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This research aims to evaluate two modeling strategies for predicting residual stresses in laser powder bed fusion parts.

Residual stress prediction for laser powder bed fusion parts: a critical assessment of inherent strain and block dump modelling strategies

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Randomized trial assesses residual stress prediction in LPBF components, indicating the effectiveness of simulation methods.

This research aims to evaluate two modeling strategies for predicting residual stresses in laser powder bed fusion parts.
Developed part-scale simulation methods: inherent strain and block dump methods.
Conducted benchmark comparisons against experimental data, including cantilever deflections and neutron diffraction stress fields.
Performed sensitivity analyses on the inherent strain tensor calibration and robustness of each method.
The block dump method showed higher accuracy compared to the inherent strain method without needing calibration.
Predictions from the inherent strain method were sensitive to the calibration of the strain tensor.
Both methods effectively predicted trends but the block dump method demonstrated better generalization for LPBF components.

Markovic et al. (2026) studied this question.

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