scholarly journals Man-Machine-Environment Virtual Design and JACK Simulation of Rosa Roxburghii Picking Machine

2020 ◽  
Vol 179 ◽  
pp. 01007
Author(s):  
Jianming Zhang ◽  
Bing luo
Keyword(s):  
Optimization Design ◽  
Design Method ◽  
Three Dimensional ◽  
Parametric Modeling ◽  
Simulation Software ◽  
Agricultural Machinery ◽  
Human Body Model ◽  
Virtual Design ◽  
Rosa Roxburghii ◽  
Machinery Design

In order to improve the coordination between human and agricultural machinery, taking Rosa roxburghii picking machine as an example, a virtual design method based on human-machine-environment system, combined with three-dimensional digital simulation technology and human skeleton biology and other disciplines is proposed. Three-dimensional parametric modeling of Rosa roxburghii picking machine is carried out by using three-dimensional engineering software. In JACK simulation software, a digital human body model is created to analyse the comfort, accessibility and visibility of the operator. The coordination degree of agricultural machinery design in the human-machine-environment system can be judged in advance, and targeted optimization design can be carried out to achieve the purpose of improving the coordination between human and machinery in the human-machine-environment system and reduce the accident rate. This method shortens the research and development cycle of agricultural machinery and provides a reference for humanized design of agricultural machinery design.

The Development of Virtual Design Platform for Couplings

2012 ◽  
Vol 580 ◽  
pp. 288-291
Author(s):  
De Gong Chang ◽  
Hong Yun Dou ◽  
Guang Zhen Zhou ◽  
Li Zeng Zhang
Keyword(s):  
Optimization Design ◽  
High Efficiency ◽  
Three Dimensional ◽  
Fem Analysis ◽  
Parametric Modeling ◽  
Virtual Design ◽  
Experiment Data ◽  
Virtual Technology ◽  
Analysis Experiment ◽  
Universal Coupling

This platform is based on virtual technology, taking the twin tripod slider universal coupling as three-dimensional solid model and integrating the functions of Pro/E and ANSYS. Using JAVA and VRML language develop and build the intelligent virtual design platform, which includes the parametric modeling, FEM Analysis, experiment data testing and optimization design. Based on this platform, we can achieve high efficiency of coupling’s design and research.

Research on Improved Method of Wind Turbine Airfoil S834 Based on Noise and Aerodynamic Performance

2015 ◽  
Vol 744-746 ◽  
pp. 253-258 ◽  
Author(s):  
Ya Qiong Chen ◽  
Yue Fa Fang
Keyword(s):  
Wind Turbine ◽  
Optimization Design ◽  
Design Method ◽  
Aerodynamic Performance ◽  
Parametric Modeling ◽  
Multi Objective ◽  
Wind Turbine Airfoil ◽  
Drag Ratio ◽  
Operating Points ◽  
Lift To Drag Ratio

In this paper, aerodynamic performance and noise of the wind turbine airfoil are the optimization design goal and based on this, the optimization design method with multi-operating points and multi-objective of the airfoils is built. The Bezier curve is used in parametric modeling of the contour of the airfoil and the general equation for control points is deduced form the discrete points coordinates of the airfoil. The weigh distribution schemes for multi-objective and multi-operating points are integrated designed by treating the NREL S834 airfoil as the initial airfoils. The results show that the lift-to-drag ratio of the optimized airfoils has a improvement around the designed operating angle and the overall noise has a reduction compared with the initial airfoils, which means that the optimized airfoils get a better aerodynamic and acoustic performance.

Application of Parametric Modeling in Optimization Design on Aluminum Alloy Wheels

2012 ◽  
Vol 178-181 ◽  
pp. 2834-2836
Author(s):  
Deng Li Yi
Keyword(s):  
Aluminum Alloy ◽  
Optimization Design ◽  
Three Dimensional ◽  
Parametric Modeling ◽  
Dimensional Model ◽  
Material Consumption ◽  
Three Dimensional Model ◽  
Long Period ◽  
Alloy Wheel

With the development of lightweight car，the applications of aluminum alloy wheels are changed extensively. At present, there are many disadvantages in aluminum alloy wheel profession of my country such as the blindness in design, the long period, material consumption, the high cost and so on. In this paper, the CAD as well as the FEA technology is applied. The parametric three-dimensional model of aluminum alloy wheel is constructed using UG software. Taken the former's thickness and the angle between two formers as variables, the wheels with different sizes and shapes are established. Automobile aluminum alloy wheel hub is built and this is helpful to the development of CAE / CAM in the aluminum alloy wheel design.

Study on the Safety Design of Main Arm Mechanism in Slag Pot Carrier

2012 ◽  
Vol 233 ◽  
pp. 380-383
Author(s):  
Rui Guo ◽  
Jing Yi Zhao ◽  
De Cai Han ◽  
Yong Chang Wang
Keyword(s):  
Optimization Design ◽  
Three Dimensional ◽  
Arm Movement ◽  
Load Force ◽  
Weak Links ◽  
Virtual Design ◽  
Upper Arm ◽  
Element Analysis ◽  
Internal Parameters ◽  
Structure Strength

According to the new kind of the upper arm mechanism of the slag pot carrier, optimization design, simulation and experimental research are carried out, in which the combination of conventional design, three dimensional virtual design and experimental study are applied. The motion law of multi-segment arc slide way of main arm is given by means of researching the motion process of slag ladle in the main arm slide way. The functional relationship among the internal parameters of the arm mechanism, and between load force and arm movement is revealed by studying kinematics of mechanism and dynamics law of the upper arm mechanism. The finite element analysis of the upper arm mechanism is carried out to get the weak links of structure strength, and then the improvement solution is proposed. After experiments, the method correctness of optimization and design of upper arm mechanism is testified by the coincidence of the trial results and experimentation results.

The Virtual Optimization Design on the Variable-Pitch Actuator of Wind Turbine

2013 ◽  
Vol 827 ◽  
pp. 302-308
Author(s):  
Tao Sun ◽  
Lu Fang Qin
Keyword(s):  
Dynamic Simulation ◽  
Optimization Design ◽  
Simulation Analysis ◽  
Three Dimensional ◽  
Hydraulic Cylinder ◽  
Optimized Design ◽  
Connecting Rod ◽  
Virtual Design ◽  
Variable Pitch ◽  
Three Dimensional Modeling

According to the load calculation of blade, the required maximum torque of rotational blade is obtained. A mathematic analysis method can be used to deduce the following results: the thrust of hydraulic cylinder is related to crank length, the connecting rod length, the eccentricity, the installation angle, and the variable-pitch driving force. Finally, the optimal values of pitch-controlled actuator are obtained. Based on three-dimensional modeling, assembly and dynamic simulation analysis, the virtual design of variable blade pitch mechanism is completed by using the software Pro/E. By means of dynamic simulation analysis, the rationality of this design is verified, facilitating the further on development mechanism's optimized design.

Optimization Design of Coordinate Measuring Machine Based on ANSYS Software

2010 ◽  
Vol 42 ◽  
pp. 453-456
Author(s):  
Yong Gang Yan ◽  
Yan Qin Li ◽  
Zhan Kui Wang
Keyword(s):  
Optimization Design ◽  
Large Scale ◽  
High Efficiency ◽  
Design Method ◽  
Three Dimensional ◽  
Coordinate Measuring Machine ◽  
National Defense ◽  
Three Dimensional Model ◽  
Element Analysis ◽  
Measuring Machine

Coordinate measuring machine (CMM) is a large-scale geometrical detecting instrument. It is of high accuracy, high efficiency simple operation and automation. So, it can ensure the product quality for modern mechanical manufacture industry, and is widely used in the industry such as aircraft, automobile, military and national defense. However, it does not meet gradually the requirement of modern industry because of its measuring accuracy. How to monitor geometrical error rapidly and high accurately is a key research project. To solve the problem, some studies have been carried out. In this paper, a coordinate measuring machine was firstly designed by modern design method. Three dimensional model is built using PRO/E software. And some key components were optimized by using finite element analysis method. The simulating results show that the size and structure of the designed coordinate measuring machines are optimized and improved relate to previous CMM. This study will play an important instructing role for us in studying a novel CMM.

The Virtual Design of Cluster Straw Fuel Briquetting Machine

2011 ◽  
Vol 299-300 ◽  
pp. 925-928
Author(s):  
Feng Hui Wang ◽  
Zhao Ying Tian
Keyword(s):  
Finite Element Method ◽  
Design Method ◽  
Three Dimensional ◽  
Biomass Energy ◽  
Strength Analysis ◽  
The Finite Element Method ◽  
Virtual Design ◽  
Design Data ◽  
Forming Technology ◽  
New Type

Biomass forming technology is an effective way of using biomass energy. Based on the relative technology information from the home and abroad, the “cluster straw” as a new type of fuel briquetting machine has been proposed. According to many kinds of test data forming straw fuel briquetting machine, the force and power parameters were determined. By using the three-dimensional design method, the virtual design molding of cluster straw fuel machine is built. The strength analysis has been done on finger wheel by the finite element method, which came to valuable design data to referring to; wheel-shaped structure was modified to improve the strength.

Research on the Relation between Automotive Air Conditioning Supply-Air Direction and Cooling Efficiency about Thermal Field of the Passenger Compartment

2014 ◽  
Vol 472 ◽  
pp. 191-197
Author(s):  
Ran Duan ◽  
Jin Fa Xie ◽  
Hong Chao Wang
Keyword(s):  
Design Method ◽  
Rbf Neural Network ◽  
Three Dimensional ◽  
Approximate Model ◽  
Vertical Surface ◽  
Equation Model ◽  
Simulation Software ◽  
Approximation Model ◽  
Passenger Compartment ◽  
Unsteady Temperature

The cooling process of unsteady temperature field in the automobile passenger compartment is simulated , making use of computational fluid dynamics software FLUENT and the algorithm of PBCS ,and two equation model is replaced with the three-dimensional turbulence model. And then the workflow is established, which includes DOE, optimization algorithm, approximate model and the numerical simulation. Numerical simulations uses experimental design method to collect data for analysis into the relations and trends of the supply-air direction and the cooling efficiency.The sample points train approximation model, using radial basis function (RBF) neural network approximation model instead of the high cost of the simulation calculation. Multi-island GA is chosen to optimize the supply-air direction. The supply-air direction optimized and the supply-air direction vertical surface of inlet tuyere are calculated by simulation software respectively.Results show that the optimized direction making the car chamber cooling effect is remarkable, by the analysis of the heat flow value and temperature contours of before and after optimization.

scholarly journals Structural optimization design and heat transfer characteristics of multi-degree-of-freedom spiral plate type agricultural machinery equipment heat exchanger

2019 ◽  
Vol 23 (5 Part A) ◽  
pp. 2525-2533
Author(s):  
Zhenyu Wang ◽  
Jie Wang ◽  
Ma Yunhai ◽  
Lining Wang
Keyword(s):  
Heat Transfer ◽  
Numerical Simulation ◽  
Heat Exchanger ◽  
Optimization Design ◽  
Transfer Effect ◽  
Simulation Software ◽  
Degree Of Freedom ◽  
Agricultural Machinery ◽  
Spiral Plate ◽  
Plate Type

In agricultural equipment, heat exchangers are mainly used for heat exchange and full utilization. Based on the theory of enhanced heat transfer, we establish a reasonable mathematical model and physical model for the multi-degree-of-freedom spiral plate type agricultural machinery heat exchanger, and use the FLUENT numerical simulation software to add the spiral disturbing fluid to the spiral plate heat exchanger flow channel. Numerical simulation and further optimization simulation of the fluid-conducting conditions with poor heat transfer effect were carried out, and an optimal arrangement of two kinds of spiral-shaped turbulent fluids with constant curvature and variable curvature was determined. The heat transfer effect of the fixed-curvature spiral-shaped disturbing fluid is superior. Further optimize the structure of the disturbing fluid. When the diameter of the disturbing fluid increases, the heat transfer can be enhanced; thus, the diameter of the disturbing fluid plays an important role in enhancing the heat transfer effect.

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