Shape optimisation of preform design for precision close-die forging
作者： Bin Lu , Hengan Ou , Z. S. Cui
DOI: 10.1007/S00158-011-0668-1
关键词: Material distribution 、 Forging 、 Smoothing 、 Structural engineering 、 Engineering 、 Topology (electrical circuits) 、 Curve approximation 、 Boundary (topology) 、 Engineering design process 、 Airfoil
摘要: Preform design is an essential stage in forging especially for parts with complex shapes. In this paper, based on the evolutionary structural optimisation (ESO) concept, a topological method developed preform design. method, new criterion element elimination and addition workpiece boundary surfaces proposed to optimise material distribution. To improve quality of after elimination, smoothing technique using B-spline curve approximation. The methods are programmed C# code integrated DEFORM 2D software package. Two case problems including aerofoil shape rail wheel evaluated method. results suggest that topology efficient approach optimisation.
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