Open Access

Table 5

Classification of the of the modelling studies on the SLM AM process.

Reference number KPI Process parameter (Variable)
[55] Surface roughness Surface sloping angle
[56] Porosity, roughness Scanning speed, powder layer thickness, laser power
[31] Residual Stresses Exposure strategy of the laser beam
[32] Residual stresses, distortions  
[57] Melt pool width Scanning speed
[58] Stress field, thermal history, Laser scanning speed
[59] Rate of temperature change, melt penetration/width, percentage of evaporated powder, build rate, volume shrinkage Distance from melt pool, laser power, scan speed
[60] Track formation shape Laser power, scan speed
[61] Melting, wetting, solidification Powder-layer thickness, moving heat source intensity, scan spacing, scanning velocity
[62] Residual stresses, tensile stress Heating of base plate, heat treatment type, re-scanning
[63] Stiffness, yield strength, plateau stress, energy absorbed, densification strain Unit cell aspect ratio
[41] System temperature  
[49] Heat transfer related  
[50] Part Temperature history Layer position in the part under construction
[64] Temperature, melt pool, liquid lifetime Scan speed, laser power
[65] Width of the melt track, temperature distribution Scan speed, laser power
[66] Melting depth/width, temperature distribution Scanning speed, laser power
[67] Absorbed lateral radiation Beam shape characteristics
[68] Effective thermal conductivity of support structures, temperature Volume fraction, number of cells
[69] Thermal modelling, melt pool shape characteristics Evaporation, laser power
[70] Thermal history, melt pool dimensions, computational speed Laser power, scan speed, meshing size adaptation

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