Presentation on theme: "Presented By, Design and of Gear Control Box Base Plate Made of Polymer Analysis Composite Material through CAE 1.Kiran Thore 2. Vikas Patil 3.Vivek Kadu."— Presentation transcript:
Presented By, Design and of Gear Control Box Base Plate Made of Polymer Analysis Composite Material through CAE 1.Kiran Thore 2. Vikas Patil 3.Vivek Kadu
Outlines: Outlines: Introduction. Part Design. FEA Modeling. Quality Checks. Linear Analysis. Thermal Analysis. Results & Discussion. Conclusion.References.
Introduction: Composite Material: “material consisting of more than one macroscopic phase” “material consisting of more than one macroscopic phase” matrix, disperse phase, interface
Why Composites for Cars? Glass Fiber Composites can reduce weight by 20 -30% Data Base Design Methodologies Processing Technologies Material Crash Models Rapid Cure Technologies Joining Methods NDT Recycling Carbon Fiber Composites can reduce weight by 40-60% Weight Reduction = Fuel Economy & Emission Reductions
Largest Focus Areas - Polymeric-matrix composites processing - Aluminum sheet formation and fabrication - Aluminum and magnesium casting Missions: - Support development of cost-effective materials and materials manufacturing processes required to achieve successful commercial introduction of fuel- efficient, low-emission, terrestrial transportation vehicles. Automotive Light weighting Material:
Lightweight MaterialMaterial Replaced Mass Reduction (%) High Strength SteelMild Steel10 Aluminum (AI)Steel, Cast Iron40 - 60 MagnesiumSteel or Cast Iron60 - 75 MagnesiumAluminum25 - 35 Glass FRP CompositesSteel25 - 35 Graphite FRP CompositesSteel50 - 60 Al matrix CompositesSteel or Cast Iron50 - 65 TitaniumAlloy Steel40 - 55 Stainless SteelCarbon Steel20 - 45 Weight Savings and Costs for Automotive Light weighting Materials
Electrical PropertiesMetric Dielectric Constant5.80 Dielectric Strength12.8 kV/mm Dissipation Factor0.0170 Arc Resistance120 Sec. Thermal PropertiesMetric CTE, Linear 20ºC120 µm/m-ºC Thermal conductivity0.420W/m-K Deflection Temperature At 1.8Mpa >=250 ºC
Physical PropertiesMetric Density1.85 g/cc Linear Mold shrinkage0.00100 cm/cm Descriptive PropertiesMetric ColorBlack Natural Main FillerGlass Fiber Molding MethodCompression, Transfer
Methodology & Strategy of Analysis: Solid Modeling FEA Modeling + Quality Checks Applying Material Properties, Boundary Conditions & Analysis
FEA Modeling: Mesh details: 1.Hypermesh 8.0 platform is used for meshing. 2.FE model generated on mid surface of component. 3.Mixed elements (Quad & Tria) are used for meshing. 4.2D Shell elements are used (2D shells can be drawn as a line, 3D as an area.) 5.Average 4.0 mm & min 2.0 mm element size is considered. 6.Washer is created near holes. 7.Dense meshing near hole areas.
Quality Checks: Quality is checked on different parameters : warpage, aspect ratio, length; jacobian
1 < Aspect Ratio This is the ratio of max element edge length to minimum edge length. Ideal value = 1 (Acceptable is less than 5) Jacobean Check > Ideal Value = 1.0 (Acceptable more then 0.6) Jacobian is a scale factor arising because of transformation of co-ordinate system.
1 warpage Check Warp angle is out of plane angle. Ideal value = 0 0 (Acceptable is less than 10 0 ) Element length Average = 4.0mm Maximum= 6.00 mm Minimum = 2.00 mm
FREE EDGES CHECKING Any quad element having 4 free edges
Boundary Condition Details: Essential and Natural B.C. Boundary conditions (BCs) come in two basic flavors: essential and natural. Essential BCs directly affect DOFs. Natural BCs do not directly affect. 1. If a boundary condition involves one or more degrees of freedom in a direct way, it is essential. An example is a prescribed node displacement. 2.Otherwise it is natural.
Boundary Conditions in Structural Problems: Essential boundary conditions in mechanical problems involve displacements (but not strain-type displacement derivatives). Support Conditions Supports are used to restrain structures against relative rigid body motions. The resulting boundary conditions are often called motion constraints.
Linear Analysis: 1.Analysis is performed in optistruct 8.0, package of hyper-works. 2.Analysis has been carried out for different amount of loads such as 1 N, 2 N, 3 N, 4 N, 5 N & 10 N 3.Displacement of the component and von-mises stress is found out for different amount of loads
1 Thermal Analysis: 1.Thermal analysis is performed in optistruct 8.0. 2.Stability of the component for different amount of temperature is found out. Temperature Loading
100 ºC Temperature: Displacement Von Misces stress
125 ºC Temperature: Displacement Von Misces stress
135 ºC Temperature: Displacement Von Misces stress
150 ºC Temperature: Displacement Von Misces stress
175 ºC Temperature: Displacement Von Misces stress
Result & Discussion: Linear Static Analysis: 1.Up to 3n-4Nn of load Component is showing Stresses below than than the tensile strength at break of the used material. Thermal Analysis: 1.Used Material is having good thermal stability which it shows up to the 150 ºC Temperature 2.Displacement is Acceptable up to the range of 3-4mm. 3. Above the temperature of 150 ºC, Displacement is also increasing. Which is above the target displacement.
Conclusion Composite Materials are the highly preferred material now a days. Approach for weight reduction & High strength to weight ratio of material is considered. If referred steps can be molded with no fault then desire goal can be achieve. Further different more analysis like non-linear, impact can be performed for more accurate results.
References:- Modern plastics encyclopedia handbook, New York, McGraw-hill. Plastics processing handbook, Berins, Hanser Pub.. Processing of composite material, B.T. Astrom Handbook of Enineering material, Vol.-2 (composite), American society for materials. www.finitetoinfinite.com www.rogancorp.com www.moldmaster.comwww.moldmaster.com. www.ides.com