RD-HWX-T: 1060 Three Point Bending Model Setup

This tutorial demonstrates how to set up a 3-point bending model consisting of a head profile and a closing plate.

This validation test is a common test to determine the bending strength during bending load. The usage of the head profile structures is a common design feature in automotive and aero industry.

Figure 1.
In this lesson you will learn to:
  • Step 1: Import Solverdeck
  • Step 2: Check /BEGIN card
  • Step 3: Define material
  • Step 4: Assign material
  • Step 5: Define property
  • Step 6: Assign property
  • Step 7: Create solid spotweld
  • Step 8: Define failure /FAIL/CONNECT
  • Step 9: Define rigid body
  • Step 10: Create boundary condition
  • Step 11: Create imposed velocity
  • Step 12: Set contact
  • Step 13: Define output (time history / anim)
  • Step 14: Create Engine setup and export the model
  • Step 15: Run the model and check the results in HyperView and HyperGraph

Model Description

The model set up consists of:
  • Material creation (with strain curve creation) and assignment:
    • Elasto-plastic material /MAT/LAW36 (plastic):
      • [Rho_I] Initial density = 7.85e-09 (ton/mm3)
      • [nu] Poisson’s ratio = 0.29
      • [E] Young’s modulus = 210000 (Mpa)
  • UNITS: Length (mm), Time (s), Mass (t)
  • Simulation time: [0 – 7.01E-02]
  • Boundary Conditions: The supports are all fixed. An imposed velocity of 1000.0 mm/s is applied on the impactor.
  • Model size: 370mm x 46.5mm x 159mm


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.

Tutorial Video