Week - 2 - Explicit and Implicit Analysis

                                                                             Side Pole Crash Simulation Aim: To run a simulation for the neon slide pple crash and to obtain the results in the post processing. Objective: To check the unit system in the solver. To create an appropriate interface with friction 0.2 and recommended…

Objective:- To perform frontal crash analysis in the neon model with the recommended parameters and output requests. Frontal crash-BIW 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 penetrations and intersection. Correct…

AIM:         To study the RADIOSS Interfaces and the effect of notches using Hypermesh, Hyperview and Hypergraph 2D. OBJECTIVES : To create mesh for bumper assembly, mesh element size is 6mm. To apply and study the different cases for the crash tube model. To study the effect of notches on the crash…

AIM: To run crash analysis on the given model by applying different materials laws available in Radioss and post-process the results. OBJECTIVE: To carry out simulations of the given starter files and compare the results. There shall be 7 cases (according to given parameters) and they are to be compared primarily via animations…

Recommended properties: Parameters    Comment  Ishell =24   QEPH 4 nodes shells are best combination of cost and accuracy. Ismstr=2   Full geometric nonlinearities (default)with possible small strain formulation activation in RADIOSS Engine. Ish3n=2   Standard 3 noded shell…

Questions: 1. Check the material properties of the rail component and calculate the speed of sound in steel rail=_______ 2. The length of the rail is about 1000 mm.calculate the time takes for a shock wave to travel from one end of the rail to the other. 3.Time for sound to travel length of rail=______ 4.Edit…

AIM : To extract the mid surface and perform the geometry clean up on the given components. To generate a 2D mesh on the given components by following the element qaulity criteria. To assign the thickness for the given component. PROCEDURE :  Component 1:-       Initially, the given component is imported…

AIM:  To simulate a non-linear transient dynamic problem of a Bird Strike with a Jet Engine Blade and evaluate the results. OBJECTIVES: The given file contains all the 4 parts which as to separate and save part wise. The suitable material is to be created and saved in a subfolder. The node number, Element…

AIM:   To create the different kinds of joints like the spherical, revolute, cylindrical, and translational joints.To use *CONSTRAINED_EXTRA_NODES and *CONSTRAINED_NODAL_RIGID_BODY to create joints between rigid and deformable bodies respectively.  MECHANICAL JOINTS: 1) Revolute joint -  A…

AIM:    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. Theory: Hyper elastic materials are the material which has the capability to stretch with more than 100 % strain without…

AIM:   Using the given true stress-strain curve of graphite iron casting and creating MAT_024 material model and then validating it.  The given curve: The given true stress strain curve data is digitized for curve 1 and confirming it matches with the given curve. strain % stress (ksi) 0 0 0.00988471 2.28227 0.0308506 6.74283…

AIM:   To Create a Head Impact simulation using the child head sample and the car hood model. Impact with rigid wall Impact with car hood   CASES: CASE1: Simple head with rigid wall. CASE2: Head form 35 degrees with rigid wall. CASE3: Head form  35 degrees with hood. (1.5 mm thickness) PROCEDURE: CASE1: Simple head with…

AIM:     To introduce mass scaling Technique to reduce the run time for the analysis and the limit for the mass scaling is restricted to 8% and simulation as to be completely stable. By optimizing the TSSFC and DT2MS parameters the simulation is analyzed. INTRODUCTION: Timestep Significance: In the simplest case (small,…

AIM:   To Create a Head Impact simulation using the child head sample and the car hood model. Impact with rigid wall Impact with car hood   CASES: CASE1: Simple head with rigid wall. CASE2: Head form 35 degrees with rigid wall. CASE3: Head form  35 degrees with hood. (1.5 mm thickness) PROCEDURE: CASE1: Simple head with…

AIM:   Create a 10x10x10mm solid mesh and run a pure tensile run on it with stretch ratio of 5. Compare different element formulations of solids 1,-1,2,-2 and plot engineering stress vs stretch values. The given is a Ogden material card which is hyperelastic (rubber). EXPLANATION: Element formulations used are…

AIM: To create spotweld connections for the given model using the beam amd hexa element in the LS-Dyna. PROCEDURE: 1.Import the given model to the ls-dyna which is in the keyword format and it is meshed.   2. create a rigidwall using the create entity option and selct the rigidwall planar and select the N1 and…

AIM:    To simulate the crash test for a crash box having a different thickness of 1.2 and 1.5 mm into the rigid wall at 50 kmph and to obtain the required output data given below. PROCEDURE: 1. Initially, open the new_crash_box.k file in the LS -prepost and the unit system followed here is gm-mm-ms. 2. Then…

AIM:     The objective of this assignment is not to get a correct simulation but to get a feel of creating an input deck from scratch and to prepare the drop test of the phone from scratch using just the finite element model of the mobile phone. PROCEDURE: The unit system follows mm,ms,Kg,KN .…

AIM:   To slove the equation  F(u) = u3+9u2+4u by using both explicit and implicit methods with the tolerence of 0.001. Explicit Analysis: In Explicit analysis mostly dynamic analysis and nodal accelerations are solved directly (not iteratively) as the inverse of the diagonal matrix times the net nodal…

  AIM:       Convert the given values in the required conversion factor units with detailed calculation. OBJECTIVES:      Different industries use different system of units as per their convenience. The units for the basic measurement quantities, mass distance and time - dictate how the…

OBJECTIVE :     To mesh the given component with following quality criteria and assign the thickness.   Target Element Length = 5 Units S.N Quality Criteria  Value  1 Aspect Ratio  5 2 Skewness 45 3 Warping 15 4 Taper      0.5 5 Min. Length 2 Units 6 Max. Length 8 Units 7 Min…

OBJECTIVE :        To mesh the given component for the given quality criteria and assign the thickness.   Target Element Length = 4 Units S.N Quality Criteria  Value  1 Aspect Ratio  5 2 Skewness 45 3 Warping 15 4 Taper      0.5 5 Min. Length 2 Units 6 Max. Length…

OBJECTIVE :       To create the mesh on the given model and create the connector and attachment of various components. Target Element size - 5 Units S.N Quality Criteria  Value  1 Aspect Ratio  5 2 Skewness 45 3 Warping 15 4 Taper      0.5 5 Min. Length 2 Units 6 Max.…

AIM :  To create the teramesh for the given components. Model 1: TetraMesh Generation Method: 2D to 3D Conversion Elements sizes: Min- 2 Units, Target- 5 Units, Max- 7 Units  Tet collapse: 0.15 Model 2: TetraMesh Generation Method: Quick Tetra Mesh/ Volume Tetra Mesh Target Element size: 3 Units. Tet Collapse: 0.15 Model…

OBJECTIVE:To generate seperate mid-surface and assign thickness for all the model component andmesh them under the quality criteria given below. Target Element Length = 5 Units S.N Quality Criteria  Value  1 Aspect Ratio  5 2 Skewness 45 3 Warping 15 4 Taper      0.5 5 Min. Length 2 Units 6 Max. Length 8 Units 7 Min angle…

Objective:      To create the mesh on the given model with size of 5 units and create 1D elements on thenfollowing component with give cross-section and DOF. a. Rod element:- Translational DOF should be Constrained with RBE2 link Cross-Section: BOX- Dimension a= 12 mm      …

Aim:    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.…

Aim:        To check for the geometrical errors and mesh with the given element Quality criteria. After meshing the component the thickness has to be assigned. Procedure: 1. Import the CAD model in ANSA. 2. Make topo and check for the geomentry error.   3. Clean up the geomentry error by automatic fix by ANSA or manual…

Aim:   To perform the morphing for the given models. morphing is the process of changing the design of the components. Procedure: Model 1 : 1. Import the cad model and check for geometry. 2. Switch to the Morphing module.  3. In the Boxes>New>Ortho>Geometry select the model or any…

Aim:          For the given Rear door FE model, Create and Apply different PIDs for different components. To generate the 1D connections in NASTRAN deck for diffrenet type of joint. Procedure: 1. Import the cad model in ANSA.      2. We have to set the different PID's for…

The given Intake Manifold component, check for the geometrical errors and mesh the Surfaces with the given 2D element Quality criterias and also use tetra elements to mesh the Volumes defined in the model and check for the below quality after Volume meshing. 2D Elements - Only check for Min length and Max length…

AIM: To check for the geometrical errors and mesh the Surfaces with the given 2D element Quality criteria for the given Rearview mirror component. Also use the component for tetra element to mesh the volumes defined in the model and check for the quality after Volume meshing. S.No  Quality Criteria  Value  1 Target/Average…

Due to some health issues i cant able to complete on time which is given to complete the project. 

Aim:               To check for the geometrical errors and take the mid surface by suitable mid surfacing techniques for the given Plastic Bottle Cap model and  Mesh the same with given element Quality criteria.   Procedure: Import the cad model…

      Aim:          To create a meshing of Hood check for the geometrical errors and mesh with the given element quality criteria. Procedure: Open the model in Ansa before assigning the quality check for geometry issues and fix them. After geometry check extract mid…