This tutorial demonstrates how to find deformation, stress, and energy absorbing
capacity of various structural components of a vehicle hitting a stationary or moving
object.
The component is crashworthy (safe), if it meets the plastic strain and energy
targets.
A bumper beam is one of the components that is used to protect passengers from front
and rear collision.
Bumper beam crash tests are necessary, for instance to calculate the energy
absorption of this component during a crash.Figure 1.
In this lesson you will learn to:
Step 1: Load the initial model
Step 2: Global de-penetration
Step 3: Define material and failure
Step 4: Define property
Step 5: Create spotwelds
Step 6: Mirroring model
Step 7: Set contact
Step 8: Create rigid body
Step 9: Create boundary condition
Step 10: Set loading (initial velocity)
Step 11: Create rigid wall
Step 12: Create accelerometer
Step 13: Define section
Step 14: 2nd de-penetration
Step 15: Define time history output
Step 16: Create engine setup
Step 17: Export solver deck and run the model
Step 18: Check results
Model Description
UNITS: Length (mm), Time (ms),
Mass (kg), Force (kN) and Stress (GPa)
Simulation time: [0 – 100.0]
Boundary Conditions: Gravity
load, initial velocity of -5.0 m/s of the bumper beam on the rigid wall
/INTER/TYPE2: for tied interface that connects a
set of secondary nodes to a main surface (connect coarse and fine meshes,
model spotwelds, rivets, and so on)
/INTER/TYPE7: Penalty contact between all versus
all
To run this simulation, you will need access to a licensed version of Radioss. You will need an internet connection to watch the
video tutorials and download the files.
Model Files
Before you begin, copy the file(s) used in this tutorial to your
working directory.