Analysis of Statics and Transient Responses on Automotive Gearbox Casing

2013 ◽  
Vol 312 ◽  
pp. 307-311
Author(s):  
Guang Yao Zhao ◽  
Li Yang Xie ◽  
Yi Feng Zhao ◽  
Kun Yu Wang
Keyword(s):  
Dynamic Stiffness ◽  
Excitation Frequency ◽  
Three Dimensional ◽  
Dynamic Strength ◽  
Transient Dynamic Analysis ◽  
Element Analysis ◽  
Transient Dynamic ◽  
Strength And Stiffness ◽  
Reverse Gear ◽  
Relationship Of

The three-dimensional solid modeling is built based on some Automobile gearbox Product, the dangerous working conditions of static load are analyzed. On the basis of ADAMS, transient dynamic loads of gearbox at different working gears are found out. The finite element analysis modeling of gearbox casing is built. The static displacement and the stress distribution of gearbox casing are obtained, and the static strength and stiffness are evaluated. The eigenvalues of vibration of gearbox casing are solved, the coupling relationship of the excitation frequency and the gearbox casing natural frequency is analyzed. Based on the transient dynamic analysis of gearbox casing at the first gear and the reverse gear, the evaluations of the dynamic strength and dynamic stiffness are obtained and the weak position of structure is found out, which provides the beneficial information for the further study on the design of the fatigue and reliability of gearbox casing.

Dynamic Analysis of Helical Milling Unit Based on Virtual Machine Tool

2011 ◽  
Vol 188 ◽  
pp. 463-468 ◽  
Author(s):  
Xu Da Qin ◽  
Qi Wang ◽  
H.Y. Wang ◽  
Song Hua
Keyword(s):  
Machine Tool ◽  
Virtual Machine ◽  
Dynamic Stiffness ◽  
Three Dimensional ◽  
Geometrical Model ◽  
Helical Milling ◽  
Response Analysis ◽  
Computer Simulation Model ◽  
Element Analysis ◽  
Virtual Machine Tool

The virtual prototype is a computer simulation model of the physical product that can be analyzed like a real machine. This paper studies the helical milling unit based on the virtual machine tool. The helical milling unit is first designed according to the kinematics of the helical milling. The main parts of the equipment include rotating mechanism, orbital agency and radial offset organization. Based on the feasibility analysis of the structure, the three-dimensional geometrical model is built in the Solidworks software. The key parts in the model are separated from the device and introduced into the finite element analysis (FEA) software, according to the cutting loads tested from experiment, static and dynamic modal analysis and harmonic response analysis are carried out for the key parts of this device. The results show that the static and dynamic stiffness can meet design requirement.

Finite Element Analysis of Elliptical Chord

2013 ◽  
Vol 3 (4) ◽  
pp. 44-61
Author(s):  
K. S. Narayana ◽  
R. T. Naik ◽  
R. C. Mouli ◽  
L. V. V. Gopala Rao ◽  
R. T. Babu Naik
Keyword(s):  
Finite Element ◽  
Natural Frequencies ◽  
Three Dimensional ◽  
Compressive Load ◽  
Dynamic Strength ◽  
Element Analysis ◽  
T Joints ◽  
Shell Elements ◽  
Tubular Joints ◽  
Plane Bending

The work presents the Finite element study of the effect of elliptical chords on the static and dynamic strength of tubular T-joints using ANSYS. Two different geometry configurations of the T-joints have been used, namely Type-1 and Type-2. An elastic analysis has been considered. The Static loading conditions used are: axial load, compressive load, In-plane bending (IPB) and Out-plane bending (OPB). The natural frequencies analysis (dynamic loading condition) has also been carried out. The geometry configurations of the T-joints have been used, vertical tubes are called brace and horizontal tubes are called chords. The joint consists of brace joined perpendicular to the circular chord. In this case the ends of the chord are held fixed. The material used is mild steel. Using ANSYS, finite element modeling and analysis of T-joint has been done under the aforementioned loading cases. It is one of the most powerful methods in use but in many cases it is an expensive analysis especially due to elastic–plastic and creep problems. Usually, three dimensional solid elements or shell elements or the combination of two types of elements are used for generating the tubular joints mesh. In tubular joints, usually the fluid induced vibrations cause the joint to fail under resonance. Therefore the natural frequencies analysis is also an important issue here. Generally the empirical results are required as guide or comparison tool for finite element investigation. It is an effective way to obtain confidence in the results derived. Shell elements have been used to model the assembled geometry. Finite element ANSYS results have been validated with the LUSAS FEA and experimental results, that is within the experimentation error limit of ten percentage.

Optimum Design of Engine Test Bench Based on Finite Element Analysis

2011 ◽  
Vol 338 ◽  
pp. 255-258 ◽  
Author(s):  
Shao Bo Wen
Keyword(s):  
Test Bench ◽  
Excitation Frequency ◽  
Three Dimensional ◽  
Natural Vibration Frequency ◽  
Maximum Displacement ◽  
Element Analysis ◽  
Vehicle Engine ◽  
Stress And Deformation ◽  
The Stability ◽  
Engine Excitation

A test bench of vehicle engine is designed and the three-dimensional solid model is established in UG software. Then the model is imported into ANSYS software to conduct static stress analysis, the stress and deformation distribution of test bench are obtained, referenced the results and the bracket are optimized to improve support ability, the maximum stress and the maximum displacement of test bench decreased 66.9% and 76.9%, respectively. Lastly modal analysis of test bench is performed, the chassis base is strengthen design according to the first-order mode shape, then the first natural vibration frequency is heightened 91.0%, it is far away from the engine excitation frequency range, the stability of test bench is enhanced.

Piston Engine Connecting Rod Transient Dynamic Finite Element Analysis and Maintenance Strategy

2014 ◽  
Vol 484-485 ◽  
pp. 272-276
Author(s):  
Fa Jun Ding
Keyword(s):  
Finite Element ◽  
Equivalent Stress ◽  
Fatigue Reliability ◽  
Connecting Rod ◽  
Piston Engine ◽  
Transient Dynamic Analysis ◽  
Element Analysis ◽  
Time Curve ◽  
Transient Dynamic ◽  
Maximum Equivalent Stress

Connecting rod is the very important connection and force bearing parts of piston engine crank mechanism; work in the role of various kinds of alternating stress. Taking a general rod from Lycoming IO-360-A1B6 aero-piston engine as the analysis object, first, a 3-D finite element model of the rod is established in ANSYS Workbench. And then, considering the influence of gas pressure in cylinder after ignition acting on the connecting rod under engines rated speed conditions, through the transient dynamic analysis, find in all load steps, the maximum equivalent stress occurred at the transition zone between the shaft and little head, and received the maximum equivalent stress versus time curve, to provide numerical basis for improving high-cycle fatigue reliability of the rod. Finally, according to equivalent stress contours of the rod when gas in cylinder peak pressure occurs, initially identified rods hazardous areas,to provide foundation for the development of standard repair process.

Finite-Element Analysis of Ultrahigh Leaf-Shaped Steel Sculpture

2013 ◽  
Vol 421 ◽  
pp. 747-750
Author(s):  
Meng Sha Liu ◽  
Ying Huang ◽  
Jin San Ju
Keyword(s):  
Finite Element ◽  
Structural Parameters ◽  
Three Dimensional ◽  
Three Dimensional Model ◽  
Element Analysis ◽  
Finite Element Software ◽  
Gravity Load ◽  
Practical Engineering ◽  
Earthquake Action ◽  
Strength And Stiffness

In this paper, a three-dimensional model of a steel sculpture was analyzed by using the finite element software ANSYS. The structural static response were achieved respectively under gravity load, ice load and wind load based on wind tunnel tests with the dynamic response under earthquake action. Besides, the structural parameters such as strength and stiffness under different conditions were also got. It is hoped that the analysis of ultrahigh steel sculpture will offer some technical support for practical engineering.

Finite Element Analysis of Wind Turbine Lifting Platform Bridge Structure

2014 ◽  
Vol 687-691 ◽  
pp. 398-401 ◽  
Author(s):  
Yu Tang ◽  
Yu Hou Wu ◽  
Ke Zhang ◽  
Jia Sun ◽  
En Wei Song
Keyword(s):  
Wind Turbine ◽  
Modal Analysis ◽  
Optimization Design ◽  
Three Dimensional ◽  
Bridge Structure ◽  
Element Analysis ◽  
Nature Frequency ◽  
New Type ◽  
Strength And Stiffness ◽  
Ansys Workbench

Designed a new type of wind turbine internal maintenance lifting platform using three-dimensional drawing software SolidWorks to establish the 3D model for the internal maintenance lifting platform. Imported platform bridge part to ANSYS Workbench static and modal analysis module; make load analysis according to the wind turbine operating environment and platform’s most dangerous operating condition and obtain the maximum stress of platform bridge structure and place and form of deformation. Obtained multiple order natural frequency and vibration mode of platform bridge structure through modal analysis. Compared with the standard, it shows that this structure satisfies the strength and stiffness requirement and will generate frequency affecting human body higher than the nature frequency. This thesis provides a theoretical foundation for designing the wind driven generator internal lifting platform and provides a reference for optimization design.

The Influence of Bolt Layout Form to the Dynamic Stiffness of the Column

2014 ◽  
Vol 577 ◽  
pp. 222-227
Author(s):  
Chen Shen ◽  
Zhong Ping Hua ◽  
Meng Sha Zhang ◽  
Zhou Zhang
Keyword(s):  
Natural Frequency ◽  
Dynamic Stiffness ◽  
Three Dimensional ◽  
Element Analysis ◽  
Three Dimensional Modeling ◽  
Lower Natural Frequency ◽  
Dimensional Modeling ◽  
Modeling Software ◽  
Set Up ◽  
Bolt Arrangement

In the case of the column materials to determined, the lower natural frequency of column is determined by the number of coupling bolts and bolt arrangement. In this paper, by three-dimensional modeling software of Solidwork column model of hobbing is set up, then by using ANSYS finite element analysis software. The initial four order natural frequency to the different number of connection bolts and the different arrangement of bolt are respectively calculated. After the initial four order natural frequency are contrasted, we conclude that in the case of merely considering dynamic stiffness this study reach it is the most reasonable to select 8-12 bolts in the hobbing of YKQ31300, and different bolt arrangement of effects on the dynamic stiffness of the column is very small and can be ignored.

Transient Dynamic Analysis of Maglev Linear Feed Unit

2011 ◽  
Vol 317-319 ◽  
pp. 405-409
Author(s):  
An Dong Jiang ◽  
Jiang Jin ◽  
Su Yang Ma ◽  
Zheng Peng Xia ◽  
Ping Liao
Keyword(s):  
Finite Element ◽  
Dynamic Analysis ◽  
Magnetic Levitation ◽  
Element Model ◽  
Design Stage ◽  
Transient Dynamic Analysis ◽  
Element Analysis ◽  
Forecast Performance ◽  
Transient Dynamic ◽  
Feed Unit

Abstract. The magnetic levitation linear feed unit is a new type of machine features. In machining, the tool and workpiece interaction force will be delivered to the table and make the deformation, resulting in processing errors of machine tools, machining of precision and surface quality. In this paper we established three-dimensional finite element model of the table of feed unit, use the finite element analysis software ANSYS to analysis of the transient dynamic analysis of the pre-designed table and improve the structure of the table at the design stage and forecast performance of the table and provide a theoretical basis for structure optimization.

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