Mechanical Model of Pelletization in the Impressing Roller System

2013 ◽  
Vol 732-733 ◽  
pp. 348-351
Author(s):  
Xiao Peng Huang ◽  
Fang Xin Wan ◽  
Jing Feng Wu
Keyword(s):  
Research Result ◽  
Reference Value ◽  
Force Balance ◽  
Total Force ◽  
Force Analysis ◽  
Forming Mechanism ◽  
Material Layer ◽  
Work Area ◽  
Function Relationship ◽  
Roller System

By the force analysis of alfalfa grass powder material layer in work area of circular mould pelletizing system, grass pellet briquetting mechanism when alfalfa grass powder pass work area was explained, function relationship between the thickness of material layer and the circular mould angle was established, force balance equation of material layer differentiation unit under the general conditions was deduced, and the total force of material layer applied by circular mould was obtained. Research result has practical meaning for guiding the process test of grass pellet product and optimizing product structure, and has a certain theoretical reference value for in-depth revealing granulating forming mechanism of hoop standard granulator.

Aerodynamic interference test of quad tilt rotor aircraft in wind tunnel

2019 ◽  
Vol 233 (15) ◽  
pp. 5553-5566 ◽  
Author(s):  
Kun Chen ◽  
Zhiwei Shi ◽  
Shengxiang Tong ◽  
Yizhang Dong ◽  
Jie Chen
Keyword(s):  
Wind Tunnel ◽  
Reference Value ◽  
Ground Effect ◽  
Open Loop ◽  
Force Balance ◽  
Scale Model ◽  
Operating Condition ◽  
Tilt Rotor ◽  
Interference Test ◽  
Aerodynamic Interference

There is an obvious aerodynamic interference problem that occurs for a quad tilt rotor in near-ground hovering or in the conversion operating condition. This paper presents an aerodynamic interference test of the quad tilt rotor in a wind tunnel. A 1:35 scale model of the quad tilt rotor is used in this test. To substitute for the ground, a moveable platform is designed in a low-speed open-loop wind tunnel to simulate different flight altitudes of the quad tilt rotor in hovering or forward flight. A rod six-component force balance is used to measure the loads on the aircraft, and the flow field below the airframe is captured using particle image velocimetry. The experimental results show that the ground effect is significant when the hover height above the ground is less than the rotor diameter of the quad tilt rotor aircraft, and the maximum upload of the airframe is approximately 12% of the total vertical thrust with the appearance of obvious fountain flow. During the conversion operating condition, the upload of the airframe is reduced compared with that in the hovering state, which is affected by rotor wake and incoming flow. The aerodynamic interference test results of the quad tilt rotor aircraft have important reference value in power system selection, control system design, and carrying capacity improvement with the advantage of ground effect.

scholarly journals ANALISIS FAKTOR MASALAH PERTUMBUHAN: STATUS GIZI, STUNTING PADA ANAK USIA < 5 TAHUN DI WILAYAH KERJA PUSKESMAS SIDOMULYO KOTA PEKANBARU

2020 ◽  
Vol 8 (1) ◽  
pp. 51-70
Author(s):  
Islah Wahyuni
Keyword(s):  
Early Detection ◽  
Maternal Education ◽  
Family Income ◽  
Health Workers ◽  
Research Result ◽  
Sampling Technique ◽  
Nutrition Status ◽  
Work Area ◽  
Good Nutrition ◽  
History Of

Background: The emergence of nutritional problems in toddlers is influenced by many interrelated factors. Directly influenced by some things, the toddler is not getting enough nutritious food balanced at the age of toddlers, the child does not get adequate nutritional care and children suffer from infectious diseases. Poverty is also one of the causes of malnutrition in regard to availability and consumption of family food. Less or worse nutritional problems and stunting are certainly required early detection attempts. Early detection of children's growth is an activity/examination to early find the existence of growth irregularities in infants The purpose of research: to do the growth factor: Nutrition Status, event Stunting in toddler  aged < 5 years in the work area Puskesmas Sidomulyo Pekanbaru. Research method: The sample used in this research is a toddler in Sidomulyo Puskesmas work area which amounted to 30 toddlers 12-59 months with Consencutive sampling technique. The study took place in December 2019.    Research instruments are digital weight scales, body length meters, Midline and questionnaires. Data analysis using the Rank Spearman. Research result: Classification of nutritional problems in infants based on the BB/U majority is BB less (underweight) 19 Reponden (63.3%). On a short (stunteed) majority, 14 respondents (46.7%), and based on the majority of the BB/TB of Good Nutrition (Normal) 17 respondents (56.7%). There are factors that affect the problem of nutritional status and stunting in children, from the knowledge aspect obtained by 16 respondents (53.3%)  Less knowledgeable, the majority of maternal education was 19 (63.3%), there were a history of 23-person disease infections (76.7%), and a low family income of 20 people (66.7%) and incomplete immunizations as much as 17 people (56.7%). There is a relationship factor of mother knowledge with the problem of nutrition (stunting) (0.00), there is a relationship factor mother education with the problem of nutrition (stunting) (0.00), there is a relationship factor family income with nutrition (stunting) (0.001), there is a relationship factor of infection history in infants with stunting problems (0.00), there is a relationship factor immunization history with the problem of the nutrient (stunting) (0.010). It is expected that the health workers further improve the counseling and education to the toddler mother in monitoring nutritional problems and growth of toddlers

Significance Analysis on the Affecting Factors of Basic Reserve Fund in Power Engineering Based on FAT

2014 ◽  
Vol 584-586 ◽  
pp. 2333-2338
Author(s):  
Xue Liang Hou ◽  
Yue Li ◽  
Ying Rong Yang
Keyword(s):  
Research Result ◽  
Fault Tree Analysis ◽  
Reference Value ◽  
Power Engineering ◽  
Utilization Efficiency ◽  
Engineering Practice ◽  
Affecting Factors ◽  
Analysis Model ◽  
Significance Analysis ◽  
Reserve Fund

Basic reserve fund is a part of the power engineering total cost. Reducing its quantity can obviously increase the utilization efficiency of engineering cost. But how can reduce the quantity of basic reserve fund, we can start from its affecting factors. To this, for the affecting factors of basic reserve fund, this paper constructed the significance analysis model about affecting factors based on its actual application situation and Fault Tree Analysis (FAT). Finally, we got the degree and prior about affecting factors of basic reserve fund. Thereby the empirical research result provided a theory reference value which can control the quantity of basic reserve fund in the engineering practice.

Network Theoretic Approach to Atomistic Material Modeling Using Spectral Sparsification

2017 ◽  
Author(s):  
Peter C. Woerner ◽  
Aditya G. Nair ◽  
Kunihiko Taira ◽  
William S. Oates
Keyword(s):  
Coulomb Potential ◽  
Network Theory ◽  
Force Balance ◽  
Total Force ◽  
Theoretic Approach ◽  
Lennard Jones Potential ◽  
Jones Potential ◽  
Lennard Jones ◽  
Internal Forces ◽  
Molecular Forces

Network theory is used to formulate an atomistic material network. Spectral sparsification is applied to the network as a method for approximating the interatomic forces. Local molecular forces and the total force balance is quantified when the internal forces are approximated. In particular, we compare spectral sparsification to conventional thresholding (radial cut-off distance) of molecular forces for a Lennard-Jones potential and a Coulomb potential. The spectral sparsification for the Lennard-Jones potential yields comparable results while spectral sparsification of the Coulomb potential outperforms the thresholding approach. The results show promising opportunities which may accelerate molecular simulations containing long-range electrical interactions which are relevant to many multifunctional materials.

The Study of FEM for Internal Force Analysis of the Sluice Structure

2011 ◽  
Vol 71-78 ◽  
pp. 3275-3279
Author(s):  
Xiao Na Li ◽  
Tong Chun Li ◽  
Yuan Ding
Keyword(s):  
Cross Section ◽  
Bending Moment ◽  
Internal Force ◽  
Force Balance ◽  
Shearing Force ◽  
Force Analysis ◽  
Reconstruction Project ◽  
Unit Stress ◽  
Reinforcement Design

This paper takes a sluice reconstruction project as an example. The constraint internal force, the related axis force, bending moment, and shearing force at the corresponding section are solved according to the unit stress and internal force balance. Furthermore, technology of mesh auto-generation in cross-section is utilized to plot the internal force graph of the structure directly, which will provide reference for reinforcement design and make it more convenient.

Sensitivity Analysis and Parameter Optimization of a Hydrodynamic Model for the Aeration Chamber in a Water-Lifting Aerator

2013 ◽  
Vol 663 ◽  
pp. 888-893
Author(s):  
Xin Sun ◽  
Fei Fei Duan ◽  
Ting Lin Huang
Keyword(s):  
Sensitivity Analysis ◽  
Hydrodynamic Model ◽  
Flow Resistance ◽  
Water Velocity ◽  
Force Balance ◽  
Model Parameters ◽  
Total Force ◽  
Two Phase ◽  
Optimized Model ◽  
Resistance Coefficients

A one-dimensional hydrodynamic model for the aeration chamber in the water-lifting aerator was developed on the basis of the total force balance between the driving force and flow resistance acting on the gas-liquid two-phase flow. Water velocity in the aeration chamber was predicted under different combinations of flow resistance coefficients at the top (KT) and the entrance and exit (KE), the results of sensitivity analysis showed that both KT and KE have significant effect on the predicted water velocity and gas holdup in the riser of the aeration chamber. Taking the water velocity as the main objective, flow resistance coefficients of KT and KE were optimized as and , where Ulr is the superficial water velocity. Using optimized model parameters, the water velocities were well predicted within ±7% of the measured ones respectively.

Analysis on Stress-Strain Distribution in Rapid Prototyping

2010 ◽  
Vol 26-28 ◽  
pp. 352-355
Author(s):  
Mao Liang Wu
Keyword(s):  
Strain Distribution ◽  
Influence Factors ◽  
Force Balance ◽  
Force Model ◽  
Theoretic Analysis ◽  
Stress Strain ◽  
Adhesive Layers ◽  
Quantitative Expression ◽  
Special Cases ◽  
Function Relationship

The paper introduces the shrinkage center conception and simplified model of the material solidification. Starting with a micro unit, the paper builds the force model, and derives the formula of the stress-strain principles on the basis of the force balance function, relationship between the strain and displacement and the unit boundary conditions. The theoretic analysis reveals the influence factors and the quantitative expression affecting parts deformation. At last, two special cases, separating layers and complete adhesive layers, are discussed to display the stress-strain distribution under such conditions.

Security Authentication for Smart Substation Communication Based on IEC 62351

2012 ◽  
Vol 260-261 ◽  
pp. 91-96 ◽  
Author(s):  
Lu Chen ◽  
Yu Fei Wang ◽  
Tao Zhang
Keyword(s):  
Data Security ◽  
Research Result ◽  
Reference Value ◽  
Smart Devices ◽  
Computing Power ◽  
Security Issues ◽  
Security Authentication ◽  
Iec 62351 ◽  
Development Direction ◽  
Smart Substation

An important feature of smart substation system is the communication of the various smart devices IED (Intelligent Electronic Digital), the network security issues become increasingly prominent with networked and standardized of the communication protocols, especially when IEC 61850 becoming development direction. In this paper, considered data and security communications standard of the power system IEC 62351’s safety authentication requirements, as well as limited storage and computing power of IED, a protocol used between IED safety authentication-Secure Remote Password SRP protocol is proposed . The research result help improve data security transmission and authentication of smart substation. It is provide with reference value to the implementation of IEC 62351 in smart substation.

Capillary Filling Dynamics of Electromagnetohydrodynamic Flow of Non-Newtonian Fluids

2020 ◽  
Vol 142 (4) ◽  
Author(s):  
Jeffy John Philip ◽  
Joydeb Mukherjee ◽  
Sandip Sarkar ◽  
Sandip K. Saha
Keyword(s):  
Power Law ◽  
Transverse Magnetic ◽  
Newtonian Fluids ◽  
Force Balance ◽  
Rheological Parameters ◽  
Scaling Analysis ◽  
Total Force ◽  
Capillary Filling ◽  
Stress Parameter ◽  
Comparison Results

Abstract In this work, we aim to develop a mathematical model for capillary filling dynamics of electromagnetohydrodynamic flow of non-Newtonian fluids. An axially applied electric field and a transverse magnetic field are considered to elucidate the electromagnetohydrodynamic transport through the microcapillary. Assuming a non-Newtonian power-law obeying fluids, we analyze the transient evolution of the electromagnetohydrodynamic capillary positions by considering the magnitude of the total force balance via finite volume-based numerical formalism. We have highlighted the various rheological regimes in the horizontal capillary through a scaling analysis. For the Newtonian fluids, corresponding inviscid linear Washburn regime is also analyzed and compared with the power-law obeying fluids. Furthermore, we have also derived closed-form analytical expressions for the electromagnetohydrodynamic velocity, pressure gradient, and transient evolution of the capillary positions by using couple stress parameter model to characterize the fluid rheological behaviors. We perform a comparison test of the coupled stress parameter model with the results from the literature for a similar set of fluid rheological parameters. The comparison results are found to be in good agreement.

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