The Static Analysis of the Parallel Bars of the Crankshaft of a Mini Air Compressor on ANSYS

2013 ◽  
Vol 397-400 ◽  
pp. 344-354
Author(s):  
Yao Bing Wei ◽  
Zhen Zhen Qu
Keyword(s):  
Static Analysis ◽  
Mechanical Model ◽  
Working Condition ◽  
Stress And Strain ◽  
Reciprocating Compressor ◽  
Static Characteristics ◽  
Connecting Rod ◽  
Air Compressor

Mechanical model of crankshaft and connecting rod mechanism of reciprocating compressor was built. Then the order of stress was obtained every ten degrees while crankshaft turning. The larger stress of crankshaft initial turnings was utilized to calculate the whole model and the unreliable region and destructive working condition then was determined. The situation was simulated with ANALYS and the static characteristics, i.e. stress and strain, of the crankshaft was also obtained. The simulated results testify the analysis and the results of the paper have great value for reference when designing crankshafts.

Dynamic Motion and Modal Analysis Simulation for the Balance Mass of the Crankshaft of a Two-Cylinder Reciprocating Air Compressor

2014 ◽  
Vol 511-512 ◽  
pp. 696-699
Author(s):  
Yi Cheng Huang ◽  
Dain Yu Lin
Keyword(s):  
Finite Element ◽  
Modal Analysis ◽  
Inertial Force ◽  
Reciprocating Compressor ◽  
Connecting Rod ◽  
Air Compressor ◽  
Dynamic Motion ◽  
Finite Element Software ◽  
Simulation Results

The purpose of this study is to suppress the problem of vibration which occurs in a running two-cylinder reciprocating compressor. Determining an optimal crankshaft counterweight and narrowing the trajectory orbit of the crankshaft connecting rod mechanism is achieved. Use of finite element software (ANSYS) was used to simulate the modality of the two cylinders. In additions, the inertial force influenced to the crankshaft under different counterweight design was simulated. Simulation results by using SolidWorks software show the new counterweight was able to reduce the crankshafts eccentric by 4mm and the orbit trajectory by 10mm. This study provides the procedures pertaining to the bettering performance and assessment for an existing reciprocating compressor.

scholarly journals Improved Modeling of a Multi-Level Inverter for TACS to Reduce Computational Time and Improve Accuracy

Energies ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 849
Author(s):  
Sung-An Kim
Keyword(s):  
Mechanical Model ◽  
Simulation Software ◽  
Computational Time ◽  
Electrical Model ◽  
Conventional Model ◽  
Switching Operation ◽  
Air Compressor ◽  
Power Semiconductors ◽  
Proposed Model ◽  
Multi Level

A modeling of a turbo air compressor system (TACS), with a multi-level inverter for driving variable speed, combining an electrical model of an electric motor drive system (EMDS) and a mechanical model of a turbo air compressor, is essential to accurately analyze dynamics characteristics. Compared to the mechanical model, the electrical model has a short sampling time due to the high frequency switching operation of the numerous power semiconductors inside the multi-level inverter. This causes the problem of increased computational time for dynamic characteristics analysis of TACS. To solve this problem, the conventional model of the multi-level inverter has been proposed to simplify the switching operation of the power semiconductors, however it has low accuracy because it does not consider pulse width modulation (PWM) operation. Therefore, this paper proposes an improved modeling of the multi-level inverter for TACS to reduce computational time and improve the accuracy of electrical and mechanical responses. In order to verify the reduced computational time of the proposed model, the conventional model using the simplified model is compared and analyzed using an electronic circuit simulation software PSIM. Then, the improved accuracy of the proposed model is verified by comparison with the experimental results.

Finite Element Analysis of Drilling Frame on Down-the-Hole Drill Based on Mechanical Mechanics and Mechanical Properties

2014 ◽  
Vol 908 ◽  
pp. 282-286
Author(s):  
Wan Rong Wu ◽  
Lin Chen
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Working Condition ◽  
Slenderness Ratio ◽  
Stress And Strain ◽  
Limit States ◽  
Element Analysis ◽  
Practical Engineering ◽  
Structure Strength ◽  
Strength And Stiffness

Drilling frame on TD165CH Down-The-Hole Drill that has large slenderness ratio and be longer than 10m is one component of Down-The-Hole drill which is mainly subjected to load.In the process of drilling, drilling frame is not only subjected to loads which are like tensile, compression and torsion and so on, and be under the influence of impacting and vibration of impactor,the situation of force is complicated.By analysing of working condition of Down-The-Hole drill,there get all kinds of limit states of typical working conditions, and then using Ansys doing finite element analysis, there get distribution of the stress and strain of drilling frame and the result of modal analysis to check whether drilling frame meets the requirements of strength and stiffness or not,and whether it is possible to resonate with the impactor or not.By analysis,Structure strength and stiffness of drilling Frame on TD165CH Down-The-Hole drill meet the requirements of practical engineering, and drilling Frame does not resonate with the impactor.

Reciprocating compressor valve damage estimation under varying speeds through the acoustic emission technique

2019 ◽  
Vol 10 (5) ◽  
pp. 621-633
Author(s):  
Hoi-Yin Sim ◽  
Rahizar Ramli ◽  
Ahmad Saifizul
Keyword(s):  
Acoustic Emission ◽  
Regression Analysis ◽  
Flow Rate ◽  
Reciprocating Compressor ◽  
Damage Estimation ◽  
Content Type ◽  
Air Compressor ◽  
Ae Signal ◽  
Valve Opening ◽  
Ae Signals

Purpose The purpose of this paper is to examine the effect of reciprocating compressor speeds and valve conditions on the roor-mean-square (RMS) value of burst acoustic emission (AE) signals associated with the physical motion of valves. The study attempts to explore the potential of AE signal in the estimation of valve damage under varying compressor speeds. Design/methodology/approach This study involves the acquisition of AE signal, valve flow rate, pressure and temperature at the suction valve of an air compressor with speed varrying from 450 to 800 rpm. The AE signals correspond to one compressor cycle obtained from two simulated valve damage conditions, namely, the single leak and double leak conditions are compared to those of the normal valve plate. To examine the effects of valve conditions and speeds on AE RMS values, two-way analysis of variance (ANOVA) is conducted. Finally, regression analysis is performed to investigate the relationship of AE RMS with the speed and valve flow rate for different valve conditions. Findings The results showed that AE RMS values computed from suction valve opening (SVO), suction valve closing (SVC) and discharge valve opening (DVO) events are significantly affected by both valve conditions and speeds. The AE RMS value computed from SVO event showed high linear correlation with speed compared to SVC and DVO events for all valve damage conditions. As this study is conducted at a compressor running at freeload, increasing speed of compressor also results in the increment of flow rate. Thus, the valve flow rate can also be empirically derived from the AE RMS value through the regression method, enabling a better estimation of valve damages. Research limitations/implications The experimental test rig of this study is confined to a small pressure ratio range of 1.38–2.03 (free-loading condition). Besides, the air compressor is assumed to be operated at a constant speed. Originality/value This study employed the statistical methods namely the ANOVA and regression analysis for valve damage estimation at varying compressor speeds. It can enable a plant personnel to make a better prediction on the loss of compressor efficiency and help them to justify the time for valve replacement in future.

Finite Element and Modal Analysis for Connecting Rod Used in Piston Type Air Compressor

2014 ◽  
Vol 945-949 ◽  
pp. 3-6
Author(s):  
Xiao Xu Liu ◽  
Min Chen
Keyword(s):  
Finite Element ◽  
Stress Analysis ◽  
Modal Analysis ◽  
Dynamic Characteristic ◽  
3D Model ◽  
Static Strength ◽  
Connecting Rod ◽  
Air Compressor ◽  
Finite Element Stress Analysis ◽  
Finite Element Stress

The static strength and dynamic characteristic of connecting rod used in model 10/7 L type air compressor with double actions was studied, the 3D model of connecting rod was established by SolidWorks software, and the finite element stress analysis and modal analysis were done by ANSYS; the analysis results can be used as the base to improve the design of the connecting rod.

Failure analysis of a failed connecting rod cap and connecting bolts of a reciprocating compressor

2017 ◽  
Vol 74 ◽  
pp. 218-227 ◽  
Author(s):  
Xiaolei Zhu ◽  
Jing Xu ◽  
Yang Liu ◽  
Bo Cen ◽  
Xiaofeng Lu ◽  
...  
Keyword(s):  
Failure Analysis ◽  
Reciprocating Compressor ◽  
Connecting Rod

Analysis on Static Characteristics of Flipping Horizontal Machining Center

2014 ◽  
Vol 716-717 ◽  
pp. 577-581
Author(s):  
Rui Shao ◽  
Ding Wen Yu ◽  
Ping Fa Feng ◽  
Hui Shu Jia
Keyword(s):  
Static Analysis ◽  
Ball Screw ◽  
Electronic Document ◽  
Static Characteristics ◽  
Machining Performance ◽  
Machining Center ◽  
Interface Modeling

The worktable and the mainframe of the flipping horizontal machining center can be separated. The performance of the mainframe largely determines the machining performance of the whole machine. The deformation of mainframe under the application of certain forces demonstrates its static characteristics, which helps to find the vulnerable points for improvements. This paper mainly discusses the modeling of ball screw interfaces by taking into account the interface modeling. Static analysis is made by using Workbench to provide guidance for structural improvements.This electronic document is a “live” template and already defines the components of your paper [title, text, heads, etc.] in its style sheet.

Finite Element Static Analysis of YP2080 Automatic Hydraulic Press

2014 ◽  
Vol 556-562 ◽  
pp. 1046-1049
Author(s):  
Dong Qing Lv
Keyword(s):  
Finite Element ◽  
Static Analysis ◽  
Three Dimensional ◽  
Hydraulic Press ◽  
Stress And Strain ◽  
Design And Optimization ◽  
Dimensional Models ◽  
Three Dimensional Models

The paper took 2080 tons automatic hydraulic tile press as the research object, completed the finite element static analysis of its beam and base. Established their three-dimensional models with CAD software Pro/ENGINEER, and then analyzed the stress and transfiguration with CAE software ANSYS. Studied the distribution of the stress and strain, and found their maximum and location. The result can provide some good reference for design and optimization.

Three Dimensional Thermo-Mechanical Model of Different Thermocouple Embedded Modes Analysis

2011 ◽  
Vol 291-294 ◽  
pp. 263-268
Author(s):  
Li Gen Sun ◽  
Jia Quan Zhang
Keyword(s):  
Temperature Field ◽  
Mechanical Model ◽  
Three Dimensional ◽  
Point Of View ◽  
Stress And Strain ◽  
Back Side ◽  
Maximum Stresses

The embedded thermocouples have been analyzed with the consideration of their temperature effectiveness and the life of mould plates. Three dimensional FEM models have been adopted to study the effect of different installation of the thermocouples. The thermocouples installation methods, whatever from the back side of the plates or from the top or bottom, have been observed with little effect on the temperature field of the copper plates. But the effective Mises stress and strain are influenced obviously. The maximum stresses have been observed in the area of thermocouples channel with holes from back side of the plates. From this point of view, the holes from top or bottom of the plates are more reasonable.

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