Assignment 6-Frontal Crash Simulation Challenge

OBJECTIVE:

• To perform frontal crash analysis of a vehicle against a rigid wall in Hypermesh. . To simulate the crash behavior of the vehicle in HyperView and discuss the results.

• To plot the sectional and axial forces at different locations and discuss the results.

. To obtain intrusion results at dash wall and plot them in HyperGraph.

• To obtain acceleration and plot acceleration curve at B-Pillar.

CASE SETUP AND EXECUTION:

The given frontal crash vehicle model is as follows.

First, we will import the .rad starter file of the above model which is named as neon_front_0000.rad in Radioss using Import Solver Deck option. Then we will check the unit system which is followed in the model under BEGIN_CARD. So for this model, we will see that the unic system followed is [kg mm ms]. Now we will create all the required things for a frontal crash.

Penetration Check

To check for penetrations in the model, we will go to Tools menu on Menu bar and click on Penetration Check option, in Penetration check panel, we will select all the components and click on Check command. The software will check for penetrations and then display the results as shown below.

Interface -

For this model, we will create Type 7 interface for all the components of the model as it is self-impacting or the nodes and elements of the model will have a contact between them. We will go to Solver browser and we will delete all the existing interfaces. Then we will night click and navigate to Create> INTER TYPE 7. Under Type 7 interface card, we will select all the components for slave nodes and master surface in Grnod_id(S) and Surf_id(M) respectively. Then we will define all the recommended parameters for Type 7 interface e Istf-4, igap-2 Idel - 2, Fscale_gap - 0.8, Stmin-1 kN, Fric - 0.2. Gapmin - 0.5, Iform - 2. Here we will define Inacti as O which is default because there afe no penetrations in the model.