Finite Element Analysis of the Thermal Field of Piston in an External Combustion Cam Engine

2011 ◽  
Vol 66-68 ◽  
pp. 1240-1244
Author(s):  
Sheng Yao Gao ◽  
De Shi Wang ◽  
Qi Zheng Zhou
Keyword(s):  
Finite Element ◽  
Temperature Field ◽  
Optimization Design ◽  
Structural Parameters ◽  
Element Model ◽  
Von Mises Stress ◽  
Strength Analysis ◽  
Element Analysis ◽  
Technical Improvement ◽  
External Combustion

As the most dominative component under stress in an external combustion cam engine, the working condition of piston is very rigor. Once new design type and technical improvement is applied, it is necessary to analysis its thermal load and take secure steps. And the finite element model on each conditions of thermal is calculated, which is used to estimate the temperature field and provide a theoretical basis for further structural strength analysis and optimization design. Choosing analysis results of the piston as reference and taking five structural parameters of the piston as design variables, two objective functions including piston mass and maximal Von Mises stress are respectively considered. The optimum design of the piston is executed and the results indicate that it is feasible to improve temperature field and strength of the piston. These results enrich and develop the research on structural analysis and optimization of spatial engine, which are of guiding significance for analyzing engine strength and related problem in theoretically.

Structural Optimization of the Telescopic Boom of a Certain Type of Truck-Mounted Crane

2014 ◽  
Vol 548-549 ◽  
pp. 383-388
Author(s):  
Zhi Wei Chen ◽  
Zhe Cui ◽  
Yi Jin Fu ◽  
Wen Ping Cui ◽  
Li Juan Dong ◽  
...  
Keyword(s):  
Finite Element ◽  
Static Analysis ◽  
Cross Sections ◽  
Optimization Design ◽  
Structural Parameters ◽  
Vertical Direction ◽  
Element Model ◽  
Shape Parameters ◽  
Conventional Design ◽  
Design Variables

Parametric finite element model for a commonly used telescopic boom structure of a certain type of truck-mounted crane has been established. Static analysis of the conventional design configuration was performed first. And then an optimization process has been carried out to minimize the total weight of the telescopic structures. The design variables include the geometric shape parameters of the cross-sections and the integrated structural parameters of the telescopic boom. The constraints include the maximum allowable equivalent stresses and the flexure displacements at the tip of the assembled boom structure in both the vertical direction and the circumferential direction of the rotating plane. Compared with the conventional design, the optimization design has achieved a significant weight reduction of up to 24.3%.

An Improved Control Arm Design for a Commercial Vehicle

2021 ◽  
Author(s):  
Sinan Yıldırım ◽  
Ufuk Çoban ◽  
Mehmet Çevik
Keyword(s):  
Finite Element ◽  
Cost Effective ◽  
Element Model ◽  
Tensile Tests ◽  
The Body ◽  
Von Mises Stress ◽  
Driving Safety ◽  
Design Development ◽  
Element Analysis ◽  
Von Mises

Suspension linkages are one of the fundamental structural elements in each vehicle since they connect the wheel carriers i.e. axles to the body of the vehicle. Moreover, the characteristics of suspension linkages within a suspension system can directly affect driving safety, comfort and economics. Beyond these, all these design criteria are bounded to the package space of the vehicle. In last decades, suspension linkages have been focused on in terms of design development and cost reduction. In this study, a control arm of a diesel public bus was taken into account in order to get the most cost-effective design while improving the strength within specified boundary conditions. Due to the change of the supplier, the control arm of a rigid axle was redesigned to find an economical and more durable solution. The new design was analyzed first by the finite element analysis software Ansys and the finite element model of the control arm was validated by physical tensile tests. The outputs of the study demonstrate that the new design geometry reduces the maximum Von Mises stress 15% while being within the elastic region of the material in use and having found an economical solution in terms of supplier’s criteria.

Temperature Field Numerical Analysis of Machining Process Based on the Finite Element Analysis

2014 ◽  
Vol 621 ◽  
pp. 611-616 ◽  
Author(s):  
Yan Juan Hu ◽  
Yao Wang ◽  
Zhan Li Wang
Keyword(s):  
Finite Element ◽  
Temperature Field ◽  
Metal Cutting ◽  
Orthogonal Cutting ◽  
Cutting Temperature ◽  
Cutting Parameters ◽  
Element Model ◽  
Machining Process ◽  
Element Analysis ◽  
Mechanical Coupling

In order to study the temperature field distribution in the process of machining, the finite element theory was used to establish the orthogonal cutting finite element model, and the key technologies were discussed simultaneously. By using ABAQUS software for cutting AISI1045 steel temperature field of numerical simulation, the conclusion about changing rule of cutting temperature field can be gotten. The results show that this method can efficiently simulate the distribution of temperature field of the workpiece, cutter and scraps, which is effected by thermo-mechanical coupling in metal work process. It provides the theory evidence for the intensive study of metal-cutting principle, optimizing cutting parameters and improving processing technic and so on.

The Design and Finite Element Analysis for Crane Turntable Gear Based on Pro/E and ANSYS

2013 ◽  
Vol 710 ◽  
pp. 243-246
Author(s):  
Xian Hong Yang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Product Design ◽  
Optimization Design ◽  
Three Dimensional ◽  
Reference Value ◽  
Element Model ◽  
Helical Gear ◽  
Engineering Analysis ◽  
Element Analysis

The use of Pro/E and their respective advantages ANSYS software product design and engineering analysis to solve the case, first of all in the Pro/E, the completion of three-dimensional helical gear design, and then in the Pro/MECHANICA completed finite element model of helical gear, and then into ANSYS for finite element analysis of bevel gear calculation and simulation, finite element analysis of the final results of optimization design model is presented recommendations for improvement. The product design and engineering analysis method has some reference value in engineering design.

scholarly journals Finite life fatigue design of spiral springs of dual-mass flywheels: Analytical estimation and experimental results

2018 ◽  
Vol 10 (6) ◽  
pp. 168781401877847 ◽  
Author(s):  
Daniela Maffiodo ◽  
Raffaella Sesana ◽  
Dino Paolucci ◽  
Sabrina Bertaggia
Keyword(s):  
Finite Element ◽  
Optimization Design ◽  
Three Dimensional ◽  
Element Model ◽  
Installation Space ◽  
Maximum Speed ◽  
Estimation Model ◽  
Element Analysis ◽  
Life Estimation ◽  
Three Dimensional Finite Element

A procedure to design the spiral springs finite life for dual-mass flywheels is presented. Due to design constraints, installation space, production processes, stiffness requirement, maximum torque, and maximum speed, these components are dimensioned for finite life. Two- and three-dimensional finite element model static structural analysis was performed to obtain the stress distribution, deformed shape, and to validate optimization design. The fatigue analysis was performed both experimentally and by means of a component life estimation model. An experimental duty cycle was applied. Finite element analysis and experimental analysis agree in pointing out the location and the value of maximum stresses and the shape of deformation. Vehicle tests highlight premature spiral springs’ failures, which do not agree with life estimation. The examination of the fracture showed that fretting and wear, along with fatigue phenomena, are the causes of premature failures. A dedicated component life estimation model is required, taking into account of wear and loading history.

Finite Element Analysis of Gold Bonding under Different Loading Conditions

2014 ◽  
Vol 607 ◽  
pp. 713-716
Author(s):  
Wen Liang Tang ◽  
Chun Yue Huang ◽  
Tian Ming Li ◽  
Ying Liang ◽  
Guo Ji Xiong ◽  
...  
Keyword(s):  
Finite Element ◽  
Three Dimensional ◽  
Element Model ◽  
Simulation Software ◽  
Bonding Time ◽  
Von Mises Stress ◽  
Bonding Pressure ◽  
Element Analysis ◽  
Von Mises ◽  
Three Dimensional Finite Element

In this paper, ANSYS-LSDYNA simulation software is used to build the three-dimensional finite element model of the ball bond and to get the Von Mises stress. The change of stress about the bump is researched which base on the model in different bonding pressure, bonding power and bonding time. The result show that: The stress increase with bonding pressure increase within a certain bonding pressure range, and then the stress will maintain a table number, however, the stress will continue to increase when the bonding pressure reach a certain value; increasing the bonding power, the area of lager stress will grow; prolonging the bonding time, the stress of the pad will increase with time, but when time increase to a certain value, the stress of the pad will not increase over time.

Finite Element Analysis of Impact of Root Fillet on Bending Stress for Helical Gear of Automotive Transmission

2012 ◽  
Vol 184-185 ◽  
pp. 214-217
Author(s):  
Fei Xie ◽  
Jian Hua Wang ◽  
Yun Cheng Wang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Optimization Design ◽  
Geometric Model ◽  
Helical Gear ◽  
Strength Analysis ◽  
Bending Stress ◽  
Element Analysis ◽  
Automotive Transmission ◽  
Transmission Gear

On the basis of the analysis of special demand of helical gear of automotive transmission, gear precision modeling and finite element analysis of bending stress were carried out in this paper. In UG three-dimensional modeling environment, helical gear model was generated and imported into ANSYS software. Then the meshing on the geometric model and influence on gear strength with different radius of root fillet were discussed. The paper provided certain methods to guide the gear parametric design, strength analysis and improve optimization design efficiency of transmission gear parts.

Finite Element Analysis of Hydraulic Clipping Machine Shear Platform Dased on ANSYS

2014 ◽  
Vol 945-949 ◽  
pp. 190-193
Author(s):  
Hai Lin Wang ◽  
Yi Hua Sun ◽  
Ming Bo Li ◽  
Gao Lin ◽  
Yun Qi Feng ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Stress Distribution ◽  
Elastic Strain ◽  
Optimization Design ◽  
Equivalent Stress ◽  
Element Model ◽  
Element Analysis ◽  
Maximum Equivalent Stress

Q43Y-85D type crocodile hydraulic clipping machine was taken as research object to optimization design. A finite element model for clipping machine was built using shell unit as fundamental unit. ANSYS12.0 finite element method was used to analyze the deformation and stress distribution of the shear platform model of hydraulic clipping machine. The result showed that the maximum equivalent stress at the dangerous area was 368.162 MPa and the maximum elastic strain was 0.1814×10-2 mm. After the structural optimization design, it was found that the maximum equivalent stress decreased to 186.238 MPa which did not exceed the material’s yield limitation 215 MPa and the maximum elastic strain decreased to 0.919×10-3 mm which satisfied the requirement of stiffness.

Direct Strength Analysis of Semi-Submersible Platform Structures

2004 ◽  
Author(s):  
Haibin Zhang ◽  
Huilong Ren ◽  
Yangshan Dai
Keyword(s):  
Finite Element ◽  
Interpolation Method ◽  
Fluid Dynamic ◽  
Dynamic Pressure ◽  
Three Dimensional ◽  
Element Model ◽  
Strength Analysis ◽  
Wave Load ◽  
Element Analysis ◽  
Wet Surface

A kind of direct strength analysis method of semi-submersible platform structures is presented in this paper. With the differences in shape of pontoon, column and beam being considered, the method of accumulative chord length cubic parameter spline function combined with analytic expression is adopted to generate the mesh of platform wet surface. The hydrodynamic coefficients of the platform are calculated by the three-dimensional potential flow theory of the linear hydrodynamic problem for platforms with low forward speed. The equations of platform motions are established and solved in frequency domain, and the responses of wave-induced loads on the platforms are calculated. According to the mesh of hydrodynamic computation, the fluid dynamic pressure field of platform wet surface is built, and the pressure loads on shell elements in the finite element model of the structure are calculated by the interpolation method. The calculation conditions and loads in the finite element analysis (FEA) of the platform structures are determined according to the design wave analysis approach. A computer program based on this method has been developed, and a calculation example of semi-submersible platform is illustrated. Analysis results show that this method is a satisfying approach for wave load computation and direct strength analysis of the semi-submersible platforms.

Static Strength Analysis of Components of Flap Control System for a Certain Type of Aircraft

2013 ◽  
Vol 401-403 ◽  
pp. 422-426 ◽  
Author(s):  
Feng Zhu Zheng ◽  
Wei Min Cui ◽  
Hong Juan Li
Keyword(s):  
Finite Element ◽  
Control System ◽  
Optimization Design ◽  
Simulation Analysis ◽  
Element Model ◽  
Static Strength ◽  
Strength Analysis ◽  
Aircraft Control ◽  
Control Effect ◽  
Aircraft Control System

Pull rod and rocker arm are important parts of aircraft control system, its strength, stiffness and stability can largely affect the aircrafts control effect, sometimes the flight safety will be influenced [2]. A type of aircraft control system has been upgraded and modified, therefore the pull rod and rocker arm of the flap control system need to take the static strength test. Based on field test and finite element simulation analysis, this paper has the static strength of pull rod and rocker arm checked, and to verify the correctness of the finite element model and lay foundation for the optimization design of components of aircraft control system.

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