Erichsen number of vibration damping laminated steel sheet is larger than that of the steel sheet as constrained layer, and less than that of the steel sheet having same thichness.

• 层压减振复合钢板的杯突值大于约束层钢板的杯突值，小于与该复合板具有同等厚度的纯钢板的杯突值，这归因于高聚物夹层的影响。