Week - 2 - Explicit and Implicit Analysis

AIMUsing the LS DYNA manual (*CONSTRAINED_JOINT keyword) demonstrate spherical, revolute, cylindrical, and translational joints between two rigid bodies and two deformable bodies. A Mechanical joint is a section of a machine that is used to connect one or more mechanical parts to another. Mechanical joints may be temporary…

AIM: The mat77h hyperelastic material rubber taken as a specimen material.calculate the Mooney Rivlin and Ogden material constants and compare the both using stress-strain data from a Dogbone specimen tensile test. CASE SETUP CARDS: • BOUNDARY CONDITION • CONTROL CARDS • DATABASE • CURVE • MATERIAL • SECTION • SET   BOUNDARY…

AIM: To do a pre-processing on a given Intake Manifold component model using ANSA. OBJECTIVE: ● To check the geometrical error on the Intake Manifold model ● To generate 2D mesh on the components based on the quality criteria given ● To generate volume mesh on the component using tetra elements PROCEDURE: IMPORTING THE…

Objective: To mesh the given rearview mirror component in both 2L, and SD, after checking the model for geometrical errors and fixing them. Also, to ensure the generated mesh follows the given quality criteria. QUALITY CRITERIA: Shell Elements   S.No Quality Criteria Value 1 Target / Average length 1 2 Minimum Length…

MATERIAL MODELING FROM RAW DATA USING LS-DYNA AIM: To create a material model using the data extracted from the given true stress-strain curve of graphite iron casting and validate it using the dogbone specimen. Note: The unit system used is kg-mm-ms. PROCEDURE: 1. Data Extraction: The given image file of true stress-strain…

AIM: i. To reduce the runtime required to run the analysis of the given model using mass scaling technique and stability has to be completely intact. ii. To plot a histogram to compare the runtime with mass scaling trials. iii. To optimize both the DT and TSSFAC parameters. iv. To run the same model using implicit solver…

PEDESTRAIN HEAD IMPACT SIMULATION USING LS-DYNA AIM: To perform the Head Impact Simulation and calculate the Head Impact Criterion (HIC) value for the following cases. i. Simple head model impacting against rigid wall ii. Child headform dummy model impacting against rigid wall iii. Child headform dummy model impacting…

CALCULATING THE STRETCH RATIO AND COMPARING THE ELFORM-2,-1,1,2) WITH OGDEN MATERIAL MODEL USING LS-DYNA AIM: i. To Create a block of 10 mmx10mmx10mm dimension with 10 elements for eachdirection and use the material card attached (Ogden_Material.k). ii. To Use appropriate boundary conditions to simulate uniaxial tensile…

SPOTWELD MODELLING IN LS-DYNA OBJECTIVES:       To perform the crash analysis for beam and solid element spotwelded models and compare the results for the outputs. PROCEDURE:1. Import the spotweld.k file into LS-dyna prepost. The spotwelds can be modelled as beams and solid elements using LS-Dyna. a. Beam element with…

OBJECTIVES: To simulate the crash box(1.2 and 1.5mm thick) onto a rigid wall at 50kmph and obtain the following output. Deliverables: Input.k file and output files (d3plot, glstat, sleout, rcforc) Animation of the final simulation Cross-sectional force generated in the middle of the crashbox (along its length) Acceleration…

  Objectives:  To perform a drop test in Is dyna by using the given model.    Procedure:  Open the file in Is dyna File>Open>k.file>ok.                 Model of cellphone and ground   As we know in LS-DYNA every entities are created by the KEYWORDS,So…

EXPLICIT AND IMPLICIT ANALYSIS   F(u) = u3+9u2+4u ---(1) solve using both Explicit and Implicit Methods (have a tolerence of 10-2). Stiffness, k(U) = dF/du = 3u^2+18u+4 ---(2) EXPLIIT ANALYSIS: In explicit mostly dynamic analysis, nodal accelerations are solved directly (not iteratively) as the inverse of the diagonal…

The file is  attached below

OBJECTIVE: To perform suitable connections between various parts/components in the rear door FE model provided, after creating and applying different PIDs to the aforementioned components that are part of the model. CAD MODEL IMAGE   PROCEDURE: 1. Firstly, in order to set up the more complex connections for the challenge,…

OBJECTIVE : ● Import the CAD geometry of door inner panel ● Clean up the geometry until no topological error is found ● Extract Mid-Surface for the geometry ● Meshing according to given quality criteria ● Improving mesh flow without any quality issues   Quality Criteria Used:   PROCEDURE: 1. Import Geometry ●…

OBJECTIVES: Target Element Length = 4mm Sl.No  Quality Criteria  Value 1 Aspect Rabe 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 angle Tria 20 10 Max angle Tria 120 11 Tria % 1O   PROCEDURE: ● Import the side door geometry into…

OBJECTIVE: Creating the various connectors from 1D, 2D or 3D as suitable connectors such as spot, bold, seam. and area respectively and attach the various parts with these connectors. PROCEDURE: The model frame assembly has 9 parts such as front truss1, front truss 2, right plate, right rail 1, right rail 2, left rail…

AIM: To perform 3D tetra mesh on the given models. Objective:  To create a tetra mesh for the given component To do the solid mesh cleanup. Perform the different solid mesh techniques to remove the errors. Procedure : Model 1(Housing) ● Housing model: - As per the necessity the mode has got to mesh. Before mesh pure…

I have attached the Pdf file and Ansa along with this

I have Attached the Document    PFA,    

I have attached both PDF file and hm file     PFA,

AIM: CREATE A MESH AND CLEAR ALL QUALITY ERRORS FOR THE GIVEN MODEL PROCEDURE: • Import file to hyperwork • Delete sold surfaces • Geometry cleanup • Midsurface extraction • Delete symmetry surfaces • Defeaturing • Assign quality criteria • Meshing • Quality error's deanup IMPORT…

AIM : to form ID components on the subsequent part with given cross-sectional and DOF.    OBJECTIVE :  a.Rod element:- with solely translational  DOF and RBE2 link  Cross-Section: BOX- Dimension a= twelve millimeter  dimension b=10 mm Thickness t= zero.75 mm    b. Beam element:-…