Flexible-die forming process with solid granule medium on sheet metal

作     者：董国疆 赵长财 曹秒艳 Guo-jiang DONG;Chang-cai ZHAO;Miao-yan CAO

作者机构：燕山大学 先进锻压成形技术与科学教育部重点实验室秦皇岛066004 燕山大学 冷轧板带装备及工艺国家工程技术研究中心秦皇岛066004 

基　　金：Project(50775197)supported by the National Natural Science Foundation of China 

出 版 物：《Transactions of Nonferrous Metals Society of China》 (中国有色金属学报（英文版）)

年 卷 期：2013年第23卷第9期

页      码：2666-2677页

摘      要：Certain non-metallic granules （NMG） were selected as the research object. It was proposed to conduct the volume compression experiments as well as those on the NMG physical properties at high stress levels. Then, not only the volume compression ratio curve but also the extended Drucker-Prager linear model were obtained. In addition, through the friction strength tests, parameters of the Mohr-Coulomb model were gained, which proved in basic agreement with those of the extended Drucker-Prager linear model. Additionally, curves of the friction coefficients between the NMG and the sheet metal trader different pressures were also obtained. Based on the material performance experiments, numerical analysis in respect of flexible-die forming process with solid granule medium （SGM） was conducted. The die and device for experiments of solid granule medium forming （SGMF） on sheet metal were designed and manufactured. Typical parabolic parts were successfully trial-produced. The tests and simulation results show that the sheet formability is significantly improved for the extraordinary friction performance during interaction between the SGM and the sheet metal surface. The process control and die structure are simple, and the shaped work-pieces enjoy many advantages, such as satisfactory surface quality and favorable die fitability, which offers a brand-new method and means for processing and preparation of sheet metals.

主 题 词：solid granules medium forming drawing sheet metal finite element simulation 

学科分类：080503[080503] 08[工学] 0805[工学-能源动力学] 0802[工学-机械学] 080201[080201] 

核心收录：

D　O　I：10.1016/S1003-6326(13)62783-1

馆 藏 号：203969106...