Preform Design with Improvement of Deformation Uniformity in Blade Forging Based on Topology Optimization Method

Abstract

Abstract:

In order to design and optimize the preform, new element addition and removal criteria were proposed for improving the forging uniformity based on the evolutionary structural optimization (ESO) method. By utilizing the self-programmed code and DEFORM-2D FE software, the optimal design of the aerofoil section of the blade was implemented. Compared with the preform optimized by hydrostatic stress from the existing literature, the preform optimized by the new strategy achieves sufficient die-filling and enhances forging uniformity effectively. Besides, it has relatively simple contour and is convenient to be formed. The satisfactory preform structure is obtained finally.

Key words:blade,preform design,evolutionary structural optimization,topology optimization

CLC Number:

TG 312

SHAO Yong1,2,LU Bin1,REN Facai1,CHEN Jun1. Preform Design with Improvement of Deformation Uniformity in Blade Forging Based on Topology Optimization Method[J]. Journal of Shanghai Jiaotong University, 2014, 48(03): 399-404.

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