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薄壁管材在连续矫直过程中会在大弯曲变形阶段发生截面扁化(即Bazier效应),截面最大扁化量和残留扁化量作为重要工艺参数,用以控制截面变形程度和管材的圆度。而目前现场仍沿用经验图表结合人工经验和反复试矫对其进行估定,为此运用ANSYS/LS-DYNA对薄壁管材弯曲扁化的过程进行动态仿真,得到了最大扁化量和残留扁化量数据,并通过现场实验证明了分析结果的正确性和可信性,为现场矫直过程相关工艺参数的合理设置提供有效手段。
In the continuous straightening process, the thin-walled pipe will have cross-sectional flattening (ie, Bazier effect) during the large bending deformation, and the maximum amount of flattened section and remaining flattened amount as important process parameters to control the degree of cross-section deformation and the circle degree. At present, the experience is still used in the field with artificial experience and repeated trials to assess it. For this reason, ANSYS / LS-DYNA is used to simulate the process of bending and thinning of thin-wall pipe. The maximum amount of flattened and residual flat The quantitative data and the correctness and credibility of the analysis results are proved by the field experiments, which provides an effective means for the reasonable setting of relevant process parameters in the field straightening process.