外卷边槽钢辊弯成型过程数值模拟

Numerical Simulation of Roll Forming for Channel Section With Outer Edge

1.
School of Biology and Agricultural Engineering, Jilin University, Changchun 130025. P R China;
2.
Institute of Rolling Mill, Yanshan University, Qinhuangdao 066004, P R China;
3.
Changchun Cold-Rolled Forming Section Steel General Works, Changchun 130042, P R China

摘要: 拓展了结构分析有限条法,基于固体力学有限形变理论的更新拉格朗日法(U.L.法),建立了弹塑性大变形样条有限条法,并将其用于模拟外卷边槽钢辊弯成型过程,分析了带材的变形特点,获得了变形带材的三维位移场、应变场和应力场。算例表明,变形带材的角部出现横向压应变峰值,外卷边轧辊前部位出现纵向拉应变峰值。另外,带材的横向变形是主要的,纵向变形较小。
- 辊弯成型 /
- 外卷边槽钢 /
- 有限条法 /
- 数值模拟
Abstract: The finite strip method in structural analysis has been extended,and elastic-plastic large deformation spline finite strip method based on the Updated-Lagrange method(U.L.method)was established to simulate roll forming process of channel section with outer edge.The deformation characteristics of strip was analyzed,and the three dimensional displacement field,strain field and stress field of deformed strip were got.The calculation example proves that the peak transverse pressing membrane strain is on the corner part of the deformed strip,and the peak longitudinal stretching strain is on the outer edge part of the deformed strip in front of rolls.In addition,the transverse deformation of the deformed strip is principal,and the longitudinal deformation is small.
- roll forming /
- channel section with outer edge /
- finite strip method /
- numerical simulation

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