Definitions of the problem and its domain. Discretisation of the domain the continuu Identification of state variable.
Formulation of the problem. Establishing coordinate system. Constructing approximate functions for the elements.
Obtaining element matrix and equation. Coordinate transformation. Assembly of element equations. Introduction of the final set of simultaneous equation. Currently, he is working in the sheet metal industry as a designer. Additionally, he has interested in Product Design, Animation, and Project design. He also likes to write articles related to the mechanical engineering field and tries to motivate other mechanical engineering students by his innovative project ideas, design, models and videos.
Automatic Lubrication System An Automatic Lubrication System ALS often referred to as a centralized lubrication system is a system that delivers a controlled amount of lubricant either grease or Table of Contents.
Abstract : This project mainly deals with the design, analysis and manufacture of piston. Piston is a component of reciprocating engines, reciprocating pumps, gas compressors and pneumatic cylinders among other similar mechanisms. Here the piston is designed, analyzed and the manufacturing process has been studied.
Piston temperature has considerable influence on efficiency, emission, performance of the SI engine. Purpose of the investigation is measurement of piston transient temperature at several points on the piston, from cold start to steady condition and comparison with the results of finite element analysis. In this project the piston is modeled and assembled with the help of CATIA software and the component is meshed and analysis is done in ANSYS software and the thermal and static behavior is studied and the results are tabulated.
The various stresses acting on the piston under various loading conditions has been studied. In the preset thesis work has been taken up on the following aspects to cover the research gaps and to present the results based on the systematic studies :. One of the design criteria is the endeavor to reduce the structures weight and thus to reduce fuel consumption.
Engine piston is one of the most analyzed components among all automotive or other. Instead of bringing in quality control during the final inspection it helps to develop a process in which quality is there through the life cycle of the product.
But it required prototypes can be used to confirm rather predict performance and other characteristics. Interpretations of the results Download:. Continue Reading.To browse Academia. Skip to main content. Log In Sign Up. Taufeeque Hasan. Its purpose is to transfer force form expanding gas in the cylinder to the crank shaft via piston rod and a connecting rod. It is one of the most complex components of an automobile. In some engines the piston also acts as a valve by covering and uncovering ports in the cylinder wall.
The thermal stresses, mechanical stresses and couples thermo-mechanical stresses distribution and deformations are calculated. After that fatigue analysis was performed to investigate factor of safety and life of the piston assembly using ANSYS workbench software.
Aluminium-silicon composite is used as piston material. The stress analysis results also help to improve component design at the early stage and also help in reducing time required to manufacture the piston component and its cost.
Due to very large temperature difference between the piston crown and cooling galleries induces much thermal stresses in the piston. Besides the gas pressure, piston acceleration and piston skirt side force can develop cycle of mechanical stresses which are superimposed on the thermal stresses.
Due to this reason thermo-mechanical stresses are one of the main causes of the failure of the piston. In spite of all the improvements and advancements in the technologies there exists large number of defective or damaged pistons. Thermal and mechanical fatigue plays a prominent role in the designing of pistons. Large numbers of complex fatigue tests are carried out by piston manufacturers but this involves very high cost and time.
Thus finite element analysis is carried out for stresses, temperature gradient, and deformation and fatigue characteristics. In this paper, a detailed stress analysis of piston is done under various thermal and structural boundary conditions which are applied to the finite element model of the piston. Structural, thermal and coupled thermo-mechanical stresses and temperature gradient are obtained from the analysis.
Life and Factor of safety for the piston are obtained from fatigue analysis. Based on the results from the analysis practical guidelines can be provided for engine design in order to improve performance and efficiency. It is manufactured by special powder metallurgy route using a proprietary high energy mixing process which ensures excellent particle distribution and enhances mechanical properties. The various properties of the material are shown in table 1.
Some unimportant factors, such as spot fillet, bevel edge, oil hole are neglected in the model to simplify the analysis. The three kinds of the stress fields, named as thermal stress field, mechanical stress field, thermal and mechanical coupling stress field, can be obtained by the imposition of the boundary conditions and loads on the FEA model. Model of the piston is shown in figure 2. IV Mesh generation Finite element mesh is generated using parabolic tetrahedral elements elements.
The von- mises stress is checked for convergence. An automatic method is used to generate the mesh in the present work. The meshing of piston is shown in figure 3. Fig 2: Model of piston Fig 3: Meshing of piston V Boundary condition Thermal boundary condition In the thermal analysis for model in ANSYS, the convection boundary condition, as the surface load is inflicted on the outside surface.
The upper part of the piston is having very high temperature because of direct contact with the gas. So a temperature of degrees is provided to the upper surface of the piston. The thermal boundary conditions of the piston are shown in figure 4.Engineers use computational fluid dynamics CFD simulations to speed development and optimize diesel, spark-ignited, two-stroke, homogeneous charge compression ignition HCCI and dual-fuel reciprocating engines.
Join us in this multipart webinar series to understand how to evaluate and optimize engine performance using commercial CFD software, as well as technologies in the simulation ecosystem that support, augment and streamline CFD applications. ANSYS experts will present the webinars, sharing best practices and simulation strategies. View this on-demand webinar for an overview of combustion capabilities for internal combustion engine design, including:.
View on demand. View this on-demand webinar to learn how to configure a closed-cycle diesel engine sector simulation from scratch and analyze results using ANSYS EnSight. View this on-demand webinar to learn how to set up a full-cycle gasoline direct-injection engine simulation and analyze and visualize results using ANSYS EnSight. View this on-demand webinar to learn how to use ANSYS Chemkin-Pro engine models for concept-stage design, to evaluate and optimize powertrains for engine knock and understand how the ANSYS model fuel library improves combustion simulations.
View this on-demand webinar to learn how to define your fuel model for accurate fuel combustion and emissions predictions using the ANSYS model fuel library. This webinar is generally applicable to any combustion simulation where the preparation of accurate fuel models is a priority.
View this on-demand webinar to learn how to use reference frames to set up a multi-cylinder four-stroke engine simulation. The setup of a two-stroke engine with sliding interfaces between the piston and port openings will also be demonstrated.
Improving Internal Combustion IC Engine Design through Simulation Engineers use computational fluid dynamics CFD simulations to speed development and optimize diesel, spark-ignited, two-stroke, homogeneous charge compression ignition HCCI and dual-fuel reciprocating engines. Application of thermal and structural analyses of the engine block. Use of the command line interface for full scripting control and simulation component reuse.
Learn how to set up a closed-cycle diesel engine-sector simulation from scratch, including spray injection using ANSYS Forte. Learn how to set up a full-cycle gasoline direct-injection engine GDIincluding spark ignition and flame propagation models. Evaluate and optimize powertrains for engine knock. Understand how the detailed and validated reaction mechanisms in the ANSYS model fuel library improve combustion simulations.
Presenter: Karthik Puduppakkam View on demand Preparing a Fuel Model for Combustion Simulation View this on-demand webinar to learn how to define your fuel model for accurate fuel combustion and emissions predictions using the ANSYS model fuel library.
Define your fuel model to provide accurate fuel combustion and emissions predictions — considering soot particle size distribution tracking, spark-ignited flame propagation and engine knock and fuel effects — using the ANSYS model fuel library.Drag and drop Transient structural into project schematic.
In engineering data, select this material. Import the model in geometry. Edit the model to open mechanical model. In contacts, provide contact as follower to cam and follower to piston. Select both contact and assign contact type frictionless, frictional with 0.
Provide revolute joint to barrel and translational joint to piston to follower. In analysis setting, total number of steps are 9. Initial time step, minimum time step and maximum time step are 0. For the rest step initial time step, minimum time step and maximum time step are 0. Energy dissipation ratio is 0. In transient, provide joint rotation to cam with the angles in degree 0, 30 60 90 Materail is same but the contact type is different in all cases.
Contact type change from frictionless to frictional with 0. Average equivalent stress, strain and directional deformation is increasing with the increament of frictional value. When frictional cofficient will increase, then bond between follower bob and cam profile will increase.
To move or displace the follower will require higher force which led to increase in equivalent stress. Deformation will increase which led to increase in strain. AIM: To perform explicit dynamics simulation of a machining operation using planer and observe the equivalent stress, total deformation and temperature of workpiece at two different cutting velocity. AIM: To perform a parametric study to analyse a frontal impact car crash test by using 3 different values of thickness 0.
AIM: To perform explicit dynamics structural Analysis of a bullet penetrating into a bucket by selecting 3 different non linear materials for the bucket and find out the equivalent stress and total deformation in each cases. Model: Materials: The three dif Read more. AIM: To perform the tension and torsion test on the specimen and find out the total deformation, equivalent stress and temperature.
AIM: To perform a transient analysis on worm gear and find out the equivalent stress, equivalent strain and total deformation. Procedure: Drag transient structure Read more. AIM: To perform a transient structural analysis on a double universal joint with a spring using three different materials Structural Steel, Stainless Steel and Titanium alloy on the joint with the spring. AIM: To perform a static structural analysis of Sphere pressing on a plate and and find out the plastic deformation.
Procedure: In engi Read more. Procedure: This mode Read more. In Geometry, Assign stiffness behaviour as rigid to both piston and cam. In solution, add equivalent stress, equivalent strain and directional deformation to all body.
The End. Have an awesome project idea? Start working on it and share it with the world.February 7,Movement of piston in a cylinder with fluent? I'm starting to build a model of a piston say 45mm diameter, 20mm length in a sealed cylinder of air 50mm diameter mm length.
At the top of the cylinder there is a constant temperature of say degrees centigrade and at the bottom 25 degrees centigrade. As the piston moves downward, the air is forced to the top of the cylinder, heating up and as the piston moves back upward, the air moves back down to the bottom.
My question is, how would I start to go about modeling this in fluent? I've never modelled something with motion before and a tutorial would be great. The setup in my head would be Thanks in advance.
February 10, September 18, Rajendra Kumar. Originally Posted by Whitworth. Join Date: Mar March 3, I downloaded the file and tried to run the simulation.
Thanks in Advance. March 3,Fluent Access Violation error after a specific iteration number. Fluent Access Violation error after a specific iteration number. Thread Tools. BB code is On. Smilies are On. Trackbacks are Off. Pingbacks are On. Refbacks are On. Forum Rules. All times are GMT The time now is Add Thread to del. Recent Entries. Best Entries. Best Blogs. Search Blogs.Hi anyone pls help me out this. I currently on due time for my project.
Release: Release Number of machines requested : 1 Total number of cores available : 2 Number of physical cores available : 2 Number of processes requested : 1 Number of threads per process requested : 2 Total number of cores requested : 2 Shared Memory Parallel.
FINITE ELEMENT ANALYSIS OF PISTON IN ANSYS
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thermal analysis for piston
A piston is a component of reciprocating engines. Its purpose is to transfer force form expanding gas in the cylinder to the crank shaft via piston rod and a connecting rod. It is one of the most complex components of an automobile.
In some engines the piston also acts as a valve by covering and uncovering ports in the cylinder wall. Save to Library. Create Alert. Launch Research Feed. Share This Paper. Figures and Tables from this paper. Figures and Tables. Citations Publications citing this paper. References Publications referenced by this paper.