Calculating the Stretch Ratio by comparing the ELFORM (-2,-1,1,2) with Ogden_Material Model in LS-DYNA

Aim: 1) To create the simulation of bird strike on the Aero Engine from the given FE model. 2) Following are the information and conditions required to model the phenomenon 3) The blades should rotate at a constant velocity but the casing should remain stationary. 4) The cylindrical bird model should travel along its own…

Aim: To demonstrate spherical, revolute, cylindrical, and translational joints between two rigid bodies and two deformable bodies.    Theory: A distinguishing feature of multibody systems is the presence of joints that impose constraints on the relative motion of the various bodies of the system. Most joints…

Aim: 1) To calculate the Mooney Rivlin and Ogden material constants and compare both using stress-strain data from a Dogbone specimen tensile test with 100 per cent strain. 2) The given material data is the engineering stress-strain in MPa/(mm/mm). 3) The comparison should be shown from the d3hsp file and using simulation.…

Aim: 1) Using the diagram of the true stress-strain curve given for graphite iron casting, creating a material model for the Dogbone specimen.  2) Validating the material model by performing a tensile test on a Dogbone specimen.   Theory: A stress-strain curve for the graphite iron casting is given in the problem…

Aim: 1) To learn about the mass scaling Technique to reduce the computational time for the analysis. The limit for the mass scaling is restricted to 8% and simulation has to be completely stable. 3) Finally, we have to run the same model using an implicit solver with necessary changes and compare implicit and…

Aim: To perform the Head Impact Simulation and calculate the Head Impact Criterion (HIC) value for the following cases. 1) Simple head model impacting against a rigid wall (Case-1). 2) Child headform dummy model impacting against a rigid wall (Case-2). 3) Child headform dummy model impacting against the hood (Case-3).…

 Aim: 1) To Create a block of 10mmx10mmx10mm dimension with 10 elements for each direction and use the material card attached (Ogden_Material.k). 2) Use appropriate boundary conditions to simulate uniaxial tensile behavior for the model. 3) Compare the results of the simulation with ELFORM = 1, 2, -1, -2 by plotting…

Aim: To model the spot-weld for the given assembly parts using beam and solid elements separately. 2) To perform the crash analysis for the same and compare the output results of the beam and solid spot-welds.   Procedure: Importing the Model: 1) We first open the LS Prepost software and import the keyword file…

Aim: that crashes onto the rigid wall. 2) To maintain the gm-mm-ms unit system and provide an initial velocity of 50 kmph to the crash box. 3) To get the output contour animation and other plots upon running the simulation.   Procedure: Importing the Model: 1) We first open the LS Prepost software and import…

Aim: 1) To perform the Drop Test Simulation of Mobile Phone on the Floor by setting up the model. 2) To provide initial velocity to the mobile so that, it goes and hits the rigid floor at a certain velocity. 3) To get the output contour animation and other plots upon running the simulation.   Procedure: Importing…

Aim: 1) Extracting the Mid-Surface and Meshing the given Back Wheel Floor Panel model using hypermesh according to the given quality criteria. S.No 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…

Aim: 1) To mesh the given automobile side door interior plastic component in hypermesh with the quality criteria given below. S.No 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…

Aim: To Perform Batch-meshing on the hood and fender components with the given criteria and assign the non-linear material property Steel to them. Quality Criteria:- 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…

Aim: Meshing and Creating connectors in various parts of the given model using Hypermesh as per the specifications given below: 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…

Aim: 1) To take mid surface for the given component. 2) To mesh the mid surfaced components. 3) To create 1D elements with the given crossections and DOF. a. Rod element:- with only translational DOF and RBE2 link Cross-Section: BOX- Dimension a= 12 mm                  …

Aim: 1) To perform geometry cleanup for the given backdoor model. 2) To perform manual mid-surfacing for all the components in the backdoor model. 3) To mesh the backdoor geometry of a car according to the quality parameters given below. S.No Quality Criteria  Value  1 Aspect Ratio  5 2 Skewness 45…

Aim: 1) To check the geometry for the given model. 2) To extract all the mid surfaces of the given component. 3) To mesh all components in the model using the following quality criteria and finally giving thickness to the component. S.No Quality Criteria  Value  1 Aspect Ratio  5 2 Skewness 45 3 Warping…

Aim: 1) To write a code for Data Analysis using python. 2) Script should take column numbers as the input and plot the respective columns as separate images, each file should be saved by the name of the column and the plot labels should be extracted from the file. 3) Code should exit gracefully, if a non-compatible file…

Aim: 1) Definition of popt and pcov in the curve fitting code in python. 2) Significance of np.array(temperature) in the curve fitting code in python. 3) Definition of * in *popt in the curve fitting code in python. 4) Writing a code to fit a linear and cubic polynomial for the given Cp data and…

Objective: 1) Writing a python script to solve for the minimum value of pressure using the newton raphson method. where p denotes the cushion pressure, h the thickness of the ice field, r the size of the air cushion, σ the tensile strength of the ice and β is related to the width of the ice wedge. Take β…

OBJECTIVE: 1) To simulate the Air Standard Cycle or the Otto Cycle using Python. 2) To plot the P-V Diagram for it. 3) To find out the thermal efficiency of the cycle.   THEORY: OTTO CYCLE: The Otto cycle was developed by German engineer Nikolaus Otto in 1876. This cycle is very similar to the Diesel cycle,…

Objective: 1) To simulate the transient behaviour of a simple pendulum using second order ODE's using python. 2) To plot displacement and velocity graph. 3) To create an animation of pendulum motion.   Theory: ORDINARY DIFFERENTIAL EQUATION: An ordinary differential equation (ODE) is a differential…

OBJECTIVE: 1) To simlulate the forward kinematics of a 2R Robotic Arm using Python. 2) To capture the animation of it.   INTRODUCTION: KINEMATICS:It is a branch of mechanincs in which the motion of a body is considered without any forces that causes the motion.   ROBOTIC ARM:A Robotic Arm is a mechanical type…

Aim: 1. To perform roof crash analysis on neon dodge BIW model by setting up the following parameters. 1) To import both BIW and FMVSS Impactor in Radioss. 2) To give the following the transformations to bring the impactor at the desired location: • A 180° rotation about the global z-axis• A 5° rotation…

Aim: 1. To perform side crash for Dodge Neon BIW model by setting it with the following parameters: 1) Checking the  unit system and either following [Mg mm s] or [Kg mm ms] unit systems. 2) Creating appropriate contact interface (Type 7), with friction=0.2 and also inputting other recommended parameters.…

Aim: 1. To perform Frontal Crash for Neon car BIW Model by initially setting up with the following parameters: 1) Checking the unit system and following either of these unit systems[Mg mm s] or [Kg mm ms]. 2) Creating appropriate Type 7 interface, inputting value of friction=0.2 and also inputting other recommended…

Aim: 1) Simulating different cases for contact interface. The cases are as follows; 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…

Aim: 1) To run the seven cases as mentioned in the below image. The seventh case is running the model with LAW 36. 2) Plotting all the necessary contour and 2D plots energy plots for all the cases. 3) Tabulating the results obtained from simulating each case. 4) Comparing the results with each other and finally stating which…

Aim: The main aim of Assignment-3 is to make a comparison of results with base simulation and improved shell element properties,and To perform the various challenges which are listed below. 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…

Aim: 1) To check for the geometrical errors and clean the geometry for the given assembly. 2) To perform 2-D mesh throughout the assemby with the given element Quality criteria below. S.No  Quality Criteria  Value  1 Target/Average length   5 2 Minimum Length  3 3 Maximum Length  7 4…

Aim: 1) To check for the geometrical errors and clean the geometry for the given assembly. 2) To perform surface and volume mesh(Tetra Mesh) throughout the assemby with the given element Quality criteria below. Quality Criteria for Tria Elements (Tyre and Rim):  S.No  Quality Criteria  Value  1 Target/Average…

Aim: 1) To check the geometric errors and rectify them for the given CAD Model. 2) To take the Mid Surface and Mesh the component according to the given quality criteria below. S.No  Quality Criteria  Value  1 Target/Average length   4 2 Minimum Length  2 3 Maximum Length  6 4 Aspect …

Aim: 1) To check and correct the geometrical errors of the given model. 2) To take Mid Surface of by the Skin Method and Casting method. 3) To mesh using the manual, batch and casting methods given in the question. Also using the following quality criteria. S.No  Quality Criteria  Value  1 Target/Average…

Aim: 1) To provide connections for the rear door model. 2) Explain about the different connections given for the model.   Theory: The model given to us is the rear door model. The model also has the glass window which is in closed position for obtaining better results after running a simulation for the model in NASTRAN…

Aim: 1) To clean up the given CAD geometry. 2) To perform 2-D meshing over the given CAD geometry and eliminate errors over meshing if any using given Quality Criteria. S.No Quality Criteria Value 1 Target/Average length 1 2 Minimum Length  0.5 3 Maximum Length  2 4 Tetcolapse  0.2   3) To perform volume…

Aim: 1) To check the geometry for the given model. 2) To extract all the mid surfaces of the given component. 3) To mesh all components in the model using the following quality criteria and finally giving thickness to the component. S.No  Quality Criteria  Value  1 Target/Average length   5 2 Minimum…

Aim: To carry out a system-level simulation of a BAJA all-terrain vehicle and preparing a technical report explaining the model properties & comments on the results.   Theory: ATV: An all-terrain vehicle (ATV), also known as a quad (bike), three-wheeler, four-track, four-wheeler,…

Aim: 1) Implementing control logic of a “washing machine” using Stateflow as per given sequence:  If the power supply is available, the system gets activated  If the Water supply is not available, stop the process & indicate through LED Soaking time should be 200s followed by Washing time of 100s.…

Aim: 1) Making a Simulink model of Doorbell using solenoid block and Creating a situation where the switch is closed for 2 seconds and then released. Observe the physical movement of the plunger.  2) Using a thermistor to sense the temperature of a heater & turn on or turn off the fan. Temperature source: 20 °C…

OBJECTIVE: 1) Creating a Rankine Cycle Simulator using MATLAB 2) Calculating the state points of the Rankine Cycle based on user inputs. 3) Plotting the corresponding T-s and h-s plots for the given set of inputs. 4) Also calculating Net work output and Back work ratio.   THEORY: Rankine Cycle: It is a model which…

OBJECTIVE: 1) Writing a function that extracts the 14 co-efficients and calculating the enthalpy, entropy and specific heats for all the species in the data file. 2) Calculating the molecular weight of each species and displaying it in the command window. 3) Plotting the Specific Heat (Cp), Enthalpy (H) and Entropy…

OBJECTIVE: To optimize the Stalagmite Function and find the global maxima of the function using the Genetic Algorithm in MATLAB.   THEORY: GLOBAL OPTIMIZATION: Global optimization is a branch of applied mathematics and numerical analysis that attempts to find the global minima…

OBJECTIVE: The objective of this project is to code to fit a linear and cubic polynomial for the Cp data, Plot the linear and cubic fit curves along with the raw data points and explain the parameters used to measure the fitness characteristics for both the curves. THEORY: CURVE FITTING: Curve fitting is…

OBJECTIVE: To simulate the transient behaviour of a simple pendulum using second order ODE's and to create an animation of it's motion using MATLAB software.   THEORY: ORDINARY DIFFERENTIAL EQUATION: An ordinary differential equation (ODE) is a differential equation containing one or more functions…

OBJECTIVE: The objective of this project is to simulate a P-V diagram of Air Standard Cycle or Otto Cycle and finding the thermal efficiency of the engine using MATLAB.   THEORY: OTTO CYCLE: The Otto cycle was developed by German engineer Nikolaus Otto in 1876. This cycle is very similar to the Diesel…

OBJECTIVE: To simlulate the forward kinematics of a 2R Robotic Arm using MATLAB.   INTRODUCTION: KINEMATICS:It is a branch of mechanincs in which the motion of a body is considered without any forces that causes the motion.   ROBOTIC ARM:A Robotic Arm is a mechanical type of an arm which is usually programmable…