RD-HWX-T: 1030 Boat Ditching with Boundary Elements

The objective of this tutorial is to simulate Boat Ditching with Boundary Elements to represent continuous water using Multi-material law (LAW51).

Figure 1.
In this lesson you will learn to:
  • Step 1: Load the Radioss (Block) interface and load model
  • Step 2: Define material
  • Step 3: Define property
  • Step 4: Set contact
  • Step 5: Set rigid body
  • Step 6: Set loading
  • Step 7: Create boundary conditions
  • Step 8: Create Engine setup
  • Step 9: Export solver deck and run the model
  • Step 10: Check the results

Model Description

In this model, the top chamber is air, lower chamber is water surrounded by boundary elements. LAW51 is used for air, water and boundary. Boundary conditions are applied on each surface of boundary in the normal direction. An interface between fluid and boat (CEL) is defined to manage the contact.
  • UNITS: Length (mm), Time (ms), Mass (kg), Force (kN) and Stress (GPa)
  • Simulation time: Engine [0 – 30.01]
  • Fluid material (include water inlet and outlet) with /MAT/LAW51
  • Fluid Lagrangian contact with /INTER/TYPE18


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