Dynamic methods for identifying a model of a nonlinearly elastic deformable body are considered. By the effective phase velocities of longitudinal and transverse waves propagating along and across the axis of the compressed bar, it is possible to determine five elastic constants of the second and third orders included in the model relations. Calculation formulae are obtained and an example of determining the dependence of phase velocities on the preliminary deformation for polyamide 6 is given. The influence of preliminary deformations on polar diagrams of wave velocities is investigated.

中文翻译：

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动态实验中非线性弹性模型的识别

考虑了用于识别非线性弹性可变形体模型的动态方法。通过沿和穿过压缩杆轴传播的纵波和横波的有效相速度，可以确定模型关系中包含的五个二阶和三阶弹性常数。获得了计算公式，并给出了确定相速度对聚酰胺 6 预变形的依赖性的示例。研究了初步变形对波速极坐标图的影响。