Wrinkling, which is primarily caused by insufficient blank holder force, is a significant issue that induces inconsistencies in forming parts, particularly in the deep drawing process. In this article, an investigation of the wrinkling in the deep drawing process of two-layer sheets is performed through an analytical approach, numerical method, and experimental tests. Increasing in the blank holder force, the process is under control by the proposed algorithm. Consequently, it aims to find the minimum required blank holder force to avoid wrinkling. The energy technique is utilized to predict the wrinkling in the analytical approach. Similarly, finite element simulations are implemented to investigate the effect of forming parameters on wrinkling. The experimental tests are performed to verify the analytical and numerical results. The impact of the material properties and stacking sequences (lay-up) on blank holder force and forming force are studied. Results show that the optimum blank holder force is dependent on the material properties, blank geometry, and layer stacking sequences. Also, a good agreement between analytical, numerical, and experimental results is achieved.

起皱主要是由毛坯夹持器力不足引起的，这是一个重要问题，尤其是在深冲过程中，这会导致成形零件不一致。在本文中，通过分析方法，数值方法和实验测试对两层板的深拉过程中的皱纹进行了研究。坯料夹持力的增加，该过程在所提出的算法的控制下。因此，其目的是找到所需的最小毛坯夹持器力，以避免起皱。在分析方法中，利用能量技术来预测起皱。类似地，实施有限元模拟以研究成形参数对起皱的影响。进行实验测试以验证分析结果和数值结果。研究了材料性能和堆垛顺序（堆放）对坯料夹持力和成形力的影响。结果表明，最佳的毛坯夹持器力取决于材料属性，毛坯几何形状和层堆叠顺序。而且，在分析，数值和实验结果之间也取得了很好的一致性。