In this work, the small lateral-compression testing based on energy equivalent (SLT-EE) method is put forward to determine the stress–strain curves of materials utilizing small disk specimens. Numerical simulations of small lateral-compression testing with imaginary materials are conducted to examine the validity of the SLT-EE method. The results demonstrate that the stress–strain curves determined by the SLT-EE method coincide with the curves input by finite element analysis. In order to predict the stress–strain curves of materials with different dimensions, a modified SLT-EE method is successfully proposed by introducing a correction factor f. Finally, the small disk compression experiments of Q345B, 304, 7075 and 6061 are performed. The stress–strain curves of the four materials predicted by the SLT-EE method show agreement with the tension results. Furthermore, the mechanical properties of in-service hollow components are also determined utilizing the same method successfully.

在这项工作中，提出了基于能量当量的小型横向压缩试验（SLT-EE），以确定使用小型圆盘试样的材料的应力-应变曲线。进行了用假想材料进行的小型横向压缩试验的数值模拟，以检验SLT-EE方法的有效性。结果表明，通过SLT-EE方法确定的应力-应变曲线与通过有限元分析输入的曲线一致。为了预测不同尺寸材料的应力-应变曲线，通过引入校正因子f成功地提出了一种改进的SLT-EE方法。。最后，进行Q345B，304、7075和6061的小磁盘压缩实验。用SLT-EE方法预测的四种材料的应力-应变曲线与拉伸结果吻合。此外，使用相同方法也可以成功确定在役中空部件的机械性能。