Material Deposition

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 material deposition in an FDM- and LDED-type additive manufacturing process. The simple model geometry was chosen to clearly depict the motion and orientation of the bead as it deposits material.

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.


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

No loads are applied.

Results and discussion

In all cases, the material deposition patterns are as expected. The volume fraction output variable (EACTIVE) is used to track the material deposition pattern.

Input files

matDep5AxisAbove.inp: Material deposition simulation using a rotating bead with the bead offset above the tool path. DC3D8 elements.
matDep5AxisMiddle.inp: Material deposition simulation using a rotating bead with the bead set to the middle of the tool path. DC3D8 elements.
matDep5AxisBelow.inp: Material deposition simulation using a rotating bead with the bead offset below the tool path. DC3D8 elements.
matDep5AxisBelow_withTilt.inp: Material deposition simulation using a nonrotating tilted bead with the bead offset below the tool path. DC3D8 elements.
matDep5AxisVarBead.inp: Material deposition simulation using a rotating bead that varies in height and width along the tool path. DC3D8 elements.
matDepBeadOri.inp: Material deposition simulation using a nonrotating bead that is oriented at a fixed angle relative to the global x- and y-axes along the tool path. DC3D8 elements.
matDepNoRotVarBead.inp: Material deposition simulation using a nonrotating bead that varies in height and width along the tool path. DC3D8 elements.
matDepNoRotXStackDir.inp: Material deposition simulation using a nonrotating bead with the height (stack direction) aligned with the global x-direction. DC3D8 elements.
matDepNoRotYStackDir.inp: Material deposition simulation using a nonrotating bead with the height (stack direction) aligned with the global y-direction. 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.