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本文使用ODF数据预报了薄板的一些成型参数,如屈服应力σ_(?)、屈服面、塑性应变比γ值和弹性模量E等。以细观塑性力学为基础,在计算中作了严格处理,澄清了前人的一些不妥之处。通过对08铝薄板γ值实验数据和一系列文献提供的滑移模型的预报结果进行对比,得出使泰勒因子M值越高的模型,基于该模型的预报结果也就越接近实验值,从而加深了对最大塑性功原理的认识。在此基础上提出了一个关于BCC材料滑移变形的新模型。用它预报的γ值以及屈服应力随板材取向的变化与实验符合较好。根据这一模型对BCC材料的变形机制及其对γ值的影响作了讨论。
In this paper, some forming parameters of sheet are predicted using ODF data, such as yield stress σ_ (?), Yield surface, plastic strain ratio γ value and elastic modulus E and so on. Based on meso-plasticity mechanics, we made rigorous calculations in calculations and clarified some of the anomalies of our predecessors. By comparing the experimental data of the γ-sheet of 08 aluminum sheet with the predictions of a series of slip models provided by the literature, the higher the value of the Taylor factor M is, the closer the prediction is based on the model to the experimental value Deepen the understanding of the principle of maximum plasticity work. On this basis, a new model about the slip deformation of BCC material is proposed. The γ value predicted by it and the change of yield stress with the orientation of the plate are in good agreement with the experiment. According to this model, the deformation mechanism of BCC material and its effect on γ value are discussed.