OPTIMAL DESIGN ON MOVING AND STRUCTURAL PARAMETERS OF CRANKSHAFT CHAMFER ROLLING

2002 ◽  
Vol 38 (01) ◽  
pp. 146 ◽  
Author(s):  
Longquan Xue
Keyword(s):  
Optimal Design ◽  
Structural Parameters

scholarly journals Optimal Design and Simulation Analysis of Spike Tooth Threshing Component Based on DEM

Processes ◽  
2021 ◽  
Vol 9 (7) ◽  
pp. 1163
Author(s):  
Yajun Yu ◽  
Liangshan Li ◽  
Jiale Zhao ◽  
Xiangeng Wang ◽  
Jun Fu
Keyword(s):  
Optimal Design ◽  
Simulation Analysis ◽  
Process Analysis ◽  
Structural Parameters ◽  
Compressive Force ◽  
Microscopic Analysis ◽  
Analysis Software ◽  
Damage Rate ◽  
Tooth Type ◽  
Simulation Time

This paper takes a local drum-type corn thresher as an example. In order to make the threshing principle transform to the plate-tooth type, the width of the spike-tooth threshing component is increased gradually, and three threshing components of different shape and size are selected as the research objects. Based on the preliminary experimental research, the corn threshing process is simulation analyzed using the self-developed corn threshing process analysis software. The effects of the width of the threshing component on the corn ears threshing rate and kernel damage rate under different rates of drum rotation were studied from a macroscopic perspective. The results show that with the increase of drum rotation rate, both the corn ear threshing rate and kernel damage rate increase; with the increase of threshing component width, the threshing rate increases and the damage rate decreases; and when the component width is too large, the stacking between adjacent components has an impact on the threshing performance. The effects of threshing component width on the amount of kernel threshing and the total compressive force during the simulation time were investigated from microscopic perspective at different rates of drum rotation, and the results show that the microscopic analysis is consistent with the macroscopic analysis. Therefore, the optimization of the structural parameters and operating parameters of the threshing component was achieved. When the width of the threshing component was 25 mm and the roller speed was 187.50 rpm, the threshing performance was optimal, with a 98.04% corn ears threshing rate and a 2.56% kernel damage rate. This paper verifies the practical applicability of the corn threshing process analysis software and provides a reference for the optimal design of threshing devices.

Optimal Design of Composite Material Maintenance Structure for Aircraft Based on ANSYS Workbench

2021 ◽  
Vol 871 ◽  
pp. 216-221
Author(s):  
Jing Tao Dai ◽  
Pei Zhong Zhao ◽  
Hong Bo Su ◽  
Hao Dong Liu ◽  
Yu Bo Wang ◽  
...  
Keyword(s):  
Finite Element ◽  
Composite Material ◽  
Optimal Design ◽  
Structural Characteristics ◽  
Structural Parameters ◽  
Element Model ◽  
Composite Cement ◽  
Composite Patch ◽  
Length Width ◽  
Ansys Workbench

Composite material is widely used to maintain damaged structures of aircraft. The 3D finite element model of composite cement maintenance for aircraft is established by finite element method software ANSYS Workbench. The structural characteristics and usage status of the composite cement maintenance model is analyzed, and then the optimal structural parameters of the composite patch are obtained, including the length, width and thickness. The results show that the composite cement maintenance method could effectively restore the rigidity, and improve the strength of the structure. Furthermore, the optimal design for composite patch ensures safety of aircraft, economics of maintenance, and operability of repair methods.

scholarly journals Optimal Design of Multi-section Proportional Directional Valve Throttle Grooves with Artificial Neural Networks

2018 ◽  
Vol 237 ◽  
pp. 03003 ◽  
Author(s):  
Xiaolu Zhang ◽  
Anlin Wang ◽  
Jiangwei Tang
Keyword(s):  
Optimal Design ◽  
Design Method ◽  
Structural Parameters ◽  
Three Dimensional ◽  
Flow Stability ◽  
Complex Flow ◽  
Physical Test ◽  
Flow Field Characteristics ◽  
Structure Boundary ◽  
Proportional Directional Valve

This paper presents a method for design multi-section proportional directional valve Throttle grooves with ANN method, which aims at getting a better flow stability. There exists a coupling matter during the opening and closing process between the throttling notches, so that it’s difficult to parameterize the complex flow field characteristics Cd and the structure boundary of the spool grooves. However, in this paper, an ANN was built with data from CFD results, while the typical structural parameters (U type, the O-type and C-type), operating parameters was input vectors, the discharge coefficient as output vectors. Meanwhile, all of the needed data is taken from the three-dimensional CFD analysis, which are organized properly and verified by a bench scale test on a rig. Then, with throttling stiffness as optimization objective to evaluate flow stability, an optimal design process is carried out to optimize to optimize the structure of coupling grooves with ANN models and genetic algorithm. Ultimately, the optimized structure is verified better by the physical test on test rig, therefore, the significance of design method is proved.

Optimal Design of a New Type of Savonius Rotor Using Simulation Analysis

2012 ◽  
Vol 499 ◽  
pp. 120-125 ◽  
Author(s):  
Zhi Peng Tang ◽  
Ying Xue Yao ◽  
Liang Zhou ◽  
Q. Yao
Keyword(s):  
Fluid Dynamics ◽  
Numerical Simulation ◽  
Computational Fluid Dynamics ◽  
Optimal Design ◽  
Simulation Analysis ◽  
Structural Parameters ◽  
Sliding Mesh ◽  
Savonius Rotor ◽  
Mesh Method ◽  
New Type

In order to enhance the efficiency of the Savonius rotor, this paper designs a new type of Savonius rotor with a rectifier. By using Computational Fluid Dynamics software to simulate and optimize the various parameters which affect the efficiency of the rotor. The sliding mesh method is applied here. The Cp-λ curves of wind turbine with different structural parameters are obtained after numerical simulation of flow field. On this basis, this paper gets the optimal structural parameters. And the results indicated that this new type of Savonius rotor has great improvement of efficiency compared with the traditional Savonius-type rotor.

scholarly journals Modal characteristics of harmonic gear transmission flexspline based on orthogonal design method

Open Physics ◽  
2021 ◽  
Vol 19 (1) ◽  
pp. 819-827
Author(s):  
Leyu Wei ◽  
Jie Yang ◽  
Changlu Wang ◽  
Xingxing Wang ◽  
Xinmeng Liu
Keyword(s):  
Finite Element ◽  
Optimal Design ◽  
Natural Frequencies ◽  
Design Method ◽  
Orthogonal Design ◽  
Structural Parameters ◽  
Gear Transmission ◽  
Modal Characteristics ◽  
Orthogonal Design Method ◽  
The Stability

Abstract The flexspline features several modal characteristics that are related to its structural parameters, which could impose an impact on the stability and reliability of the system of harmonic gear transmission. In this article, we have integrated the method of orthogonal design with the approach of finite element, so as to study the modal characteristics of flexspline under varying structural parameters. Furthermore, we have analyzed the ways of how varying structural parameters could impose an impact on the first eight-order natural frequencies of flexspline. In addition, by adopting the method of range and variance analysis for the obtained data, we have examined the influence imposed by varying structural parameters on the modal characteristics of flexspline, which could lay a foundation for the optimal design of the structural parameters of flexspline.

Parameter Analysis and Optimal Design for Mobile Claw-Pole Alternator

2011 ◽  
Vol 130-134 ◽  
pp. 658-661
Author(s):  
Xiao Hua Bao ◽  
Mou Zhi Liu
Keyword(s):  
Optimal Design ◽  
Output Voltage ◽  
Structural Parameters ◽  
Operating Performance ◽  
Parameter Analysis ◽  
Electric Load ◽  
Electric System ◽  
Standard Output

Along with the increasing electric load in the mobile, the request of the mobile electric system is increasing as well. Today, the standard output voltage of the claw alternator in the mobile is 12V or 24V. The performance and efficiency of the traditional claw alternator in the mobile cannot meet with the increasing request of them anymore. In addition to actively develop the new claw-pole alternator, try hard to improve the performance and efficiency of the traditional motor by optimizing the parameters is a solution to the problem of efficient and economic means. This paper will calculate the basic mathematical claw alternator model of the 14V machine. Based on it, have the machine’s structural parameters analyzed and optimized, making the operating performance as high as possible on the basic size of the motor in the original.

The Numerical Simulation and Optimal Design of Nozzle Jet for Gas-Fluid Two Phase Flow

2011 ◽  
Vol 291-294 ◽  
pp. 2403-2406
Author(s):  
Yan Min Li ◽  
Fei Ma
Keyword(s):  
Optimal Design ◽  
Two Phase Flow ◽  
Structural Parameters ◽  
Performance Testing ◽  
Fluid Phase ◽  
Phase Flow ◽  
Two Phase ◽  
Pressure Distributions ◽  
And Performance ◽  
The Relationship

Taking a nozzle jet for gas-fluid phase flow as a research object, the influences of the main structural parameters on the vacuum in the internal suction volume are analyzed. Utilizing the software FLUENT to simulate the gas-liquid two-phase flow in nozzle jet with different structural parameters, the pressure distributions are obtained and the relationship between the structural parameters and the vacuum in the suction volume is concerned. The results show that the vacuum in the suction volume of jet reaches the maximum when these structural parameters are some certain values. The research is helpful for the optimal design and performance testing of nozzle jets.

The Structural Analysis and Rapid Optimization for High-Speed Spindle Box

2011 ◽  
Vol 199-200 ◽  
pp. 1269-1272
Author(s):  
Huai Xing Wen ◽  
Lu Jun
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Structural Analysis ◽  
Optimal Design ◽  
Design Process ◽  
High Speed ◽  
Structural Parameters ◽  
The Finite Element Method ◽  
Target Setting ◽  
Fuzzy Constraints

Through the optimization of the design process, the application of the finite element method and the structural parameters design have avoided blindness of product design, reduced unnecessary waste, waste of material and time for example. The fuzzy constraints has been determined by the sensitivity calculation , and the use numerical method and procedures of chart to analyze and compare, the target setting in the specified range has been searched for the structure. Thus the optimal design got achieved.

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