基于变形均匀的叶片锻造预成形拓扑优化设计

摘要/Abstract

摘要：

为了优化预成形设计，提出了针对提高锻件变形均匀性的预成形拓扑优化算法及相关单元增删准则，并开发了优化程序，对叶片锻件翼型截面的预成形结构进行了优化设计.与静水压力的单元增删准则优化的预成形进行比较，结果表明，新模型在模腔充满的基础上可有效改善锻件的成形均匀性.另外，相对简单的外形轮廓也便于预成形的完成，总体优化设计效果比较理想.

关键词: 叶片, 预成形设计, 渐进结构优化, 拓扑优化

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

中图分类号:

TG 312

邵勇1,2，陆彬1，任发才1，陈军1. 基于变形均匀的叶片锻造预成形拓扑优化设计[J]. 上海交通大学学报（自然版）, 2014, 48(03): 399-404.

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.

参考文献

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