Outflow characteristics of a pressure medium during sheet hydroforming and its finite element modeling

板材液压成形过程中压力介质的流出特性及其有限元建模

• 批准号: 19560727
• 负责人: TAKUDA Hirohiko
• 金额: $ 2.83万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2007
• 资助国家: 日本
• 起止时间: 2007 至 2009
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-19560727/
• 关键词: 対向液圧成形; 液圧分布; 圧力媒体流出; 摩擦低減効果

Sheet hydroforming is a deep-drawing process in which hydraulic pressure is employed instead of a female die, and is drawing a lot of attention in various industries. In this study, the outflow characteristics of a pressure medium during sheet hydroforming and their numerical modeling that can be utilized in finite element simulations of sheet hydroforming processes were examined. We proposed a numerical model to predict the critical outflow pressure of a pressure medium at the initial stage of the process. We also revealed that, after the critical outflow pressure is reached, the hydraulic pressure changes largely with the sheet deformation, suggesting that such a change in the hydraulic pressure should be taken into consideration to conduct accurate numerical simulations.

板材液压拉深是一种利用液压代替凹模的拉深工艺，在各个行业中受到了广泛的关注。本文研究了板料液压成形过程中压力介质的流出特性及其数值模拟方法，可用于板料液压成形过程的有限元模拟。我们提出了一个数值模型来预测压力介质在过程的初始阶段的临界流出压力。在达到临界出流压力后，水压随板料变形的变化较大，这说明在进行精确的数值模拟时，应考虑水压的这种变化。

项目成果

Outflow characteristics of a pressure medium during square-cup sheet hydroforming

方杯板材液压成形过程中压力介质的流出特性

• 发表时间: 2008
• 作者: Takayuki Hama;Ken Kurisu;Keita Matsushima;Hitoshi Fujimoto;Hirohiko Takuda
• 通讯作者: Hirohiko Takuda

対向液圧角筒絞り成形における液圧特性

对置液压方管拉拔成形的液压特性

• 发表时间: 2009
• 作者: 浜孝之;北島達;松嶋啓太;藤本仁;宅田裕彦
• 通讯作者: 宅田裕彦

対向液圧角筒絞り成形における圧力媒体流出特性

对置液压矩形缸拉深成形压力介质流出特性

• 发表时间: 2007
• 作者: 浜孝之;松嶋啓太;栗栖憲;藤本仁;宅田裕彦
• 通讯作者: 宅田裕彦

対向液圧成形における液圧分布の測定

对置液压成形中流体压力分布的测量

• 发表时间: 2007
• 作者: 浜孝之;栗栖憲;松嶋啓太;藤本仁;宅田裕彦
• 通讯作者: 宅田裕彦

対向液圧成形における圧力分布測定法の提案と検証

对置液压成形压力分布测量方法的提出与验证

• 发表时间: 2007
• 作者: 浜孝之;松嶋啓太;栗栖憲;藤本仁;宅田裕彦
• 通讯作者: 宅田裕彦