从研究2-2-2型无缝钢管斜辊矫直机矫直过程入手,基于大变形弹塑性有限元法,应用ANSYS/LS-DYNA软件建立了Ф88 mm×10 mm×2500 mm无缝钢管斜辊冷矫直的数值模型。通过模拟计算分析不同压弯量对钢管矫直后残余应力分布状况的影响,并与X-Ray衍射结果对比。模拟结果表明:矫直后钢管轴向、环向残余应力的峰值均随压下量的增大而增大;钢管轴向残余应力内表面为压应力,外表面为拉应力;环向残余应力从内至外逐渐由压应力变为拉应力,且越靠近内、外表面残余应力值越大。模拟实验结果与真实结果吻合。 Based on the research of the straightening process of 2-2-2 seamless steel tube skew roll straightener, based on large deformation elasto-plastic finite element method, ANSYS / LS-DYNA software was used to establish Ф88 mm × 10 mm × 2500 mm seamless steel tube Cold roll straightening numerical model. The effects of different bending amount on the distribution of residual stress after straightening were analyzed by simulation and compared with X-Ray diffraction results. The simulation results show that the peak values ​​of axial residual stress and axial residual stress of straightening steel increase with the increase of the reduction. The axial residual stress of the steel tube is compressive on the inner surface and the tensile stress on the outer surface. From the inside to the outside gradually from the compressive stress into tensile stress, and the closer to the inner and outer surface, the greater the value of residual stress. The simulation results are in good agreement with the real ones.