Model verification is the process of ensuring that a numeric model solves the equations it is intended to solve correctly. This is distinctly different from validation, which is often conflated with verification, which attempts to show a model captures a certain physical behavior with experimental measurements. Verification does not rely upon measurements but instead analytical solutions. Verification of the Netfabb Simulation Solver can be found in References 4 and 5.
Model validation is the process of comparing model predictions to experimental results in order to determine if the model accurately aligns with physical reality. In situ temperature, in situ distortion, post-process distortion, and residual stress data is commonly used to validate thermomechanical models in AM and welding. The Netfabb Simulation Solver has been validated in References 4, and 6–14.