RD-HM-T: 1030 Boat Ditching with Boundary Elements
Tutorial Level: Beginner The objective of this tutorial is to simulate Boat Ditching with Boundary Elements to represent continuous water using Multi-material law (LAW51).

In this lesson you will learn to:
- Step 1: Load the load the initial model
- Step 2: Define material
- Step 3: Define property
- Step 4: Set contact
- Step 5: Create rigid body
- Step 6: Set loading
- Step 7: Create boundary conditions
- Step 8: Create Engine setup
- Step 9: Export solver deck and run 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
Prerequisites
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.