What question did this study set out to answer?

Develop and validate a hybrid numerical modeling framework to predict bead geometry, thermal history, substrate distortion, and residual stresses in SS308L multiwall structures produced via wire arc additive manufacturing.

August 14, 2026Discover SurfacesOpen Access

Numerical modelling of geometry, residual stresses and thermal history in SS308L walls manufactured by WAAM on low alloy substrate

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Authors

AMAlexandra MorvayovàPolytechnic University of Bari MKMojtaba KaramimoghadamUniversité du Québec à Chicoutimi NCNicola ContuzziPolytechnic University of Bari

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Implication

Simulation study demonstrates accurate thermal and distortion predictions in WAAM-fabricated stainless steel, indicating reliable toolpath and stress optimization.

Key Points

Develop and validate a hybrid numerical modeling framework to predict bead geometry, thermal history, substrate distortion, and residual stresses in SS308L multiwall structures produced via wire arc additive manufacturing.
Integrated macro-scale finite element thermomechanical simulations with analytical bead geometry models using a Goldak double-ellipsoid heat source formulation.
Conducted experimental wire arc additive manufacturing deposition of SS308L on a low-alloy substrate while monitoring thermal cycles with an infrared camera.
Simulated thermal profiles closely mirrored experimental thermal camera measurements across consecutive deposition cycles.
Predicted substrate distortion achieved an average relative error below 5%, improving upon conventional macro-scale models.
Simulated bead morphology accurately matched the printed specimen, and residual stress patterns aligned qualitatively with established literature trends.

Cite This Study

Morvayovà et al. (2026) studied this question.

synapsesocial.com/papers/6a7ec6eab70b84ec8b912f72 https://doi.org/10.1007/s44507-026-00009-3

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Implication

Simulation study demonstrates accurate thermal and distortion predictions in WAAM-fabricated stainless steel, indicating reliable toolpath and stress optimization.

Numerical modelling of geometry, residual stresses and thermal history in SS308L walls manufactured by WAAM on low alloy substrate

Discussion

Member takes

Implication

Key Points

Cite This Study

Numerical modelling of geometry, residual stresses and thermal history in SS308L walls manufactured by WAAM on low alloy substrate

Discussion

Member takes

Implication

Key Points

Cite This Study

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