Modelling Geometric Deviations in Additive Manufacturing of a Cylindrical Surface
1
Industrial Techniques and Services, Sidi Mohamed ben Abdellah University, Morocco
These authors had equal contribution to this work
Submission date: 2025-03-23
Final revision date: 2025-07-01
Acceptance date: 2025-10-06
Online publication date: 2025-11-17
Corresponding author
KEYWORDS
TOPICS
ABSTRACT
This work presents, in a first part, a state of the art on geometric deviation modelling in additive manufacturing. It then proposes a geometric deviation modelling methodology based on part discretization, considering the systematic and random deviations. Systematic deviations are represented by three defect modes: meshing mode, radius change mode, and elliptical mode, while random deviations are generated automatically according to a normal distribution. A mathematical model is established to express geometric deviations at each point of the discretized surface. It is based on the nominal surface, with calculated deviations added. The goal of this model is to obtain the skin model surface, which represents the real surface. The methodology begins with the discretization of the nominal surface, followed by the generation of systematic and random geometric deviations at each point of the nominal surface. After that, the skin model surface is calculated. An algorithm is developed to facilitate the calculation and tracing of the part's profile with defects.
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| ISSN: | 1895-7595 |
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