Peridynamic Model for Selective Laser Melting with Gaussian Moving Heat Source

Fig. 9. Temperature distribution of heat transfer sphere model at different time. (a) t=100 s; (b) t=200 s; (c) t=300 s; (d) t=400 s; (e) t=500 s; (f) t=600 s

Download full size

Fig. 10. Temperature curves at center of sphere

Download full size

Fig. 11. Moving Gaussian heat source model with 2D plate

Download full size

Fig. 12. Temperature distribution in middle area of plate at different time. (a) t=0 s; (b) t=0.005 s; (c) t=0.010 s; (d) t=0.020 s; (e) t=0.040 s; (f) t=0.080 s

Download full size

Fig. 13. Comparison of temperature variation along x-direction at y=0

Download full size

Fig. 14. Comparison of horizontal displacement variation along x-direction (y=0) at different time

Download full size

Fig. 15. Horizontal displacement field at t=0.080 s

Download full size

Fig. 16. Comparison of temperature variation along x-direction (y=0) in two conditions

Download full size

Fig. 17. Single layer powder bed model

Download full size

Fig. 18. Temperature distribution of powder bed surface at different time. (a) t=0.025 s; (b) t=0.050 s; (c) t=0.075 s; (d) t=0.100 s; (e) t=0.125 s; (f) t=0.150 s; (g) t=0.175 s; (h) t=0.200 s

Download full size

Fig. 19. Temperature distribution of upper and lower surface of powder bed at t=0.200 s. (a) z=0; (b) z=-0.800 mm

Download full size

Fig. 20. Temperature curves variation with time at points P₁, P₂, and P₃

Download full size

Table 1. Parameters of cuboid sample heat transfer model

View table

Table 1. Parameters of cuboid sample heat transfer model

Parameter	Value
Length $L_{1}$	0.010 $m$
Width $W_{1}$	0.001 $m$
Height $H_{1}$	0.001 m
Density $ρ$	260 $k g / m^{3}$
Thermal conductivity $k$	233 $W / (m \cdot K$ ）
Specific heat capacity $c_{v}$	64 $J / (k g \cdot K)$
Initial temperature of cuboid sample $T_{a}$	100 ℃
Left side constant temperature $T_{L}$	0 ℃
Right side constant temperature $T_{R}$	300 ℃
Spacing between material points $Δ_{1}$	1×10^-4 $m$
PD horizon $δ$	3.015×10^-4 $m$

Table 2. Parameters of heat transfer sphere model

View table

Table 2. Parameters of heat transfer sphere model

Parameter	Value
Density $ρ$	8000 $k g / m^{3}$
Thermal conductivity $k$	50 $W / (m \cdot K)$
Specific heat capacity $c_{v}$	500 $J / (k g \cdot K)$
Radius $R_{0}$	0.100 $m$
Convective heat transfer coefficient $h_{A}$	100 $W / (m^{2} \cdot K)$
Initial temperature of sphere $T_{0}$	20 ℃
Ambient temperature $T_{A}$	100 ℃
Spacing between material points $Δ_{2}$	0.010 $m$
PD horizon $δ$	3.15×10^-2 $m$

Table 3. Parameters of moving Gaussian heat source model with 2D plate

View table

Table 3. Parameters of moving Gaussian heat source model with 2D plate

Parameter	Value
Length $L_{p}$	0.100 $m$
Width $W_{p}$	0.100 $m$
Thickness $H_{p}$	0.010 m
Density $ρ$	7820 $k g / m^{3}$
Thermal conductivity $k$	50 $W / (m \cdot K)$
Specific heat capacity $c_{v}$	490 $J / k g$
Thermal expansion coefficient $α$	1.3×10^-5 $K^{- 1}$
Elastic modulus $E_{}$	200 $G P a$
Heat source power $P$	3200 $W$
Heat source speed $v_{x}$	0.25 $m / s$
Heat source radius $ω$	7×10^-4 $m$
Initial temperature $T_{0}$	0 ℃
Spacing between material points $Δ_{3}$	4×10^-4 $m$
PD horizon $δ$	1.201×10^-3 $m$

Table 4. Parameters of single layer powder bed model
View table
Table 4. Parameters of single layer powder bed model
Parameter Value
Length $L$ 0.020 $m$
Width $W$ 0.020 $m$
Height $H$ 8×10^-4 $m$
Initial temperature $T_{0}$ 0 ℃
Spacing between material points $Δ_{4}$ 2×10^-4 $m$
PD horizon $δ_{4}$ 6.01×10^-4 $m$

Tools

Get Citation

Copy Citation Text

Kailiang Yang, Huaixue Li. Peridynamic Model for Selective Laser Melting with Gaussian Moving Heat Source[J]. Chinese Journal of Lasers, 2024, 51(16): 1602303

Download Citation

EndNote(RIS)BibTex Plain Text

Set citation alerts for article

Save article for my favorites