Simulation Analysis of Engine-Oil inside the Clearance between Crankshaft Journal and Bearing Shells in the Ideal Stable Conditions

2014 ◽  
Vol 635-637 ◽  
pp. 532-536
Author(s):  
Pei Shu ◽  
Hong Xin Zhang ◽  
Ru Qin Xiao ◽  
Jin Zhu Shi
Keyword(s):  
Simulation Analysis ◽  
Geometric Model ◽  
Engine Oil ◽  
Flow State ◽  
Engine Operation ◽  
Stable Conditions ◽  
Crankshaft Journal ◽  
Oil Flow ◽  
3D Geometric Model ◽  
The Ideal

For the bush-burning problem in the course of the engine operation. Taking a certain kind of engine as reference, build a 3D geometric model of the engine-oil flow field in the ideal stable conditions with GAMBIT and conduct a simulation of it with FLUENT. It reveals that we can have an intuitive understanding of the flow state and pressure distribution of the engine-oil inside the clearance between the crankshaft main journal and crankshaft bearing as well as the rod journal and rod bearing which provides basis for a further refining of bearing lubrication system, improving the lubrication method and enhancing the efficiency of the lubrication.

Research and Development on CAD/CAE Integration of Casting Process System Based on IGES Neutral File

2013 ◽  
Vol 762 ◽  
pp. 230-235 ◽  
Author(s):  
Hong Tao Tang ◽  
Jian Xin Zhou ◽  
Xu Shen ◽  
Dun Ming Liao ◽  
Sheng Yong Pang ◽  
...  
Keyword(s):  
Data Exchange ◽  
Simulation Analysis ◽  
Geometric Model ◽  
Casting Process ◽  
Cad Systems ◽  
Second Development ◽  
3D Cad ◽  
Cad System ◽  
Process System ◽  
3D Geometric Model

Nowadays, most 3D casting process CAD systems are developed based on second development tools of various 3D CAD systems. However the type and version escalation of various 3D CAD systems in foundry enterprises greatly limit the application of 3D casting process CAD systems. By the data exchange between the neutral file format of 3D geometric model, these problems can be well solved. In this study, by taking advantage of universal CAD data-exchange standard iges for data exchange, a practical 3D CAD system was developed based on opencascade geometry kernel. The system has the function of design and modeling of practical casting process such as part information extraction, parting surface, gating system, riser system and so on. Finally taking a steel casting for example, the casting process is exported in the file of stl and the simulation analysis is carried by intecast software which demonstrate the system based on iges neutral file can well support the integration of casting CAD and CAE.

scholarly journals Simulation of the oil supply through the connecting rod to the piston cooling channels in medium speed engines

2020 ◽  
Vol 180 (1) ◽  
pp. 25-30
Author(s):  
Maciej JASKIERNIK ◽  
Konrad BUCZEK ◽  
Jędrzej WALKOWIAK
Keyword(s):  
Compression Ratio ◽  
Flow Simulation ◽  
Engine Oil ◽  
Connecting Rod ◽  
Engine Operation ◽  
Oil Supply ◽  
Cooling Channels ◽  
Medium Speed ◽  
Oil Flow ◽  
Piston Cooling

The importance of the oil flow simulation in connecting rod oil channels during the engine development process is recently increasing. This can be observed either in medium speed engines, where, as one of the traditional solutions, the oil for piston cooling is supplied through the connecting rod, or in automotive engine VCR (variable compression ratio) connecting rods, where engine oil is used to change the compression ratio of the engine. In both cases, precise numerical results are necessary to shorten the prototyping period and to reduce the overall development cost. The multi-physics character of the simulation problem basically consists of the interaction between the dynamics of the crank train components and the oil flow. For the oil supply to the piston cooling channels through the connecting rod in medium speed engines, being the objective of this paper, a major influencing factor is the oil pressure behavior in the piston cooling gallery providing periodical interaction with its supply. At the same time, the connecting rod elastic deformation during engine operation can be regarded as negligible and the planar motion of the connecting rod can be reproduced by combination of translational and rotational acceleration fields in the CFD solver. The paper includes the description of the applied simulation approach, the results and a comparison with the state-of-the art calculation without consideration of the above-mentioned influencing factors.

scholarly journals Seismic Analysis of a Viscoelastic Damping Isolator

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
Bo-Wun Huang ◽  
Jao-Hwa Kuang ◽  
Jung-Ge Tseng ◽  
Jyun-Cin Wang ◽  
Yu-Xian Qiu
Keyword(s):  
Simulation Analysis ◽  
Seismic Analysis ◽  
Geometric Model ◽  
Viscoelastic Damping ◽  
High Rise ◽  
Finite Element Package ◽  
Shock Impact ◽  
Improved Design ◽  
Earthquake Zone ◽  
3D Geometric Model

Seismic prevention issues are discussed much more seriously around the world after Fukushima earthquake, Japan, April 2011, especially for those countries which are near the earthquake zone. Approximately1.8×1012kilograms of explosive energy will be released from a magnitude 9 earthquake. It destroys most of the unprotected infrastructure within several tens of miles in diameter from the epicenter. People can feel the earthquake even if living hundreds of miles away. This study is a seismic simulation analysis for an innovated and improved design of viscoelastic damping isolator, which can be more effectively applied to earthquake prevention and damage reduction of high-rise buildings, roads, bridges, power generation facilities, and so forth, from earthquake disaster. Solidworks graphic software is used to draw the 3D geometric model of the viscoelastic isolator. The dynamic behavior of the viscoelastic isolator through shock impact of specific earthquake loading, recorded by a seismometer, is obtained via ANSYS finite element package. The amplitude of the isolator is quickly reduced by the viscoelastic material in the device and is shown in a time response diagram. The result of this analysis can be a crucial reference when improving the design of a seismic isolator.

Hoist Sheave Structure Optimization and Lightweight

2015 ◽  
Vol 741 ◽  
pp. 133-137
Author(s):  
Xian Zhao Jia ◽  
Yong Fei Wang
Keyword(s):  
Working Condition ◽  
Geometric Model ◽  
Structure Optimization ◽  
Element Model ◽  
Stiffened Plate ◽  
Optimal Result ◽  
Ansys Software ◽  
Table Analysis ◽  
3D Geometric Model ◽  
Relational Table

To ensure wheel body of the hoisting sheave strength and stability condition. For the purpose of wheel body lightweighting. There are two schemes to reduce body weight.Reduce the spokes at the same time increase the ring stiffened plate, and reduce the spokes at the same time change the spokes width and thickness.The wheel body was established based on Pro/E 3D geometric model. Import the mesh in the Workbench of ANSYS software for finite element model. Statics analysis to select the optimized scheme. Establish a hoisting sheave wheel body under the actual working condition of widening the width - deformation - wheel weight relational table. Analysis to lightweight at the same time ensure that stiffness of wheel,then it can obtaine the optimal result.

Numerical Simulation on Velocity Profiles of Mill Bearing Lubrication

2010 ◽  
Vol 145 ◽  
pp. 282-286
Author(s):  
Qing Xue Huang ◽  
Jian Mei Wang ◽  
Yu Gui Li ◽  
Li Feng Ma ◽  
Chun Jiang Zhao
Keyword(s):  
Cross Section ◽  
Velocity Profiles ◽  
Flow State ◽  
Oil Film ◽  
Velocity Gradients ◽  
Oil Flow ◽  
The Mathematical Model ◽  
The Relationship ◽  
General Velocity ◽  
Oil Film Pressure

No 460 oil-film bearing oil as the dedicated lubricant is regarded as the incompressible Newtonian fluid. To comprehensively analyze the real oil flow state, the mathematical model on velocity profiles, together with its dimensionless equations, is established, and the calculating program is developed to simulate the 3D velocity profiles and velocity gradients at different oil flow layers. The relationship between velocity profiles and the oil film pressure is discussed, and the velocity tendency is consistent with the general velocity profile of wedge cross section. The conclusions are beneficial to the further study on lubricating performances of heavy contact components and to prolong their service lives.

Numerical treatment of melting heat transfer and entropy generation in stagnation point flow of hybrid nanomaterials (SWCNT-MWCNT/engine oil)

2021 ◽  
Vol 35 (06) ◽  
pp. 2150102
Author(s):  
Ikram Ullah ◽  
Tasawar Hayat ◽  
Ahmed Alsaedi ◽  
Habib M. Fardoun
Keyword(s):  
Velocity Slip ◽  
Engine Oil ◽  
Stretching Cylinder ◽  
Entropy Analysis ◽  
Hybrid Nanomaterials ◽  
Hybrid Nanomaterial ◽  
Order Analysis ◽  
Governing System ◽  
Oil Flow ◽  
Melting Effect

Present attempt inspects the entropy analysis and melting effect in flow of hybrid nanomaterials consisting of CNTs nanoparticles and engine oil Flow is by a stretching cylinder. Formulation is accountable to the viscous dissipation, velocity slip and thermal radiation impacts. In order to estimate the disorder within the thermo-physical frame, second-order analysis has been used. The governing system with the imposed boundary condition is dimensionless via proper variables. Numerical outcomes are expressed graphically and analyzed. Comparison of hybrid nanomaterial, nanomaterials and regular liquid is expressed graphically. Outcomes indicate that the hybrid nanomaterials have great impact throughout the inspection than the ordinary nanomaterials.

Surface Effects on Engine Materials of Mineral Oil Dilution With Methyl Esters and Biodiesels

2020 ◽  
Vol 8 (2) ◽  
pp. 1-18 ◽  
Author(s):  
Gustavo J. Molina ◽  
Emeka F. Onyejizu ◽  
John L. Morrison ◽  
Valentin Soloiu
Keyword(s):  
Combustion Engine ◽  
Methyl Esters ◽  
Surface Effects ◽  
Mineral Oil ◽  
Engine Oil ◽  
Engine Operation ◽  
Surface Degradation ◽  
Surface Change ◽  
Main Components ◽  
Enhanced Surface

During ordinary internal-combustion engine operation, biodiesels partially mix in the engine-oil, leading to increased surface degradation, as premature wear. Biodiesels are blends of methyl esters as main components, which are dependent on the source feedstock and may lead to different surface effects on engine materials. In this preliminary study of surface change of SAE 1018 steel when adding pure methyl-esters to engine oil, a SAE 15W40 mineral oil was diluted with methyl-palmitate, -oleate, -stearate, -linoleate, -laurate and -myristate, and with two typical biodiesels, soybean oil and peanut oil biodiesel, each at six different dilutions, and tested in two different instruments. Biodiesel at just 5% in oil led to enhanced wear, but some larger fractions of methyl-oleate and -laurate produced negligible surface change enhancements. Addition of methyl-linoleate and -palmitate enhanced surface degradation. Methyl ester compositions of the two tested biodiesels and their wear trends, which are found in good agreement with previous studies, are used to explain the wear differences

The Finite Element Analysis of a Heavy Semi-Trailer Frame Based on ANSYS

2014 ◽  
Vol 644-650 ◽  
pp. 455-458
Author(s):  
Yao Ye ◽  
Yong Hai Wu
Keyword(s):  
Finite Element ◽  
Geometric Model ◽  
Reference Method ◽  
Element Model ◽  
Element Analysis ◽  
Emergency Braking ◽  
The Finite Element Analysis ◽  
New Type ◽  
Stress And Deformation ◽  
3D Geometric Model

Frame has important effects on the performance of the whole of heavy semi-trailer. A heavy semi-trailer frame is analyzed and researched on in the finite-element way in this article. The frame of 3D geometric model is established by using Pro/E. And it was imported into the Hypermesh to establish frame finite element model. Frame are calculated by using ANSYS solver in bending condition, emergency braking conditions and rapid turn conditions of stress and deformation conditions. The computational tools and methods we used provide the new type of frame and development with a reference method to refer to in this paper.

Profile Surface Construction and Pressure Angle Analysis of a New Type of Globoidal Indexing Cam

2010 ◽  
Vol 29-32 ◽  
pp. 1608-1614 ◽  
Author(s):  
Lei Li ◽  
Xian Ying Feng ◽  
Zi Ping Zhang ◽  
Xing Chang Han ◽  
Ya Qing Song
Keyword(s):  
Geometric Model ◽  
Three Dimensional ◽  
Surface Equation ◽  
Cam Mechanism ◽  
Pressure Angle ◽  
Three Dimensional Modeling ◽  
Meshing Equation ◽  
New Type ◽  
Three Dimensional Coordinate ◽  
3D Geometric Model

This paper presents a new type of globoidal indexing cam mechanism with steel ball. The characteristic of this mechanism has double circular arc section for cam raceway. Due to this kind of cam raceway section the mechanism can realize approximate rolling transmission. According to rotary transform tensor theory profile surface equation of globoidal cam is established. Meshing equation is built through meshing theory, and profile surface equation is determined by meshing equation. Based on profile surface equation 3D geometric model for globoidal cam is established. MATLAB software is used to calculate three-dimensional coordinate points, these coordinate points are imported into Pro/E software, and finally 3D model for globoidal cam is established by three-dimensional modeling function of Pro/E software. Pressure angle equation of globoidal cam is also established. On the condition that the other parameters remain unchanged the variation law of values of pressure angle depended on cam angle and indexing plate rotary radius is obtained respectively.

scholarly journals Analysis and Testing of Debris Monitoring Sensors for Aircraft Lubrication Systems

Proceedings ◽  
2018 ◽  
Vol 2 (8) ◽  
pp. 461 ◽  
Author(s):  
Etienne Harkemanne ◽  
Olivier Berten ◽  
Patrick Hendrick
Keyword(s):  
Test Bench ◽  
Aircraft Engine ◽  
Engine Oil ◽  
Oil Lubrication ◽  
Aircraft Engines ◽  
Test Results ◽  
Functional Tests ◽  
Test Plan ◽  
Test Parameters ◽  
Oil Flow

In an aircraft engine, some pieces are describing a rotating movement. These parts are in contact with rotating and non-rotating parts through the bearings and gears. The different contact patches are lubricated with oil. During the lifetime of the engine, mechanical wear is produced between the contacts. This wear of the bearings and gears will produce some debris in the oil circuit of the engine. To ensure the effective operation of the aircraft engines, the debris monitoring sensors play a significant role. They detect and collect the debris in the oil. The analysis of the debris can give an indication of the overall health of the engine. The aim of the paper is to develop, design and model an oil test bench to simulate the oil lubrication circuit of an aircraft engine to test two different debris monitoring sensors. The methodology consists of studying the oil lubrication system of the aircraft engine. The first step is to build the oil test bench. Once the oil test bench is functional, tests are performed on the two debris monitoring sensors. A test plan is followed, three sizes of debris, like the type and sizes of debris found in the aircraft engine oil, are injected in the oil. The test parameters are the oil temperature, the oil flow rate and the mass of debris injected. Each time debris is injected, it is detected and caught by the two sensors. The test results given by the two sensors are similar to the mass debris injected into the oil circuit. The two sensors never detect the total mass of debris injected in the oil. On average, 55%–60% of the mass injected is detected and caught by the two sensors. The sensors are very efficient at detecting debris whose size corresponds to the design range parameters of the sensors, but the efficiency falls when detecting debris whose size lies outside this range.

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