Wrinkling and fracture are the major defects in sheet metal forming, and the blank-holder force(BHF) is an important technologic parameter controlling the forming of sheet metal.
在板材成形中，起皱和拉裂是主要缺陷，而压边力是控制板材成形的重要工艺参数。
The equipment has simple structure, is economical and practical and with variable blank holder force. High-quality complex sheet parts can be produced with this equipment.
该装备具有结构简单、经济实用、可实现变压边力控制等特点，可获得高质量的复杂板料成形件。
The predominant failure modes in stamping of sheet metal parts are wrinkling and fracture. In general, these defects may be eliminated by appropriately manipulating the Blank-Holder Forces.
起皱和断裂是板料成形过程的主要失效模式，合理控制成形过程中的压边力，可以消除这些缺陷，提高成形性能。
The utility model discloses a rechargeable lamp, including a cylindrical lamp holder, a helicoidal socket, a holder motherboard, a conduction metal sheet and a storage battery.
本实用新型公开了一种能充电的电灯，由圆筒灯座、螺圈灯口、灯座底板、导电金属片和蓄电池组成。
In this paper, we studied how to select the deceleration coefficient and how to simplify the blank holder model in the simulation of the sheet metal metal forming process.
本文研究了板料成形模拟中减速系数选取和压边圈简化模型，编制了相应的有限元数值模拟程序SPID。
In this paper, we studied how to select the deceleration coefficient and how to simplify the blank holder model in the simulation of the sheet metal metal forming process.
本文研究了板料成形模拟中减速系数选取和压边圈简化模型，编制了相应的有限元数值模拟程序SPID。
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