Meshfree Simulations for Additive Manufacturing Process of Metals

A Lagrangian meshfree mesoscale simulation of powder bed fusion additive manufacturing of metals

“…1 Most of the simulations consider the powder bed as a continuous media and predict the temperature distribution and residual stresses of the printed material. 20,21,25,[37][38][39][40][41] Yuan and Gu, 25 for example, performed finite volume simulations of PBF-AM to study the effect of Marangoni convection on heat and mass transfer. Their results show that the thermodynamic flow is symmetric along the melt track and does not exhibit fluctuations due to a randomly packed powder particles.…”

“…Grid‐based numerical methods, such as the finite element method (FEM), 20‐22 finite volume method (FVM), 23‐29 arbitrary Lagrangian‐Eulerian method (ALE), 30‐32 and the lattice Boltzmann method (LBM), 33‐36 are popular numerical solutions for modeling metal PBF AM processes 1 . Most of the simulations consider the powder bed as a continuous media and predict the temperature distribution and residual stresses of the printed material 20,21,25,37‐41 . Yuan and Gu, 25 for example, performed finite volume simulations of PBF‐AM to study the effect of Marangoni convection on heat and mass transfer.…”

Study of deformation zone effects of low, conventional, high and very high speed machining

“…The high speed machining was researched for turning and milling by various authors in conditions of either coated, uncoated cutting tools or dry and wet machining and different materials as the difficult to machined; hardened materials; stainless steel; alloys; composite materials etc. [8][9][10][11][12][13][14][15]. The investigators in several last years are focused on machining titanium alloys in field of high cutting speed and its numerical simulations [14,16,17].…”

“…Different studies showed there is a question of optimal cutting speed. For example, the appropriate cutting speed to reduce the tool wear under specific cutting conditions influences the tool-chip interface when machining the nickel-based alloy that has poor thermal conductivity and serious work hardening [13].…”

“…To be able to apply high cutting speeds in production, it is necessary to know the dependence of those characteristics on cutting speed. It is known that cutting speed has a significant influence on the character of chip formation and the creation of a built-up edge [13,[19][20][21]. It is caused by the fact that the increase of cutting speed increases practically linearly the temperature in the tool-chip-workpiece interfaces and as well as in shear zone.…”