Formability limits by wrinkling in sheet metal forming

被引：24

作者：

Magrinho, J. P. G. ^{[1
]}

Silva, C. M. A. ^{[1
]}

Silva, M. B. ^{[1
]}

Martins, Paulo A. F. ^{[1
]}

机构：

[1] Univ Lisbon, Inst Super Tecn, IDMEC, Av Rovisco Pais, P-1049001 Lisbon, Portugal

来源：

PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART L-JOURNAL OF MATERIALS-DESIGN AND APPLICATIONS | 2018年 / 232卷 / 08期

关键词：

Sheet metal forming; wrinkling; deep-drawing; experimentation; finite element method; FRACTURE;

D O I：

10.1177/1464420716642794

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This paper presents a new combined experimental and theoretical methodology for determining the formability limits by wrinkling in sheet metal forming. The methodology is based on the utilization of rectangular test specimens clamped along its narrower sides and compressed lengthwise and is aimed at replicating the physics behind the occurrence of wrinkling in deformation regions submitted to in-plane compression along one direction. The methodology draws from a previous development in the field of flexible roll forming, and the overall objectives are to enhance and improve its methods and procedures and to provide a new level of understanding on the onset of wrinkling in sheet metal forming. Experimentation and finite element modelling of cylindrical deep-drawing without blank holder combined with the utilization of the space of effective strain vs. stress triaxiality are employed to discuss the applicability and validity of the new proposed methodology for determining the formability limits by wrinkling.

引用

页码：681 / 692

页数：12

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