Research on Loss and Temperature Rise of a Novel Dynamic Electromagnetic Induction Heater

A novel, environmental friendly dynamic rotating electromagnetic heating-magnetizing device is proposed, which can heat up and magnetize the low temperature feed water of reverse osmosis system. The device converts input mechanical energy into heat energy completely. The structure and operation mechanism are discussed in detail, and the mathematical model of loss is established based on fundamental electromagnetic field theory. At last, the effects of water magnetization treated by the device are introduced, which inhibits scaling on the reverse osmosis membrane surface and slows down the corrosion of metal surface.

Design and Modeling of a Bio-Inspired Flexible Joint Actuator

Actuators ◽

10.3390/act10050095 ◽

2021 ◽

Vol 10 (5) ◽

pp. 95

Author(s):

Ming Xu ◽

Cheng Rong ◽

Long He

Keyword(s):

Hydraulic System ◽

Driving Forces ◽

Theoretical Models ◽

Element Analysis ◽

Flexible Joint ◽

Fea Model ◽

Series Of Experiments ◽

The Mathematical Model ◽

Moving Speed

Spiders rely on a hydraulic system to stretch their legs but use muscles to make their legs flex. The compound drive of hydraulics and muscle makes an integrate dexterous structure with powerful locomotion abilities, which perfectly meets the primary requirements of advanced robots. Inspired by this hydraulics-muscle co-drive joint, a novel flexible joint actuator was proposed and its driving characteristics were preliminarily explored. The bio-inspired flexible joint manifested as a double-constrained balloon actuator, which was fabricated by the composite process of 3D printing and casting. To evaluate its performance, the mathematical model was deduced, as well as the finite element analysis (FEA) model. A series of experiments on the rotation angles, driving forces, and efficiencies of the flexible joint were carried out and compared with the mathematical calculations and FEA simulations. The results show that the accuracy of the two theoretical models can be used to assess the joint actuator. The locomotion test of a soft arthropod robot with two flexible joints was also implemented, where the moving speed reached 22 mm/s and the feasibility of the proposed flexible joint applied to a soft robot was demonstrated.

The Analyse on Stiffness Model of 3-PPSR Flexible Parallel Robot

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.716-717.1643 ◽

2014 ◽

Vol 716-717 ◽

pp. 1643-1647

Author(s):

Yu Liang Luan ◽

Wei Bin Rong ◽

Li Ning Sun

Keyword(s):

Finite Element ◽

Aspect Ratio ◽

High Aspect Ratio ◽

Parallel Robot ◽

Force Balance ◽

Element Analysis ◽

Flexible Hinge ◽

Stiffness Model ◽

In order to achieve greater workspace motion, it’s designed a high aspect ratio 3-PPSR flexible parallel robot, driven by a piezoelectric motor, connected by flexible hinges, which has the advantages of simple structure, non singular, seamless, high motion precision. Because of the stiffness of the system directly affecting the motion accuracy, load bearing performance, according to the characteristics of high aspect ratio flexible hinge, It’s established the mathematical model of flexible hinge through finite element method. Using method of integral stiffness, conbined coordination equation with force balance equation, the flexible stiffness model of system is obtained. Finally, through using Ansys, it’s confirmed the validity of the theoretical model by comparing of the theoretical stiffness model results with the finite element analysis of the model results, to provide a reliable guarantee for optimization and analysis of kinematics and dynamics of flexible parallel robot.

Modeling of thermal contact problem of disc brake system with frictional heat generation

World Journal of Engineering ◽

10.1260/1708-5284.11.4.373 ◽

2014 ◽

Vol 11 (4) ◽

pp. 373-390 ◽

Cited By ~ 2

Author(s):

A. Belhocine ◽

M. Bouchetara ◽

Ar. Bakar ◽

M. Nouby

Keyword(s):

Temperature Distribution ◽

Thermal Contact ◽

Frictional Heat ◽

Brake Disc ◽

Heat Flux Distribution ◽

Element Analysis ◽

Critical System ◽

Suspension Systems ◽

Air Bag

Safety aspect in automotive engineering has been considered as a number one priority in development of new vehicle. Each single system has been studied and developed in order to meet safety requirement. Instead of having air bag, good suspension systems, good handling and safe cornering, there is one most critical system in the vehicle which is brake systems. The objective of this work is to investigate and analyze the temperature distribution of rotor disc during braking operation using ANSYS Multiphysics. The work uses the finite element analysis techniques to predict the temperature distribution on the full and ventilated brake disc and to identify the critical temperature of the rotor. The analysis also gives us, the heat flux distribution for the two discs.

The Finite Element Analysis and Structure Optimizing of the 42MN Flatting Mill’s Higher Beam

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.145.317 ◽

2010 ◽

Vol 145 ◽

pp. 317-320

Author(s):

Chun Ming Zhang ◽

Run Yuan Hao

Keyword(s):

Mathematical Model ◽

Finite Element Analysis ◽

Finite Element ◽

Structural Design ◽

Structural Parameters ◽

Element Model ◽

Optimum Structure ◽

Element Analysis ◽

This text is on the basis of the investigation of the 42MN flatting mill’s higher beam, establishing the flatting mill’s higher beam’s finite element model and the mathematical model which has optimum structure. According to the results of their structure finite element analysis, weaved the relevant procedures and optimized them, obtained ideal structural parameters, this text provide better ideas and ways for the structural design of the flatting mill’s higher beam.

Analysis on Spindle of 2MW Wind Generator

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.121-126.2532 ◽

2011 ◽

Vol 121-126 ◽

pp. 2532-2536

Author(s):

Jia Hong Zheng ◽

Min Li

Keyword(s):

Finite Element Analysis ◽

Finite Element ◽

Element Model ◽

Optimal Model ◽

Optimization Analysis ◽

Element Analysis ◽

The Mathematical Model ◽

The Finite Element Model ◽

Complete Optimization

The model of the spindle was made while the related characteristics and parameters were analysising,and then it was inducted in ANSYS finite element analysis software. Through carrying the constraint on the finite element model, the spindle was completed to realize the finite element analysis. At last, the model was inducted in MATLAB to establish the optimal model, through the mathematical model ,it was realised to complete optimization analysis.

Thermal Modeling of Disc Brake Rotor in Frictional Contact

Journal of Multiscale Modelling ◽

10.1142/s1756973713500133 ◽

2013 ◽

Vol 05 (03) ◽

pp. 1350013 ◽

Cited By ~ 2

Author(s):

Belhocine Ali ◽

Nouby Mahdi Ghazaly

Keyword(s):

Temperature Distribution ◽

Flux Distribution ◽

Brake Disc ◽

Heat Flux Distribution ◽

Element Analysis ◽

Critical System ◽

Analysis Techniques ◽

Suspension Systems ◽

Air Bag

Safety aspect in automotive engineering has been considered as a number one priority in development of new vehicle. Each single system has been studied and developed in order to meet safety requirement. Instead of having air bag, good suspension systems, good handling and safe cornering, there is one most critical system in the vehicle which is brake systems. The objective of this work is to investigate and analyze the temperature distribution of rotor disc during braking operation using ANSYS Multiphysics. The work uses the finite element analysis techniques to predict the temperature distribution on the full and ventilated brake disc and to identify the critical temperature of the rotor. The analysis also gives us, the heat flux distribution for the two discs.

Modeling of thermal contact problem of disc brake system with frictional heat generation

World Journal of Engineering ◽

10.1260/1708-5284.11.5.457 ◽

2014 ◽

Vol 11 (5) ◽

pp. 457-472 ◽

Cited By ~ 1

Author(s):

A. Belhocine ◽

M. Bouchetara ◽

A. Bakar ◽

M. Nouby

Keyword(s):

Temperature Distribution ◽

Thermal Contact ◽

Frictional Heat ◽

Brake Disc ◽

Heat Flux Distribution ◽

Element Analysis ◽

Critical System ◽

Suspension Systems ◽

Air Bag

Safety aspect in automotive engineering has been considered as a number one priority in development of new vehicle. Each single system has been studied and developed in order to meet safety requirement. Instead of having air bag, good suspension systems, good handling and safe cornering, there is one most critical system in the vehicle which is brake systems. The objective of this work is to investigate and analyze the temperature distribution of rotor disc during braking operation using ANSYS Multiphysics. The work uses the finite element analysis techniques to predict the temperature distribution on the full and ventilated brake disc and to identify the critical temperature of the rotor. The analysis also gives us, the heat flux distribution for the two discs.

The Residual Thickness Calculation of Fan Blades Based on the Resistance Network Mathematic Model

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.783.88 ◽

2018 ◽

Vol 783 ◽

pp. 88-92

Author(s):

Dian Bin Chen ◽

Jun Ying Ma ◽

Xi Liang Wang ◽

Dong Fei Han ◽

Hong Wei Li

Keyword(s):

Pitting Corrosion ◽

High Speed ◽

Mathematic Model ◽

Dust Particles ◽

Element Analysis ◽

Precision Error ◽

Before And After ◽

Residual Thickness ◽

According to the situation of the core parts fan blades are susceptible to sand dust particles, and high speed collision can generate wear corrosion, the current field change before and after, the corrosion is the main cause of pitting corrosion precision error. Through the FSM method analysis of the monitoring area, the residual thickness of pitting corrosion was calculated by the mathematical model of resistor network. The finite element analysis and experimental results are consistent.

A two degrees of freedom comb capacitive-type accelerometer with low cross-axis sensitivity

JOURNAL OF MECHANICAL ENGINEERING AND SCIENCES ◽

10.15282/jmes.13.3.2019.09.0435 ◽

2019 ◽

Vol 13 (3) ◽

pp. 5334-5346

Author(s):

M. N. Nguyen ◽

L. Q. Nguyen ◽

H. M. Chu ◽

H. N. Vu

Keyword(s):

Degrees Of Freedom ◽

Proof Mass ◽

Vibration Modes ◽

Electrode Structure ◽

Element Analysis ◽

Mechanical Coupling ◽

Fully Differential ◽

Mode Effects ◽

Cross Axis

In this paper, we report on a SOI-based comb capacitive-type accelerometer that senses acceleration in two lateral directions. The structure of the accelerometer was designed using a proof mass connected by four folded-beam springs, which are compliant to inertial displacement causing by attached acceleration in the two lateral directions. At the same time, the folded-beam springs enabled to suppress cross-talk causing by mechanical coupling from parasitic vibration modes. The differential capacitor sense structure was employed to eliminate common mode effects. The design of gap between comb fingers was also analyzed to find an optimally sensing comb electrode structure. The design of the accelerometer was carried out using the finite element analysis. The fabrication of the device was based on SOI-micromachining. The characteristics of the accelerometer have been investigated by a fully differential capacitive bridge interface using a sub-fF switched-capacitor integrator circuit. The sensitivities of the accelerometer in the two lateral directions were determined to be 6 and 5.5 fF/g, respectively. The cross-axis sensitivities of the accelerometer were less than 5%, which shows that the accelerometer can be used for measuring precisely acceleration in the two lateral directions. The accelerometer operates linearly in the range of investigated acceleration from 0 to 4g. The proposed accelerometer is expected for low-g applications.