• CN：11-2187/TH
• ISSN：0577-6686

• 数字化设计与制造 •

### 一步逆成形法中边界等效阻力的自适应算法

1. 南京航空航天大学机电学院 南京 210016
• 出版日期:2016-05-05 发布日期:2016-05-05
• 作者简介:崔静,女,1990年出生,硕士研究生。主要研究方向为板料成形与控制。E-mail：cjcmee@sina.com;鲍益东(通信作者),男,1976年出生,博士,副教授,硕士研究生导师。主要研究方向为板料成形与控制。E-mail：baoyd@nuaa.edu.cn
• 基金资助:
国家自然科学基金(51275236)和南京航空航天大学基本科研业务费(NS2013054)资助项目

### Self-adaptive Algorithm of the Equivalent Resistance on the Boundary Line in One-step Inverse Analysis

CUI Jing, BAO Yidong

1. College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016
• Online:2016-05-05 Published:2016-05-05

Abstract: In one-step inverse analysis, the resistance produced by the blank holder or draw bead should be given by experience and then equivalent to the nodal force on the boundary line for obtaining a rational blank shape if the final configuration only contains the part surface. However, the resistance is not distributed uniformly. Handling as uniform distribution will cause big error. Giving manually section by section is inefficient. Here, a self-adaptive algorithm of the equivalent resistance is introduced. In the algorithm, firstly the initial configuration is obtained by linear elastic reverse deformation without considering any resistance. Then the resistance is assumed to be in direct proportion to the distance between the above mentioned initial configuration and the part contour line. In this way, the equivalent resistance can be distributed adaptively. To confirm the algorithm’s validity, two typical stamping parts are presented as examples. By comparing four different results respectively obtained by non-uniformly distributed resistance algorithm, uniformly distributed resistance algorithm, giving resistance manually section by section, a commercial software Fastform and trial and error, this self-adaptive algorithm is proved accurate and convenient.