Ahmed Body Challenge

Aim : Your code should create a PV diagram  Your should output the thermal efficiency of the engine.   Solution :  The code for the PV diagram is as follows :   import math import matplotlib.pyplot as plt #inputs p1=101325 t1=500 gamma=1.4 t3=2300 #Geometric dimensions : bore=0.1 stroke=0.1 con_rod=0.15…

Aim :  The final submission must include the input file, animation, and a report. - Since this is a quite difficult and involved project, students are advised to log their debugging process and include it in the report. The log is a description of the solution process and challenges encountered along the way.  …

Aim : 1.Prepare a table which includes materials & chemical reactions occurring at the anode and cathode of LCO, LMO, NCA, NMC, LFP and LTO type of lithium ion cells.Give your detailed explanation on it 2.Compare the differences between each type of Li+ion batteries based on their characteristics   Solution :…

Aim : Given the material data below, calculate the Mooney Rivlin and Ogden material constants and compare the both using stress-strain data from a Dogbone specimen tensile test with 100 percent strain. The given data is the engineering stress-strain in MPa/(mm/mm). The comparison should be shown from the d3hsp file and…

Aim : Use the diagram of the true stress-strain curve of graphite iron casting. Two curves are there for different material structures. Students need to pick any one of them and use the data to create either a MAT_024 or MAT_018 material model and then validate it.  Solution :  It is very important to convert…

Aim :  Use mass scaling to reduce the runtime of a model and ensure the stability of mass scaling. The hard limit on mass scaling is 8% and stability should be completely intact.  To run the same model using implicit solver with necessary changes and compare implicit and explicit runtime.  Solution : We…

Aim : The report should contain the following, The impact simulation of a simple head impact with the Rigid wall. The impact simulation of the Headform provided with the Rigid wall with the Stress / Strain plots and acceleration plot. The impact simulation of the head form with the Hood with the Stress / Strain plots and…

Aim : Use the provided styling surface to come up with a back door design, use appropriate design methodologies, and provide the necessary reinforcements and embosses.   Solution : Now we will discuss about geometric dimensioning : The most common way of showcasing the dimensions of the part are the plus minus signs…

Aim : Use the Section from your Hood design and calculate the section modulus using the formula S = I/y S = Section Modulus I = Moment of Inertia y = distance between the neutral axis and the extreme end of the object  Come up with a new section that has improved the section modulus of the previous section and mention…

  Aim : Create a block of 10mmx10mmx10mm dimension with 10 elements for each direction and use the material card attached (Ogden_Material.k) that is representative of the material properties from the above figure. Use appropriate boundary conditions to simulate tensile behavior for the model and finally compare…

Aim : For the Given Roof styling, Develop the essential flanges and reinforcements, Provide appropriate dimensions and check for Draft analysis, and submit your Section Inertia report on the 0-Y section. Start with the creation of a roof ditch area the tool opening angle is only 3 degrees. Do a curvature study on the roof…

Aim : To model spotwelds for the given assembly of parts and run a crash test . Solution :  We have the following crash box as shown : Creation of spotwelds using beam elements : We will create spot welds using beam elements as shown below :       Assigning material to spotweld : We are using mat 100…

   Aim : To design fender according to automotive standards .   Solution irst we will be talking about fender in car : Fender is the American English term for the part of an automobile, motorcycle or other vehicle body that frames a wheel well (the fender underside). ... In British English, the…

Aim : In this assignment, the student needs to simulate a crash test for a crash box for which mesh is given. A crash box is a highly energy absorbing structure that crashes on application of loads and reduces impact on other components nearby. A full-fledges crashbox is a highly sophisticated design but in this case we…

Aim : To create a complete simulation file from this to perform a drop test.  Solution : First we will discuss the basics of ls dyna simulation : There are keywords defined for the following: Part : It tells us that the to which exact part it belongs to using a keyword  Mat : It defines the material properties…

Aim : 1.Design Hood outer panel, inner panel and the necessary reinforcements by following the Master section mentioned with the design parameter  2.Submit an assembly of Hood inner panel, outer panel, latch, hinge and the reinforcements. 3.A detailed report about the Hood Design which includes a detailed explanation…

Aim: As demonstrated in the PDF, F(u) = u3+9u2+4u use this equation and solve using both Explicit and Implicit Methods ( have a tolerence of 10-2. Deliverables : 1. Write a detailed report about Implicit and explicit methods. 2. Do the calculations in a spreadsheet, try to plot the graph and compare them (optional).…

Aim : For the given assembly, check for the geometrical errors and mesh with the given element Quality criteria. After meshing the component the thickness has to be assigned for mid surfaces. Use tetra elements to model non-uniform thickness components. Also use Appropriate connections to connect the component as suggested…

Aim: Write the given measurements in the above different system of units. Also, mention the conversion factors. Kg cm ms Kg cm s gm mm ms kg m s g cm s g cm us g mm s ton mm s slug ft s kg mm s g cm ms kg mm ms Sol :  We have been given the following inputs : MASS 1kgLENGTH 1mTIME 1sFORCE 1NSTRESS 1PaENERGY 1NmDENSITY…

Aim : For the given component, check for the geometrical errors and mesh with the given element Quality criteria. After meshing the component the thickness has to be assigned. Write a detailed report on your meshing process and also mention which method you used to extract the mid-surface along with the reason. S.No …

Aim :   1) Practice all the Morphing techniques that were shown in the video for Model-1.    2) Perform morphing for the Model-2 and Increase the Height of the Dog houses and Ribs. (Refer Red annotations in the below image to understand what are Dog houses and Ribs)  3)Write a report on Morphing of…

Question : Write one page about Underbody coating and its purposes. Sol: In Indian road conditions, a cars underbody is most prone to corrosion. Underbody coating provides long term protection from corrosion to car’s underbody. It also protects parts like internal body panels, frame rails and other inner cavities…

1. Benchmark with presently available cars in the market for the following case. Mr. D.S. Pughazhyendhii is a married man who lives in Bangalore which is a highly crowded city. His Family comprises five members including his wife, five-year-old boy, his father, and his mother. He visits his native place Madurai which…

Aim : To create 1d element on the rear door. Solution : First we will discuss about the various 1d element present : 1D Elements are simple connections between nodes.Standard 1D Elements are: 1.RBE2 : Rigid link to transfer motion from the Independent node to the dependant nodes. 2.RBE3 3.Beam / Bar : Others include :…

 Aim : Write a detailed report on Sheet Metal Component with good explanation on Sheet Metal modelling tools applied throughout the modelling. Also attach the Final model Images (Min. 4 images) of Sheet Metal Bracket.   Solution : First we will discuss about few terms : 1.Beads :  Drawbeads are…

Aim :   For the given Intake Manifold component, check for the geometrical errors and mesh the Surfaces with the given 2D element Quality criterias given below.  S.No  Quality Criteria  Value  1 Target/Average length   3 2 Minimum Length  1 3 Maximum Length  5 Use tetra elements…

Aim : Write a detailed report on Sheet Metal Component with good explanation on Sheet Metal modelling tools applied throughout the modelling. Also attach the Final model Images (Min. 4 images) of Sheet Metal Bracket. Solution : Now we will create the basic sketch as shown below : Using contour flange we get the…

Aim : Write a detailed report on Sheet Metal Component with good explanation on Sheet Metal modelling tools applied throughout the modelling. Also attach the Final model Images (Min. 4 images) of Sheet Metal Odd Shaped Enclosure Solution: In this we will convert solid body into sheet metal as shown below : Now…

Aim  : For the given component, check for the geometrical errors and mesh with the given element Quality criteria. Use tetra elements to model the component and there should not and kinks and dips on the surface of the component. Write a detailed report on your meshing process. S.No  Quality Criteria  Value  1 Target/Average…

Aim : Write a detailed report on Sheet Metal Component with good explanation on Sheet Metal modelling tools applied throughout the modelling. Also attach the Final model Images (Min. 4 images) of Sheet Metal Box Assembly.   Solution :   We have created tab and flange as shown below : Now we have created…

Aim : Write a detailed report on Sheet Metal Component with good explanation on Sheet Metal modelling tools applied throughout the modelling. Also attach the Final model Images (Min. 4 images) of Sheet Metal Casing.   Solution:  First we will define a few terms related to sheet metal : 1.Bend Radius:…

Aim : Creation of Door Arm rest and add thickness to it  . Solution: Creation of Tooling Axis : We have taken intersection of the surface as shown : Creation of B surface:   We have extracted two surfaces as shown below : We have trimmed it and later given fillet as shown below : Now to fill the small gap as…

Aim :   Creation of CAD model considering following inputs as like in OEM and tier1 companies a) Class A surface b) Nominal thickness : Refer master sections c) Attachment strategy :  Find a attachment strategy for the door panel complete work. Use Push pin with Dog house for Lower substrate – Door panel…

Aim : Development of Master Section of B Side Solution: Now we have created the tooling axis as shown below :   Using bisecting lines we have created the tooling axis as shown. Draft Analysis : As you can see few surfaces will need to be given additional draft . \ We have made flanges as shown below : We have trimmed these…

Aim : Create the Base Bracket Plastic component through the given Class-A surface.  Solution:   Tooling Axis Direction : We have decided to take a tooling direction which is perpendicular as shown below : Now we will create the class B surface as shown below : We will create the extract as shown below :  …

Aim: Create the boss and Dog House for the Centre console coin holder considering the design rules. Solution: General Guidelines for Bosses:   Draft  - 0.5 degrees on walls of boss   Thickness -  Typically 40%* of the nominal wall at the base.   Height to Diameter Ratio -  3:1…

Aim : Create the rib for the Centre console coin holder considering the design rules. Solution: Following is the design rule for the ribs : Following is the component is on which we will design the ribs: We have created a extrusion as shown below: We have thickned as shown below :   Now we will give 0.5 draft as …

Aim: Create the Core and cavity blocks for the switch bezel. Solution: We have used extrapolated the class a surface and trimmed it with class C surface to get the following : After this we trim this with the class c extension and get the following : Now we have created the parting surface and the core as shown below :…

Aim : Create the Switch Bezel Plastic component through the given Class-A surface. To begin with, the tooling axis for the given Class-A Surface should be created meeting the requirements of the draft angle and at the end perform the Draft analysis on the model.  Solution : We will create the surface of the following…

Aim : Create the Coin Holder Plastic component through the given Class-A surface.    Solution :       Draft Analysis : We will create the tooling axis of the following component : We have created the intersection curve as shown below : Since all the walls are at 90 degree we will create the tooling…

Aim :  To model Radar mast and assemble the Yacht using SolidWorks:   Solution : A yacht is a sail or power vessel used for pleasure, cruising, or racing. There is no standard definition, so the term applies to such vessels that have a cabin with amenities that accommodate overnight use.   The…

Aim : Create the Base Bracket Plastic component through the given Class-A surface. To begin with, the tooling axis for the given Class-A Surface should be created meeting the requirements of the draft angle and at the end perform the Draft analysis on the model.  Solution:   Selecting z axis as our tool axis…

 Aim : Create the tooling axis for the given Fan cover model meeting the requirements of the draft angle and perform the Draft analysis on the model. Solution :     Draft angles present one of the key aspects of designing plastic parts to for the injection molding process.  Draft angles or tapers on…

Aim : Write the Report on Assembly of Chopper Model.  Submit the rendered models and assembly file along with the Part files.  Upload a minimum of five screenshots/images of renders. (For eg:- Front View, Side View, Isometric View, Camera Setup View, and Top View)   Solution : The following parts were made…

Aim : Mesh the following components with following mesh criteria : S.No  Quality Criteria  Value  1 Target/Average length   4 2 Minimum Length  2 3 Maximum Length  6 4 Aspect  3 5 Warpage 15 6 Skewness 45 7 Jacobian  0.7 8 Minimum Quad Angle  45 9 Maximum Quad Angle …

Aim: Follow the below-mentioned quality criteria, mesh the component given below and assign thickness: Target Element Length = 5mm S.N Quality Criteria  Value  1 Aspect Ratio  5 2 Skewness 45 3 Warping 15 4 Taper      0.5 5 Min. Length 2mm 6 Max. Length 8mm 7 Min angle Quad 45 8 Max angle Quad 135 9 Min angle Tria 20 10…

Aim : Follow the Quality Criteria and mesh the following component and assign thickness: Target Element Length = 4mm S.N Quality Criteria  Value  1 Aspect Ratio  5 2 Skewness 45 3 Warping 15 4 Taper      0.5 5 Min. Length 2mm 6 Max. Length 6mm 7 Min angle Quad 45 8 Max angle Quad 135 9 Min…

Aim: For the given component, check for the geometrical errors and mesh with the given element Quality criteria. After meshing the component the thickness has to be assigned.  Write a detailed report on your meshing process and also mention which method you used to extract the mid-surface along with the reason.  …

Aim: Create connector and Attach the various parts of the given model  1. Right_Rail_2 & Front_truss_1:- Seam-Quad(angled+capped+L) 2. Left_Rail_2 & Front_truss_1:- Quad elements 3. Front_truss_2, Front_truss_1 & Right_Rail_1:- Spot weld with 3 Layers and 5…

Aim : For the given component, check for the geometrical errors and mesh with the given element Quality criteria. After meshing the component the thickness has to be assigned. Write a detailed report on your meshing process and also mention which method you used to extract the mid-surface along with the reason. S.No …

Aim : Create 3D mesh of the following components : Elements sizes: Min- 2mm, Target- 5mm,Max- 7mm  Tet collapse: 0.15 Component 2 : Model 2    Solution : Defeaturing : Since our minimum length is 2 mm we have to remove the areas which fall below 2 mm using the defeature command as shown below :   All…

Aim: Perform a combustion simulation on the combustor model and plot the variation of the mass fraction of the different species’ in the simulation using line probes at different locations of the combustor as shown in Fig. You need to plot for CO2, H2O, CH4, N2, O2, NOx emissions & Soot formation.   …

Aim: Follow the below-mentioned quality criteria, mesh the component given below and assign thickness: S.N Quality Criteria  Value  1 Aspect Ratio  5 2 Skewness 45 3 Warping 15 4 Taper      0.5 5 Min. Length 2mm 6 Max. Length 8mm 7 Min angle Quad 45 8 Max angle Quad 135 9 Min angle Tria 20…

Aim: Perform a parametric study on the gate valve simulation by setting the opening from 10 % to 80%.  Obtain the mass flow rates at the outlet for each design point. Calculate the flow coefficient and flow factor for each opening and plot the graph. Discuss the results of the mass flow rate and flow coefficient.…

Aim: To perform analysis on cyclone separator and calculate the separation efficiency and pressure drop.   To write a few words about any four empirical models used to calculate the cyclone separator efficiency.  To perform an analysis on a given cyclone separator model by varying the particle diameter from 1 μm to  5 μm and…

Aim : Create a MATLAB model of electric car which uses lithium ion battery and induction motor. Choose suitable blocks from Powertrain block set. Prepare a report about your model including following: 1. System level configurations        2. Model parameters        3. Results  …

Aim : Creat 1D elements on the following component with given cross-section and DOF a. Rod element:- with only translational DOF and RBE2 link Cross-Section: BOX- Dimension a= 12 mm                               dimension b=10 mm    …

Aim: 1.Perform a steady-state conjugate heat transfer analysis on a model of a graphics card.  Use appropriate materials of your choice for the simulation. Make sure to properly define the correct solid and fluid zones. 2.Run the simulation for best possible mesh with combination of coarse and refined mesh in different…

Aim :  Check unit system and either follow [Mg mm s] or [Kg mm ms]. Create appropriate interface ,friction 0.2 and recommended parameters. Make sure of no penetration and intersections. Create rigid wall with friction 0.1 as per referance model. Compare the model weight with the referance model and use added masses…

Aim: 1.Compare the model weight with the full scale 300k nodes model and use added masses to reach target weight 700kg while getting CG about the required range. 2.Make sure of no penetrations and intersection. 3.Use model checker to ensure good quality. 4.Create appropriate interface ,friction 0.2 and recommended parameters.…

Aim :  1.Search and list out the total weight of various types of aircrafts.  2.Differeniate between ground speed and air speed. 3.Find out why  it is not  recommended to use aircraft engine power to move it on the ground at Airport 4.Learn about take off power, tyre design, rolling resistance,…

Aim :  1.To  calculate the energy required for braking. 2.Make a MATLAB program which plots contour of given motor speed, torque and efficiency values. Attach the code as a .m file attach a screenshot of all the plots   Solution:  Regenerative Braking :  Moving vehicles have a lot of kinetic energy,…

Aim 1.To discuss  practical CFD models that have been based on the mathematical analysis of Rayleigh Taylor waves 2.Perform the Rayleigh Taylor instability simulation for 2 different mesh sizes with the base mesh being 0.5 mm. Observe the differences in the animation and explain the effect of mesh size on…

Aim Create the mesh for bumper assembly,mesh size should be 6mm.  Run the crash tube model as it is. Change the Inacti=6 and run. Create the type 11 contact and run. Remove both notches  and remove boundary condition on rigid body node then run. Create a new notch in the middle ,select the whole section and run.…

Aim: Give a brief description of why and where a CHT analysis is used. Maintain the y+ value according to the turbulence model and justify the results.  Calculate the wall/surface heat transfer coefficient on the internal solid surface & show the velocity & temperature contours in appropriate areas Verify…

Aim : 1.Describe Ahmed's body and its importance. 2.Explain the reason for the negative pressure in the wake region. 3.Explain the significance of the point of separation. Solution: We will be doing the CFD analysis of above component.   Ahmed Body :  The Ahmed body is a generic car body (a simplified vehicle…

Aim: Run MATLAB demo ‘Speed control of a DC motor using BJT H-bridge’. Modify the model such that armature current doesn’t shoot up when motor changes direction from forward to reverse. Solution: First we will be defining few terms: Transistor :  A transistor is a miniature electronic component that…

  Aim Simulate the flow with the steady and unsteady case and calculate the Strouhal Number for Re= 100.  Calculate the coefficient of drag and lift over a cylinder by setting the Reynolds number to 10, 100, 1000, 10000 & 100000. (Run with steady solver) Discuss the effect of Reynolds number on the coefficient…

Aim 1. To find  types of power converter circuits are employed in electric and hybrid electric vehicle.    2. To  EV steady state speed if duty cycle is 70%. Given: m=1000bkg, Cd =0.2, A=2 m2, C0=0.009, C1=1,                     ρ=1.1614…

Aim To compare johnson cook material material curve with platic material curve for a rupture plate and anlyze the results    Solution We will be discussing about the material models which are used to analyse the given components and find their failure models :     Elastic region : The elastic region is…

Aim 1. To set up steady-state simulations to compare the mixing effectiveness when hot inlet temperature is 360C & the Cold inlet is at 190C. 2. To use the k-epsilon and k-omega SST model for the first case and based on your judgment use the more suitable model for further cases. Giving the reason for choosing the…

Aim 1.Using the crash beam file from the previous assignment, change the run time to 55 ms. 2. Change the number of animation steps during simulation to a minimum of 25 and maximum of 60. 3. Run the base simulation without any modification to element properties. 4. At the end of the simulation, do the energy…

Aim  1.To check the material properties of the rail component and calculate the speed of sound in steel rail. 2.To calculate the time taken for shick wave to to travel from one end to the other end of the rail and time for the sound to travel length of rail. 3. Edit the engine file of steel rail component. 4.Set the…

Aim To carry out the geometry cleanup operation of the following files: 1.Practice  2.Clip Repair 3.Mounting Bracket   PART-1 OPERATION-CLEANING It is important do geometric cleaning of the part so that all the open edges and surfaces are filled or deleted so that a proper mid surface is created.The geometric…

    What is the need of optimization? Process optimization is the discipline of adjusting a process so as to optimize (make the best or most effective use of) some specified set of parameters without violating some constraint. The most common goals are minimizing cost and maximizing throughput and/or efficiency.…

AIM To write a parsing code which read the thermodynamic data from nasa.dat file and plot  specific heat,enthalpy and entropy vs temperature.   INTRODUCTION Data parsing refers to taking input from files and using that data to do mathematical operations which helps to intrepet the data for further consideration.…

SOLUTION OF ODE clear all close all clc b=0.05; g=9.81; l=1; m=0.1; %intial conditions thetha_0=[0,5]; % time points t_span=linspace(0,50,500); % solve ODE [t,results] =ode45(@(t,thetha) ode_func(t,thetha,b,g,l,m),t_span,thetha_0); plot(t,results(:,1)) hold on plot(t,results(:,2)) ylabel(\'plot\') xlabel(\'time\') ANIMATION…