GEOMETRY OPTIMISATION OF THE SQUARE-ENDED JOINTS USING FINITE ELEMENT ANALYSIS

Teofil MIHAILESCU
Prof.Dr.Eng. - Universitatea "Transilvania" din Brasov - Facultatea de Industria Lemnului
Address: B-dul Eroilor nr. 29, 500036 Brasov, Romania
Tel.: +40 268 415315. Fax: +40 268 415315
E-mail: teomih@unitbv.ro

Abstract: The paper presents the design optimisation technique of the mortise and tenon joints geometry provided by the finite element program ANSYS. For this purpose the APDL language was used in order to design macro commands that allow generating 3D parametric models, automatically. The objective of this design optimization analysis is to determine the optimum dimensions of the tenon and mortise (design variables) loaded by a concentrated load, which correspond to the minimum deflection (objective function) of the part with tenon, in the vertical direction, of square mortise and tenon joints. The following design variables were used in this optimisation analysis: length (B), width (L), and thickness (G) of the tenon. The optimisation analysis was carried out for square-ended joints with stub and through tenon made of beech, in order to obtain feasible optimization data sets.

Key words: ANSYS, APDL, FEA, joints, parametric model, optimisation, wood.

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