Hits:

Indexed by:Journal Papers

Date of Publication:2020-01-01

Journal:Computer-Aided Design and Applications

Included Journals:EI

Volume:17

Issue:3

Page Number:475-486

ISSN No.:16864360

Abstract:The topology-optimized functional structure has complex contour described by free curves and its manufacturing for accurate performance implementation is difficult. The boundary of topology-optimized functional structures has different sensitivity to errors. Therefore, it is unreasonable to improve the machining precision blindly to meet performance requirements. The paper presents two different tolerance analysis methods, including uniform tolerance analysis and segment-contour tolerance analysis. In order to achieve performance-oriented tolerance design, the study adopted the improved line profile based on ISO 1101:2017. By building the machining error simulation model and finite element analysis, tolerance design functions for performance are obtained under two tolerance analysis methods. Then, tolerance allocation methods are developed under different performance requirements and machining precision. The segment-contour tolerance design can realize the precision manufacturing of structural performance under the constraint of the large tolerance range, which is more economical than the uniform tolerance analysis method. Finally, a numerical experiment is given to demonstrate the capability of the proposed tolerance design method. ? 2020 CAD Solutions, LLC,.