为实现对整体壁板压弯成形中筋条失稳的预测,基于能量法、弹塑性力学和数值解析提出压弯成形过程中筋条临界失稳载荷的求解方法。在设计的压弯模具上进行压弯失稳试验。结果表明,基于本文提出的方法所得的理论临界失稳载荷与试验结果吻合较好。采用本文所提出的方法可以对铝合金高筋整体壁板压弯成形中的筋条失稳问题进行合理地预测。 In order to realize the prediction of the instability of ribs in the whole wall bending, the method of solving the critical load of the ribs in the bending process is put forward based on the energy method, elasto-plasticity mechanics and numerical analysis. Bending buckling test was carried out on the designed bending die. The results show that the theoretical critical load based on the proposed method agrees well with the experimental results. The method proposed in this paper can reasonably predict the instability of tendons in the bending of aluminum alloy tall panels.