宽板U形自由弯曲智能化控制过程的解析定量描述  

Analytic description of intelligent control of U-shape free bending of wide sheet metal

作　　者：苏春建[1,2] 赵军[2] 官英平[2] 

机构地区：[1]山东科技大学,青岛266510 [2]燕山大学,秦皇岛066004

出　　处：《塑性工程学报》2009年第3期1-8,共8页Journal of Plasticity Engineering

基　　金：高等学校博士学科点专项科研基金资助项目(20050216013);山东科技大学春蕾计划项目(2008BWZ018)

摘　　要：根据板材弯曲理论,在平面变形假设的前提下,考虑了材料的硬化、各向异性及弹性变形,建立了U形件自由弯曲理论分析模型,对宽板U形件自由弯曲进行了理论分析,得出了弯曲力随弯曲行程变化规律及目标弯曲角计算公式,并对各种影响弯曲力和回弹的因素进行了分析,理论计算与实验及模拟结果进行了比较,为宽板U形件自由弯曲智能化控制中参数识别及预测模型输入层和输出层变量的确定提供了理论依据。An analytical model of U-shape free bending is proposed in this paper based on plane strain condition and bending theory of sheet metal. The model takes into account of the springback of the harden ability, anisotropy and elastic deformation of sheet metal. The process of U-shape free bending of wide sheet metal is analyzed based the model in this paper, obtains calculate formula between bending stroke and bending force, springback angle, and analyzes the factors which influence bending force and springback. Solution of theory is compared to experiment and simulation. It provides the theory base for the confirmation of parameter identification and prediction model of the import layer and export layer in intelligent control of cap-shape bending of wide sheet metal.

关 键 词：U形件弯曲 回弹 弯曲力 弹塑性变形 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置] TU323.3[自动化与计算机技术—控制科学与工程]