Using LS-DYNA for Heat Transfer & Thermal-Stress Problems
Given by Art Shapiro of LSTC
Duration: 2 Days
Objective of the course:
This course objective is to provide an understanding of computational finite element heat transfer. Presentations 1-8 focus on the various heat transfer modelling issues one must understand in using LS-DYNA. This is followed by an introduction to thermal-stress and thermal-fluid problems. Workshop problems are used to illustrate the points made in the lectures.
Course content:
- Introduction Learn to create a KEYWORD input file to solve for the thermal expansion of an aluminium block
- Mathematical Theory brief, but cant be avoided.
- Time Step Control Learn how to select a time step size, use the variable time step option, and understand the difference between fully implicit and Crank Nicolson time integration methods.
- Boundary Conditions Learn how to define temperature, flux, convection, and radiation boundary conditions. Learn how to hand calculate a convection heat transfer coefficient.
- Nonlinear Problems Learn nonlinear heat transfer by solving a solid-liquid phase change problem.
- Equation Solvers Learn the advantages and disadvantages between the Gauss direct solvers & conjugate gradient iterative solvers in LS-DYNA.
- Thermal Contact Learn thermal contact modelling issues by solving a sheet metal forming problem with thin and thick shells.
- Miscellaneous Learn special applications including powders, welding, induction heating, and thermostat control.
- Thermal-stress coupling An introduction to coupled thermal stress modelling with upsetting, forging, extrusion, and sheet metal forming applications.
- ALE coupled thermal mechanics How to use ALE for very large deformation thermal stress problems.
- Thermal-fluid-coupling - An introduction to coupled thermal fluid modelling with casting applications.
[back to course list]
|
