Macroscopic stress-strain dataset of a hyperelastic heterogeneous material

The dataset used in "Surrogate computational homogenization enhanced by partition-of-unity RBF Interpolation with decision trees, Yosuke Yamanaka, Norio Hirayama, Kenjiro Terada"
The data is generated by numerical simulations referred to as "Numerical material tests" for the unit cell of microscopic structures.
mesh.vtk: FE mesh of the unit cell.
dataset.txt: dataset of macroscopic stress-strain relationships obtained by performing a series of NMTs
- Each line corresponds a data point.
- The columns correspond to $\tilde{U}_{11}-1$, $\tilde{U}_{22}-1$, $\tilde{U}_{33}-1$, $\tilde{U}_{12}$, $\tilde{U}_{23}$, $\tilde{U}_{31}$, $\tilde{S}_{11}$, $\tilde{S}_{22}$, $\tilde{S}_{3}$, $\tilde{S}_{12}$, $\tilde{S}_{23}$, $\tilde{S}_{31}$.
dataset.bin: Binary version of dataset.txt

本数据集出自论文《基于决策树增强单位分解径向基函数（Radial Basis Function, RBF）插值的替代计算均匀化》，作者为山中阳介（Yosuke Yamanaka）、平山纪夫（Norio Hirayama）、寺田健次郎（Kenjiro Terada）。
该数据集通过针对微观结构单胞的数值模拟生成，此类模拟被命名为“数值材料试验（Numerical material tests, NMTs）”。
mesh.vtk：单胞的有限元（Finite Element, FE）网格。
dataset.txt：通过执行一系列数值材料试验得到的宏观应力-应变关系数据集。
- 每行对应一个数据点。
- 各列依次对应 $ ilde{U}_{11}-1$、$ ilde{U}_{22}-1$、$ ilde{U}_{33}-1$、$ ilde{U}_{12}$、$ ilde{U}_{23}$、$ ilde{U}_{31}$、$ ilde{S}_{11}$、$ ilde{S}_{22}$、$ ilde{S}_{3}$、$ ilde{S}_{12}$、$ ilde{S}_{23}$、$ ilde{S}_{31}$。
dataset.bin：dataset.txt 的二进制版本。