Quality criterion of a digital model based on its adequacy

This article presents quality criteria applicable both for software and for evaluating the quality of digital models. In the role of a specific metric of the quality of digital models, the concept of adequacy is considered according to the definition of GOST R 57700.37-2021. A mathematical expression is given to quantify the level of adequacy of the digital model. Using the example of changes made to the digital model of wear of an axisymmetric friction pair, the process of increasing the adequacy of the digital model is shown. The proposed approach to quantifying the level of adequacy of a digital model allows to compare different variations of one model with each other, and taking into account the costs required to implement certain changes, it can help determine the optimal level of adequacy, exceeding which will require too many resources.