
doi: 10.1002/nme.7378
AbstractTo reduce computational time of thermo‐mechanical simulation of additive manufacturing processes, the inherent strain (IS) method is quite efficient, but suffers from a lack of predictivity, preventing concurrent quantitative prediction of distortion and stress. In order to investigate the predictive ability of the IS method, a new variant of the method is proposed in which the determination of the IS tensor is based on simulation results from a standard thermo‐elastic‐viscoplastic simulation applied to a few learning layers of the studied part. More precisely, the inherent strains are determined by a direct resolution performed in each finite element, with a negligible computation cost. Because of these specific features, the predictive ability of this IS method is formulated as its ability to replicate the distortion and stress predicted by the reference standard thermo‐elastic‐viscoplastic simulation. The proposed IS method provides perfect results in a validation test where full‐field inherent strains are used in each added layer: the distortion and stress predicted by the thermo‐elastic‐viscoplastic simulation are exactly replicated by the IS method. However, when applying the IS method to the simulation of an entire part, here a turbine blade mock‐up, the results are degraded with respect to the reference solution obtained by the thermo‐elastic‐viscoplastic simulation. Results are then discussed to evaluate the limitations of the proposed method, and of the IS method in general.
Nonlinear constitutive equations for materials with memory, Finite element methods applied to problems in solid mechanics, Numerical computation of solutions to systems of equations, Nonlinear elasticity, 600, Finite element, Rayleigh-Ritz and Galerkin methods for boundary value problems involving PDEs, 620, finite element, numerical simulation, [PHYS.MECA.SOLID]Physics [physics]/Mechanics [physics]/Solid mechanics [physics.class-ph], inherent strain, PDEs in connection with mechanics of deformable solids, additive manufacturing, Thermodynamics in solid mechanics
Nonlinear constitutive equations for materials with memory, Finite element methods applied to problems in solid mechanics, Numerical computation of solutions to systems of equations, Nonlinear elasticity, 600, Finite element, Rayleigh-Ritz and Galerkin methods for boundary value problems involving PDEs, 620, finite element, numerical simulation, [PHYS.MECA.SOLID]Physics [physics]/Mechanics [physics]/Solid mechanics [physics.class-ph], inherent strain, PDEs in connection with mechanics of deformable solids, additive manufacturing, Thermodynamics in solid mechanics
| selected citations These citations are derived from selected sources. This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | 11 | |
| popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network. | Top 10% | |
| influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | Average | |
| impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network. | Top 10% |
