本文用金属圆膜试验获得了紫铜、黄铜、软铝、合金铝、低碳钢及不锈钢等六种国产材料在二向均匀拉应力状态下的塑性硬化规律.通过对薄壁结构塑性失稳的计算分析结果表明,失稳应力,失稳厚度及失稳时的厚向应变的理论计算值与实验值基本符合,从而说明用金属圆膜试验确定金属材料塑性硬化规律是简单易行的方法且具有一定的精度. In this paper, the plastic hardening law of six domestic materials, including red copper, brass, soft aluminum, aluminum alloy, mild steel and stainless steel under uniform tensile stress in two directions, The calculation and analysis results show that the theoretical calculated values ​​of the instability thickness, the thickness of instability and the thickness strain in the case of destabilization are in good agreement with the experimental values, which shows that it is a simple and easy method to determine the plastic hardening law of metallic materials by the metal round film test And with a certain accuracy.