Parameter Optimization and Analysis of Pellet Mill

2012 ◽  
Vol 271-272 ◽  
pp. 1377-1382
Author(s):  
Qing Hai Jiang ◽  
Yu Sun ◽  
Kai Wu ◽  
Xian Fei Xia
Keyword(s):  
Parameter Optimization ◽  
Relative Motion ◽  
Structural Design ◽  
Theoretical Basis ◽  
Extrusion Process ◽  
Pellet Quality ◽  
Effective Work ◽  
Motion State ◽  
Work Area ◽  
Calculation Results

According to the analyses on the forming principle of the pellet mill and the relative motion state between the roller and the die during the extrusion process, the mathematical models of the extruding height of material and the extruding velocity of the material were developed. Based on the models, the influences of the radius ratio λ of the roller and the die and the maximum seizing angle θ on the maximum extruding height of material hmax and the pellet quality were analyzed and calculated. The calculation results show that the increases of θ and λ in a certain range are beneficial to the production yield, increasing the effective work area, and improving the pellet quality. The results provide a theoretical basis for optimizing structural design of the pellet mill.

scholarly journals Thermal Performance Analysis of Heat Collection Wall in High-Rise Building Based on the Measurement of Near-Wall Microclimate

Energies ◽  
2021 ◽  
Vol 14 (7) ◽  
pp. 2023
Author(s):  
Ruixin Li ◽  
Yiwan Zhao ◽  
Gaochong Lv ◽  
Weilin Li ◽  
Jiayin Zhu ◽  
...  
Keyword(s):  
Wind Speed ◽  
Structural Design ◽  
Theoretical Basis ◽  
Thermal Process ◽  
Measured Data ◽  
Passive Heating ◽  
High Rise ◽  
And Performance ◽  
Wall Components ◽  
Near Wall

Near-wall microenvironment of a building refers to parameters such as wind speed, temperature, relative humidity, solar radiation near the building’s façade, etc. The distribution of these parameters on the building façade shows a certain variation based on changes in height. As a technology of passive heating and ventilation, the effectiveness of this application on heat collection wall is significantly affected by the near-wall microclimate, which is manifested by the differences, and rules of the thermal process of the components present at different elevations. To explore the feasibility and specificity of this application of heat collection wall in high-rise buildings, this study uses three typical high-rise buildings from Zhengzhou, China, as research buildings. Periodic measurements of the near-wall microclimate during winter and summer were carried out, and the changing rules of vertical and horizontal microclimate were discussed in detail. Later, by combining these measured data with numerical method, thermal process and performance of heat collection wall based on increasing altitude were quantitatively analyzed through numerical calculations, and the optimum scheme for heat collection wall components was summarized to provide a theoretical basis for the structural design of heat-collecting wall in high-rise buildings.

Kinematics and Dynamics Simulation Research for Roller Coaster Multi-Body System

2011 ◽  
Vol 421 ◽  
pp. 276-280 ◽  
Author(s):  
Ge Ning Xu ◽  
Hu Jun Xin ◽  
Feng Yi Lu ◽  
Ming Liang Yang
Keyword(s):  
Structural Design ◽  
3D Model ◽  
Structure Design ◽  
Dynamics Simulation ◽  
Body System ◽  
Load Spectrum ◽  
Roller Coaster ◽  
Simulation Research ◽  
Calculation Results ◽  
Multi Body

To assess the roller coaster multi-body system security, it is need to extract the running process of kinematics, dynamics, load spectrum and other features, as basis dates of the roller coaster structural design. Based on Solidworks/motion software and in the 3D model, the calculation formula of the carrying car velocity and acceleration is derived, and the five risk points of the roller coaster track section are found by simulation in the running, and the simulation results of roller coaster axle mass center velocity are compared with theoretical calculation results, which error is less than 4.1%, indicating that the calculation and simulation have a good fit and providing the evidence for the roller coaster structure design analysis.

Design of Midcourse Trajectory for Tactical Ballistic Missile Intercept on the Basis of Zero Effort Miss

2013 ◽  
Vol 397-400 ◽  
pp. 536-545
Author(s):  
Luo Gang Li ◽  
Wu Xing Jing ◽  
Chang Sheng Gao
Keyword(s):  
Relative Motion ◽  
Design Method ◽  
Ballistic Missile ◽  
Prediction Methods ◽  
Trajectory Design ◽  
Motion State ◽  
Simulating Calculation ◽  
Analytical Expressions ◽  
Maximal Principle ◽  
Computing Method

Since the maneuverability of the tactical ballistic missile, the midcourse trajectory of interception missile needs design online. Firstly, this paper reasonably simplifies the models and explores the analytical expressions of their relative motion state to obtain a kind of rapid and high-precision computing method of zero effort miss. Secondly, it applies constant thrust for the interception missile, burns out shut-down solid engine, reflects on the index requirement of overloaded interception missile, and designs midcourse trajectory of the interception missile with Pontryagin maximal principle, in accordance with the analytical expressions of zero effort miss. Finally, with the simulating calculation, the prediction methods of zero effort miss and trajectory design method provided by this paper are applied to a situation simulation which is close to the fact as much as possible so as to verify the applicability in the interception of tactical ballistic missile.

Parameter optimization and structural design of polymer arrayed waveguide grating multiplexer

2002 ◽  
Vol 201 (1-3) ◽  
pp. 45-53 ◽  
Author(s):  
Wen-Bin Guo ◽  
Chun-Sheng Ma ◽  
Da-Ming Zhang ◽  
Kai-Xin Chen ◽  
Yu Zhao ◽  
...  
Keyword(s):  
Parameter Optimization ◽  
Structural Design ◽  
Arrayed Waveguide Grating ◽  
Waveguide Grating ◽  
Arrayed Waveguide

scholarly journals Study on the Mathematical Model of Vacuum Breaker Valve for Large Air Mass Conditions

Water ◽  
2019 ◽  
Vol 11 (7) ◽  
pp. 1358
Author(s):  
Zhang ◽  
Fan ◽  
Yu ◽  
Zhang ◽  
Lv ◽  
...  
Keyword(s):  
Mathematical Model ◽  
Theoretical Basis ◽  
Isothermal Process ◽  
Air Mass ◽  
Protection Scheme ◽  
Calculation Results ◽  
Air Valve ◽  
The Mathematical Model ◽  
Valve Model ◽  
Derivation Process

The mathematical model of vacuum breaker valve is significant to the protection scheme. The more accurate the vacuum breaker valve model, the more reliable the calculation results. In this study, the application conditions of the air valve model are analyzed according to the assumptions used in the derivation, and the contradictions between these assumptions are proposed. Then, according to the different working characteristics between the vacuum breaker valve on the siphon outlet pipe and the air valve, the vacuum breaker valve model is deduced based on the modified assumptions. In the derivation process, the thermodynamic change of the gas in the vacuum breaker valve is assumed to follow the isentropic process rather than an isothermal process, and the water level in the vacuum breaker valve is considered to be changeable. An engineering case is introduced, and the results calculated according to the vacuum breaker valve model are compared with those resulting from the air valve model. The results indicate that the vacuum breaker valve model is suitable for large air mass conditions and can provide a theoretical basis for the numerical simulation and settings of vacuum breaker valves.

Dynamic Modeling and Analysis of Seven-Bar Seedling Planting Mechanism of Transplanting Machine

2014 ◽  
Vol 574 ◽  
pp. 230-238
Author(s):  
Jian Neng Chen ◽  
Jia Wei Wu ◽  
Jun Ye ◽  
Xiang Fu ◽  
Xiao Fu Fang
Keyword(s):  
Parameter Optimization ◽  
Kinematic Model ◽  
Dynamic Test ◽  
Dynamic Parameter ◽  
Theory Model ◽  
Modeling And Analysis ◽  
Machine Vibration ◽  
Kinematic Theory ◽  
Model And Simulation ◽  
Calculation Results

Seven-bar seedling planting mechanism is one kind of developed transplanting mechanism of vegetable seedling transplanting machines. Dynamic equations of the link rods were established and analysis program was compiled so as to analyze the dynamic characteristics of the mechanism; Meanwhile, simulation model of the mechanism was established and corresponding virtual dynamic test was conducted based on Adams. The consistency between calculation results based on kinematic theory model and simulation results achieved from Adams was proved through comparison, which verified the dynamics model was correct and reliable. It can be concluded that the dynamic model was the basis of dynamic parameter optimization model of seven-bar seedling planting mechanism, which facilitates the parameter optimization process of the kind of seedling planting mechanism with various specifications, and it also avoided the tedious process of repeated modeling based on Adams dynamics optimization. With the analysis results of the seven-bar seedlings planting mechanism based on the established kinematic model, it was found out that the force fluctuation at the chassis caused by the reciprocating motion of the mechanism was large, which could cause machine vibration and increase the labor intensity of operators.

Design and Simulation of Scalable Plastering Machine Based on Virtual Prototyping Technology

2013 ◽  
Vol 721 ◽  
pp. 691-694 ◽  
Author(s):  
Zhen Li ◽  
Xiao Jing Shang
Keyword(s):  
Structural Design ◽  
Theoretical Basis ◽  
Virtual Prototyping ◽  
Three Dimensional ◽  
Solid Model ◽  
Optimized Design ◽  
The Future ◽  
Virtual Prototyping Technology

Design a scalable plastering machine for the traditional plastering machine problems in the structural design. On the basis of the three-dimensional solid model established using PRO / E, we make the simulation for the institutions overall course of the campaign through using ADAMS, to detected design products by experience whether meet the actual requirements or not, but also provide a theoretical basis for the optimized design of wall plastering machine in the future.

Study on the Surporting Mechanism of Precision Turning Process of Big-Diameter Length Rate Shaft by the Central Frame

2012 ◽  
Vol 538-541 ◽  
pp. 2139-2142
Author(s):  
Guo Zhi Zhang
Keyword(s):  
Probability Theory ◽  
Finite Element ◽  
Elastic Modulus ◽  
Theoretical Basis ◽  
Control Mechanism ◽  
Element Model ◽  
Turning Process ◽  
Precision Turning ◽  
Calculation Results ◽  
Theoretical Mechanics

Deformation of the big-diameter length rate shaft and turning process control mechanism were studied. When it was supported by the central frame, its theoretical mechanics models were established. Based on probability theory, considering the randomness of cutting force, elastic modulus, its length and its diameter, its theoretical model was established to calculate its standard deviation of the roundness. Moreover, its dynamic response finite element model was established, and the model was verified through comparison with the theoretical calculation results. The study provides the method and theoretical basis for the precision turning process planning of the big-diameter length rate shaft.

Design Method of Self-Loading Device of the Side-Crane Used for Container

2012 ◽  
Vol 466-467 ◽  
pp. 951-955
Author(s):  
Jun Qing Zhan ◽  
Xiao Mei Feng ◽  
Li Shun Li ◽  
Xiang De Meng
Keyword(s):  
Mathematical Model ◽  
Structural Design ◽  
Design Method ◽  
The Self ◽  
Design Calculation ◽  
Force Analysis ◽  
Loading Device ◽  
Calculation Results ◽  
The Mathematical Model ◽  
Flat Ground

The self-loading device used for side-crane is put forward. Its structure is presented. Based on the force analysis when the side-crane works at flat ground, the mathematical model is established when the crane working at uneven ground. And the design calculation is performed. The self-loading device’s optimal design is accomplished. Based on the above calculation results, the self-loading prototype is manufactured. And the design method can be adopted to the similar equipment’s structural design.

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