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综述了在镦粗工艺新理论与新技术方面的研究成果 ,完善与发展了塑性力学镦粗工艺理论。提出圆柱体平板间镦粗时的刚塑性力学模型的拉应力理论和静水应力力学模型的切应力理论 ,并经定性物理模拟、光塑试验及数值模拟证明 ;提出广义滑移线法 ,将经典滑移线理论拓展到能求解所有2维问题和轴对称塑性变形问题 ;发展了主应力法 ,提出力学分块法
The research results of new upsetting technology and new technology are reviewed, and the plastic mechanics upsetting technology is improved and developed. The tensile stress theory of the rigid-plastic mechanical model and the shear stress theory of the hydrostatic mechanical model are proposed when the upsetting cylindrical plates are upset. The results of the qualitative physical simulation, the optical plastic test and the numerical simulation prove that the generalized slip line method, The slip-line theory has been extended to solve all 2-D problems and axisymmetric plastic deformation problems. The principal stress method has been developed, and the mechanical block method