论文部分内容阅读
理论和实践表明卷筒径向压力是用于校核卷筒强度的破坏应力,而带卷中的切向压应力是用于校核带卷塌卷的危险应力。关于卷取力参数,从现有文献来看,理论和实验多侧重于卷筒径向压力的研究。其计算公式大都以卷取张力沿板宽方向呈均匀分布为假设,即认为卷筒在轴向任一截面上的表面径向压力代表了卷筒整个宽度上的力学状态。然而从现有测试结果来看,参见文献。即使是窄带钢卷取,沿带材宽度方向上径向压力的分布也是相当不均匀的,越靠近带卷中部径向压力越高,边部压力则较低。而对于大板宽的带卷,分布不均匀情况更为严重,
Theory and practice show that the radial pressure of the roll is used to check the breaking strength of the roll strength, and the tangential compressive stress in the roll is used to check the dangerous stress of the roll of the roll. With regard to the parameters of coiling force, from the existing literature, the theory and experiment mostly focus on the study of the radial pressure of the drum. Most of the calculation formulas are assumed that the winding tension is uniformly distributed along the width direction of the plate. That is, the radial pressure on the surface of the mandrel in any axial section represents the mechanical state over the entire width of the mandrel. However, from the existing test results, see the literature. The radial pressure distribution along the strip width is quite non-uniform even with narrow strip coiling, and the higher the radial pressure in the middle of the strip, the lower the edge pressure. As for the large width of the coil, the distribution is even more serious non-uniform,