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Verification of Finite Element Model of Deformation of Laboratory Sample for Mechanical Tests by Method of Digital Images Correlation

机译：用数字图像相关方法验证实验室样品变形的有限元模型

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The paper deals with the experimental-calculated analysis of the deformed state of a prismatic-type sample for mechanical laboratory tests, which is designed to evaluate the strength of a material under a biaxial stress state. A description of the deformation scheme of this sample is given. The distribution of deformation fields of the prismatic sample surface studied is obtained by processing the speckle images of the onboard experiment by the method of correlation of digital images in the Vic-3D system, at the stage of elastic deformation. Their comparison with the results of numerical simulation by the finite element method at control points of the surface of the deformed sample is performed. The discrepancy between the results of the full-scale experiment and the given numerical simulation at the control points did not exceed 14%. Conclusions are formulated for the subsequent use of the results obtained.
机译：本文涉及对机械实验室试验的棱镜型样品的变形状态进行实验计算的分析，其旨在评估双轴应力状态下的材料的强度。给出了该样品的变形方案的描述。通过在弹性变形的阶段处理船上实验的方法来获得研究的棱镜样品表面的变形场的分布，在VIC-3D系统中的数字图像的相关方法中获得。进行了通过在变形样品的表面的控制点处通过有限元方法对数值模拟结果的比较。全尺度实验结果与控制点的给定数值模拟之间的差异不超过14％。结论被配制用于随后使用得到的结果。

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