35th Congress of the International Council of the Aeronautical Sciences

08 - Manufacturing and Supply Chain Management

3D ANALYSIS AND PREDICTION FOR ASSEMBLY STEP DEVIATIONS OF FOUR-BAR LINKAGE BAY DOORS

R. Yang¹, L.K. Yang¹, L. Wei¹, S.Y. Sun¹; ¹Dalian University of Technology, China

This work proposes a 3D tolerance analysis approach for complex spatial mechanisms and applies it to a four-bar linkage bay-door system. By integrating a 3D vector-loop model and an improved SOTA method, the approach enables efficient prediction of assembly step deviations and provides practical support for tolerance design. The framework can be extended to other complex mechanical systems.


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DOI: 10.71945/icas2026_0140