load, strength, are varied with time or the loading numbers. This paper builds the time-dependent reliability model when life is measured by the loading numbers. The variety-law of component’s reliability with the lifetime is derived from the built model and simulation of picking link rod used in sewing machine. It is shown that the time-dependent reliability model is effective and the reliability of component decreases obviously with the time and the increasing load standard deviation.

Modeling and Simulation Research of Time-Dependent Reliability Model of Tooth Carrier in Feed Mechanism

The time-dependent reliability model of Mechanical Component is influenced by many parameters such as stress, load, strength, strength degeneration and lifetime index. This paper builds the time-dependent reliability model when life is measured by the loading numbers. The variety law of mechanical component’s reliability with the lifetime is derived from the built model and simulation of tooth carrier in feed mechanism used in the sewing machine. The result shows that the time-dependent reliability model is effective and the reliability of component decreases obviously with the loading numbers when the strength degeneration is considered.

Finite Element Analysis of Tube Tower for Vertical Axis Wind Turbine

It is very significant for the vertical axis wind turbine to design the best support structure with high strength and stiffness. This paper discusses modeling a kind of tube tower structure of the vertical axis wind turbine and carries out static and modal analysis based on the finite element method. The static and modal characteristic of tube tower such as stress, strain and mode shapes are obtained accurately which can provide basis to optimal design the support structure for vertical axis wind turbine.

Static and Dynamic Characteristic Analysis of the Tower for Vertical Axis Wind Turbine Based on Finite Element Method

As an important part of the vertical axis wind turbine, the support structure should have high strength and stiffness. This article adopts finite element method to model a kind of tower structure of the vertical axis wind turbine and carry out static and modal analysis. The static and dynamic characteristic results of tower in this paper provide reference for optimization design the support structure of wind turbine further.

Modal Analysis of High-Speed Traction Motor Rotor Shaft

Being one of the key parts in high-speed traction motor ,rotor shaft has a great influence on the dynamic characteristics of high-speed traction motor. This paper uses the UG to establish a simplified model of high-speed traction motor rotor shaft. The modal parameters were calculated and its inherent frequency characteristics were investigated with the analysis software MSC.Nastran. And we also analyze and calculate the foregoing five model shape of high-speed traction motor rotor shaft. These can provide a basis for the optimization design of high-speed traction motor rotor shaft and its dynamics analysis.

Dynamics Analysis of Refrigeration Compressor Based on Finite Element and Experimental Modes

Based on the 3D model of refrigerations compressor by Pro/E software, the analyses of theoretical and experimental mode are carried out in this paper. The results show that the finite element models of compressor have high precision dynamic response characteristics and the natural frequency of the compressor, based on experimental modal analysis, can be accurately obtained, which will contribute to further dynamic designs of mechanical structures.

Structure Analysis and Simulation of Chemical Sensor for Food Safety Detection

The structure of chemical sensor has great influence on the performance of the sensor. This article studies on the relationship between the structure parameter and the mechanical characteristics of the sensor. The original resonance frequency and modes shape of the structure are obtained by the finite element analysis. Then a series of simulation comparison analyses are carried out to verify that the performance of modified sensor structure for food safety detection is improved greatly, which provides a good guide for the design of MEMS chemical sensor further.

Optimization Design of MEMS Thermal Actuator for Food Industry

Micro-actuator is the key device for the MEMS to perform physical functions. According to a kind of bimorph thermal actuator, this article presents an optimum design method to improve the sensitivity of MEMS actuator. Based on thermal analysis of software ANSYS, the thermal displacement and distribution of temperature field can be obtained clearly. Then a series of reasonable parameters are determined by optimum calculation. The simulation comparison analyses including thermal displacement, stress distribution and fatigue life are carried out to demonstrate that the sensitivity of the optimized structure has been improved effectively by the presented optimization method.

Finite Element Analysis of Pixel Structure of Uncooled Microbolometer for Food Operation Environment

Uncooled infrared bolometer arrays have become mainstream low-cost thermal detector used in applications such as firefighting, security and surveillance, and environment temperature control for food operation. In order to resolve the pixel structure’s stress problem of microbolometer, this paper adopts finite element analysis method to model and analyze the mechanical properties of pixel structure. Several results of the stress and displacement are presented and the influence of structure optimization on the stress is also analyzed quantitatively. The research provides a good foundation and mechanics reference for mechanical design of uncooled microbolometer.