A local Digital Volume Correlation (DVC) based measurement of displacements and strains of synthetic bone samples under an ex-situ compression using the time-lapsed imaging procedure was performed in the present study. Micro Finite Element (µFE) model was used to simulate the compression of synthetic bone samples with experimental-based (ExBC), and DVC interpolated displacement boundary conditions (IPBC). The obtained µFE nodal displacement data compared with DVC. A good match of displacement patterns and correlation values of R² = 0.85–0.99 and RMSE ≤ 12 µm was observed for the IPBC predicted displacements against DVC displacements. However, the ExBC provided a good correlation of transverse displacements only (U: R² = 0.85–0.99 and V: R² = 0.77–0.99). The average axial displacement of ExBC matched well with DVC, and a qualitative and quantitative understanding of the axial displacement was possible with ExBC. A moderate agreement of axial strain patterns was observed between DVC and IPBC, even though a good agreement on displacement was observed. The ExBC showed a higher axial strain compared to DVC in all samples. The transverse strains varied between the same extreme values for both boundary conditions and within the DVC range.

在本研究中，使用延时成像程序在异位压缩下对合成骨样本的位移和应变进行了基于局部数字体积相关 (DVC) 的测量。微有限元 (μFE) 模型用于模拟基于实验 ( ExBC ) 和 DVC 插值位移边界条件 ( IPBC )的合成骨样品的压缩。获得的 μFE 节点位移数据与 DVC 相比。 观察到IPBC预测位移与 DVC 位移的位移模式和R ² = 0.85–0.99 和 RMSE ≤ 12 µm 的相关值的良好匹配。然而，ExBC仅提供横向位移的良好相关性（U：R ²  = 0.85-0.99 和 V：R ²  = 0.77-0.99）。ExBC的平均轴向位移与 DVC很好地匹配，并且可以使用ExBC对轴向位移进行定性和定量的了解。在 DVC 和IPBC之间观察到轴向应变模式的适度一致性，即使观察到位移的良好一致性。所述ExBC表明所有样品中相比DVC更高的轴向应变。横向应变在两个边界条件和 DVC 范围内的相同极值之间变化。