A New Calibration Method for FLCs in the M-K Frame-Work

被引：2

作者：

Ghazanfari, Amir ^{[1
]}

Assempour, Ahmad ^{[1
]}

机构：

[1] Sharif Univ Technol, Ctr Excellence Design Robot & Automat, Dept Mech Engn, Tehran, Iran

来源：

MATERIAL AND MANUFACTURING TECHNOLOGY II, PTS 1 AND 2 | 2012年 / 341-342卷

关键词：

Forming Limit Curve; M-K Method; Inhomogeneity Factor; Empirical Law; FORMING LIMIT DIAGRAMS; SHEET-METAL; DUCTILE FRACTURE; YIELD CRITERIA; STEEL SHEETS; PREDICTION; FORMABILITY; STRAINS; NECKING; MODELS;

D O I：

10.4028/www.scientific.net/AMR.341-342.426

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The main drawback of the method proposed by Marciniak and Kuczynski for prediction of the limit strains in sheet metal forming processes is requirement of an experimental point of the forming limit curve (FLC) in order to calibrate the curve. The purpose of this work is to introduce a new method to calibrate the FLC using the M-K model in which no experimental data is needed. To achieve this goal, many experimental FLCs were collected from the literature and the values of the initial inhomogeneity factors were determined for them with trial and error aproach. Using these data, an empirical law was developed to predict the value of inhomogeneity factor. The resultant curves show good agreement with the experiments.

引用

页码：426 / 431

页数：6

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