Moving Heat Sources

This problem contains basic test cases for one or more Abaqus elements and features.

This page discusses:

Elements tested
Problem description
Results and discussion
Input files

Elements tested

DC3D8

Problem description

This section illustrates some of the options available for moving uniform heat sources in an additive manufacturing process. The simple model geometry and material properties were chosen to clearly depict the motion and orientation of the heat source as it moves through the model.

Model

The model is a 10 × 10 × 10 cube.

Mesh

A uniform 20 × 20 × 20 mesh of DC3D8 elements is used.

Material

All cubes have the same constant thermal properties. The low thermal conductivity was chosen to slow the diffusion of heat in the model so that it is easier to see the path of the heat source.


Conductivity	$k$ = 5.70496e-3
Density	$ρ$ = 4.43e-09
Specific heat	$c_{p}$ = 543917000

(The units are not important.)

Boundary conditions

Each cube is insulated on all faces. An initial temperature of 300° is prescribed for all elements.

Loading

A moving uniform heat source is applied to the model.

Results and discussion

In all cases, the heating patterns are as expected. The temperature output variable (NT11) is used to track the thermal pattern.

Input files

movHeat5AxisVarBead.inp: Transient heat transfer simulation with a rotating heat source and a varying height and width moving through the cube. DC3D8 elements.
movHeat5AxisNoRot_noTilt.inp: Transient heat transfer simulation with a nonrotating, nontilted uniform heat source moving through the cube. DC3D8 elements.
movHeat5AxisNoRot_withTilt.inp: Transient heat transfer simulation with a nonrotating, tilted uniform heat source moving through the cube. DC3D8 elements.
movHeat5Axis.inp: Transient heat transfer simulation with a rotating uniform heat source moving through the cube. DC3D8 elements.
movHeatNoRotVarBead.inp: Transient heat transfer simulation with a nonrotating heat source and a varying height and width moving through the cube. DC3D8 elements.
elemsAM.inp: Element connectivity for material deposition simulations.
nodesAM.inp: Node definitions for material deposition simulations.
ABQ_am_special_purpose_types.inp: Include file containing type definitions of parameter tables, property tables, and event series definitions.