AHMED BODY

OBJECTIVE: The aim of the project is to 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. Hyperelastic Material: It is highly elastic material, in the sense that all deformations can be recovered. Some adhesives…

Aim: Using the raw data provided in the image to create a material model and run the tensile test to validate the result. Methods to Solve Engineering Problem: Basically we have three methods to solve any engineering problem. They are: Analytical: It is classical approach and give 100% accurate result. It gives a closed…

Aim : The aim of the project is to study the effect of mass scaling on explicit and implicit analysis to reduce the computational time. Mass Scaling: Anytime you add nonphysical mass to increase the timestep in a dynamicanalysis, you affect the results (think of F=m*a). Sometimes the effect is insignificant and in those…

Aim: The aim of the project is compare the different types of element formulation of the solid element by tensile test analysis and calculate the stretch value of the model using hyperelastic material. Hyperelastic Model: Hyperelastic materials are designed for modeling rubber or rubber-like materials in which the elastic…

Objective: Calculate thr HIC for the Simple head and child headform with the rigid wall and hood by using LS Dyna. Solver: Here I am using Explicit solver. Because crash is happening in a smaller interval duration and explicit give accurate result in non linear analysis compared to the implicit solver. What happens to…

1.Search and list out the total weight of various types of aircrafts: Aircraft plays a vital role in the field of engineering. We are using the aircraft for various purposes with slightly modifying the technology.   Three types of aircraft used. They are 1. Commercial Planes. 2. Private Planes. 3.Propeller Panes.…

Objective: Modelling the beam and solid spotweld for the plates and compare the result at different scenario. Spotweld criteria: When we create a weld, sometime it is difficult to tell the exact force required to break the weld might not get generated in the CAE analysis or maybe we already know where the weld fails so…

Objective: In this challenge we will run the crash box simulation for the different thickness and compare the result with the help of LS-Dyna. Crash Box:   The above figure shows the model provided from the support engineer for this analysis. The K file initially consists of elements, nodes and parts. Model Build…

OJECTIVE: Run a drop test simulation on a mobile phone by using LS dyna software and conclude the result. Military Standard 810G- drop test: Before run the simulation we need to know the practical or real life test to check the durability of the mobile phone by drop test. The important point here is to understand that…

Explicit Methods: When a direct computation of the dependent variables can be made in terms of known quantities, the computation is said to be explicit. The explicit method is fast and inexpensive computationally. However errors accumulate and the answer will diverge over time form the answer you are trying to model. Also…

Objective: To do a gearbox sloshing effect using with clearance and without clearance using water and oil. Preprocessing: Since we are using student version, there must be a mesh limit. So convert the 3d case into 2d cases.     Similarly we will do for the gear with increased clearance. Meshing: The above figure…

Unit Conversion:   SI Unit to gm/mm/ms: The basic conversion shown in the above table,   Mass: 1 Kg = 1000 gm Length 1m= 1000mm Time 1s= 1000 ms   Force 1 N= 1 kg m/s^2 = 1000 gm m/s^2 = 1000gm *1000 mm/(1000 ms)^2 = 1e6  gm mm/1e6 ms^2 = 1 gm mm/ms^2. Unit conversion- 1   Stress 1Pa= 1 N/m^2 =…

Objective: In this project compare the Nox effect of the omega and the open W Piston of the diesel engine by using the Converge Studio. Procedure: Here we are using the engine sector surface, with the bowl profile, we use that profile to make a piston by uding the Engine Sector surface.   The above show that, input…

OBJECTIVE: Run a PFI engine and study the effect of emission and the efficiency of the engine by using converge studio. PFI Engine: Multipoint fuel injection (MPI), also called port fuel injection (PFI), injects fuel into the intake ports just upstream of each cylinder\'s intake valve, rather than at a central point within…

Objective: In this challenge, we are going to run a Transient case of shock tube simulation by using the converge studio. Procedure:   The above figure shows the geometry which we used to run the simulation. Shock Tube: Whenever the high pressure region and low pressure region interact, there is disturbance happened…

Objective: In this challenge, running a Conjugate Heat Transfer analysis by using the Converge software and compare the result for the different grid. Conjugate Heat Transfer: CHT is used to describe process where the variation of temperature in both the fluid and the solid due to the thermal interaction between the solid…

Objective: In this challenge we are going to study about the Shock wave, and the boundary condition used in the shock wave. Shock Wave: A sharp change of pressure in a narrow region travelling through a medium especially air caused by explosion or by a body moving faster than the speed. It is mainly formed when the pressure…

OBJECTIVE: In this challenge, we are going to perform a flow over a throttle body on a transient condition. Procedure: Flow over a throttle body analysis very helpful to learn the mass flow rate and the loss when the throttle is open and closed. However this effect can be captured in the transient. Here we are using transient…

Objective: In this challenge, we are going to perform a flow over a throttle body on a steady state condition. Procedure: Flow over a throttle body analysis very helpful to learn the mass flow rate and the loss when the throttle is open and closed. However this effect can be captured in the transient. Here we are using…

Aim: Write a code that extracts 14 co efficient and calculate specific heat, enthalpy and entropy from the Nasa Thermodynamic data. Procedure: Here we use the file parsing technique to extract the coefficient from the thermo.dat file. 1. Using fopen to open the thermo.dat file and also the file must be in the same folder…

Objective: Write a code to optimize the stalagmite function and find maximum function(global maxima) by using the Genetic Algorithm. Genetic Algorithm: In matlab we use this function as ga. Genetic Algorithm is a method of solving both constrained and uncontrained optimization Problem which help to find the minimum function.…

CONJUGATE HEAT TRANSFER   This type of heat transfer corresponds to the combination of the heat transfer in solids and heat transfer in fluids. Heat transfer in solid called as conduction and heat transfer in fluid called convection.                  …

Ansa- The preprocessing tool which helps to reduce the topo error and used to do the meshing. Then we import in FEA software such as Ansys etc to do the simulation. Here we have the cylindrical model. I changed this model into the PID mode(particle Identity Mode). Geometry check is done to view any error in the model.…

The above model shown the geometry of the Pressure valve. Without any geometry check we see that there is a lot of single cons and missing faces which indicate as the error. For that, initially we do the topo error to reduce the error on the geometry for the meshing. For that use fill hole, Faces-new, surfaces-coons …

Aim:To check the mixing Tee efficiency of different shapes with different momentum ratio. Abstract:Mixing Tee is a device used in many chemical or mixing process and in application such as HVAC etc used for mxing of fresh and chilled air to get the required output.By using ansys fluent steady state simulation to find the…

                                           AHMED BODY CHALLENGE AHMED BODY:            …

Objective: Our objective is to convert the turbocharger model into the clean model ,optimized and meshed for CFD usages. Procedure: Turbocharger Model : The above diagram is a error model where we have to do the topology. We have to convert the single and triple cons to double cons. That glitching shows beacuse of faces…

CONJUGATE HEAT TRANSFER:                  This type of heat transfer corresponds to the combination of the heat transfer in solids and heat transfer in fluids. Heat transfer in solid called as conduction and heat transfer in fluid called convection.…

COMBUSTION:    Combustion or burning , is a high temperature exothermic redox(reduction and oxidation) chemical reaction between fuel and oxidant, usually atmospheric oxygen, that produced oxidized,often gaseous products in a mixture termed as smoke. TYPES OF COMBUSTION SIMULATION: BASED ON MIXING: NON-PRMIXED…

PROBLEM STATEMENT: Simulate the flow over a cylinder using steady and transient mode. PHYSICS BEHIND THE FLOW OVER A CYLINDER: VORTICITY:          It is defined as the measure of the rotationality of the fluid particle.In mathematically it is called a curl of velocity field.        …

1. The four empirical models used for cyclone separator efficiency are KOCH AND LICHT MODEL LAPPEL MODEL LI AND WANG MODEL IOZIA AND LEITH MODEL   IOZIA AND LEITH MODEL: Iozia and Leith logistic model is developed based on force balance. The model assumes that a particle carried by the vortex endures the influence…

Parametric simulation of gate valve. Gate valve: It is the component which used to adjust the fluid flow in the pipe. By increasing the gate disc in the gate valve the amount of mass flow rate is increased. Parametric option is used to obtain the mass flow rate or any parameter for different design point instead of simulating…

Rayleigh Taylor instability: From the Newtons law of viscosity, we know that even the fluid cannot resist the slightest shear force. Density is one of the main property of the fluid which the shear force can incorporate with it.   Depending upon the density we have lighter fluid like water etc and denser fluid like…

Objective: Write a Matlab Program to solve the second order ODE. Given: Here the given ODE is Second order ODE for the pendulum motion. The pendulum motion depends upon the Newton second law where it leads to forming the second order ODE. Equation: Conversion: let theta = theta1   displacement dtheta/dt=dtheta1/dt=theta2  …

Objective: Done a topological error and mesh on the hood for structural Analysis. Procedure: Structural anaysis and CFD analysis have a different way of meshing effect. Here we did a hood for the strcutural analysis. Hood: It consist of two parts inner panel and the outer panel. For doing a mesh, we are going to extract…

OBJECTIVE: Done a topological error on the model based on the external aerodynamic analysis and meshing the model with respect to the mesh quality criteria. Procedure: Quality Criteria:   The above dialog box is quality criteria. Basically when we start the model we have to specify in PID mode and enable the cons…

Objective: To write a Matlab Program to creat a PV diagram for the Otto Cycle. Otto Cycle: It is an air standard cycle. Because it works mostly on the source of air. This otto cycle is working on the SI engine and Diesel cycle is Working on the Diesel Engine   Process in Otto Cycle: Process 1-2 Isentropic compression…