Post on 24-May-2015
description
PREPARED BY:PREPARED BY:Vikas Patolia (07DME303)Vikas Patolia (07DME303)Vipul Patel (07DME306)Vipul Patel (07DME306)
What is CAE?What is CAE?
“It is the performance of engineering tasks or functions with the aid of a computer.”
It provides the means to cope with the demand for increased productivity of more sophisticated and reliable product design and manufacturing in today’s market.
The mechanical engineer will, have studied, used or been exposed to a variety of activities such as engineering drawing, design, manufacturing techniques and organizational planning and control.
There is a computer aided means for all these, and all fall into the definition of CAE.
Need ForNeed ForComputer Aided EngineeringComputer Aided Engineering
The need to develop computer-assisted techniques in engineering has arisen largely because of modern market demands.
People require goods of high quality and functionality and to meet this demand there is need for increased productivity in industry.
Areas of CAEAreas of CAE
EngineeriEngineering ng
Process Process
inspection
RapidPrototyping
ProcessSimulation
StressSimulation
FlowSimulation
3-D CADDesign
Production
PartApproval
Types Of CAETypes Of CAE
Thermal Analysis
Stress Analysis Flow Analysis
Dynamic Analysis
Computer Aided Engineering Computer Aided Engineering SoftwareSoftware
Design: AutoCAD, Pro/E, SolidWorks, … Electrical: Spice, E/Workbench, … Structural/vibrations: Adina, Marc, … Fluids: FIDAP, Fluent, … Manufacturing: Moldflow, ProcSim, … Thermal: Ansys, Cosmos, …
AdvantagesAdvantages
Less development timeLess time to marketHigher qualityHigher white collar productivityHigher reliabilityLess chances of failure
ApplicationApplication
Structural EngineeringAutomotive Driveline SimulationDesign Engineering Construction of 3D surfacesProgramming for NC-CNC machinesRedesigningVibration Analysis
How Analysis is done in CAE?How Analysis is done in CAE?
Analysis of scooter body DesignAnalysis of scooter body Design
Scooter Body DesignScooter Body Design
Design Decisions Shape Material Thickness
Performance: Strength? Weight? Cost?
Modeling StepsModeling Steps
Initial Body DesignInitial Body Design
Cross Sections of BodyCross Sections of Body
Finite Element MeshFinite Element Mesh
Finite elements decompose complex shapes into many features.
Mesh
Load and Boundary ConditionsLoad and Boundary Conditions
Load
Boundary
Conditions
Stress Results for Initial Design Stress Results for Initial Design
Max stress =23840
Allowed stress=5000
The stress of RED area is far above the allowed stress!!
Thickness=2.5 mm
RedesignRedesign
Max stress=8727
Allowed stress=5000
The stress of RED area is still above the allowed stress!
Thickness=5 mm
Redesign: Add BossesRedesign: Add Bosses
Bosses
Max stress = 4696
Allowed stress=5000
Final Design ResultsFinal Design Results
The MAX stress is below the allowed stress.
ReferencesReferences
Google.comWikipedia.comAlibaba.comBooks:
Computer aided engineering An introduction to CAE. Concurrent Engineering in product
design and development