Strip flatness modelling including buckling phenomena during thin strip cold rolling
Strip flatness modelling including buckling phenomena during thin strip cold rolling
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DOI：
10.1179/030192310x12646889255708
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发表时间：
2010-05-01
影响因子：
2.1
通讯作者：
Buessler, P.
中科院分区：
文献类型：
--
作者：
Abdelkhalek, S.;Montmitonnet, P.;Buessler, P.
本文介绍了稳态弹粘塑性有限元模型在薄带冷轧板形和咬边失稳预报中的应用。该模型应用于镀锡板冷连轧机的最后机架。结果表明，带钢屈曲只改变了咬入区出口处的速度分布，对咬入区内的带钢应力影响不大，不会改变辊组变形和轧制力分布。本文着重于“潜在板形”，即在轧制方向上的应力的横向分布。由模型预测的轮廓远下游的辊咬是在良好的协议与板形仪的测量，只有当带屈曲（即明显的平坦度）只是在辊咬出口和它的相互作用被认为是辊咬，咬模型和咬后屈曲模型的强耦合。
This paper describes the application of a steady state elastic-viscoplastic finite element model to the prediction of strip flatness and out of bite buckling during cold rolling of thin strips. This model is applied here to the last stand of a tinplate tandem cold mill. Results show that strip buckling reshuffles the non-homogeneous strip velocity profile just at the roll bite exit; strip stresses inside the roll bite are little impacted, so that roll stack deformation and roll force profile are not modified. The paper focuses on 'latent strip flatness', i.e. the profile in the transverse direction of the stress in the rolling direction. The profile predicted by the model far downstream the roll bite is in good agreement with shapemeter measurements only if strip buckling (i.e. manifest flatness) just at the roll bite exit and its interaction with the roll bite are considered, using a strong coupling of bite model and post-bite buckling model.