Elasto-plastic residual stress analysis of selective laser sintered porous materials based on 3D-multilayer thermo-structural phase-field simulations

The supporting data and utilities from the publication "Elasto-plastic residual stress analysis of selective laser sintered porous materials based on 3D-multilayer thermo-structural phase-field simulations" are recorded in this dataset. 

Non-isothermal phase-field simulations of SLS process on SS316L material and subsequent elasto-plastic calculations were performed to analyze the development of plastic deformation and residual stress in SLS produced components during the processing. The dependence of the fusion zone, residual stress and plastic strain on the processing parameters namely, Beam power (Unit: Watts) and Scan speed (Unit: mm/s) were investigated. 

To promote FAIR research data principles, the processed simulation data from the thermo-elasto-plastic calculations for all the process parameter sets (hereby refered as P-v sets) are curated in this dataset. The raw temporal data obtained from the processing simulations and the elasto-plastic could not be included in this dataset due to its high volume. However, the corresponding raw data can be requested by contacting the creators of this dataset (Yangyiwei Yang: [e-mail] and Somnath Bharech: [e-mail]).

This dataset includes: 

average_value.csv: Contains average values of mechanical properties (such as residual stress, plastic strain) for the powder bed and the fused strut of all the process parameter sets.

mesostructures_tep_sls.zip : Contains resampled mesostructures obtained at the last time step of the SLS processing simulations with thermo-elasto-plastic calculations for the P-v sets reported in the aforementioned investigation. Nomenclature of the sub-directories indicating the P-v sets follows: tep_-. Each of these sub-directories contain the mesostructures from last time step of the thermo-elasto-plastic analysis of each of the four layer scans and is named as: TP_layer{1..4}_output_final.e. These files can be opened using Paraview v.5.8.1 or higher. The nodal values are explained as follows:

Nodal value name
Symbol
Description
Unit

T
\(T\)
Temperature field normalized by \(T_M\)
-

c
\(\rho\)
Substance order parameter
-

eps_ij  
\(\varepsilon\)
Strain
-

epsp_ij
\(\varepsilon^\text{pl}\)
Plastic strain
-

peeq
\(p_\text{e}\)
Accumulated plastic strain
-

sigma_ij  
\(\sigma\)
Stress
MPa

vonmises
\(\sigma_\text{e}\)
von Mises stress  
MPa

u
\(\mathbf{u}\)
Displacement
µm