2D Heterogeneous Metamaterials: Design Framework

This study considered anisotropic and asymmetric units, whose stiffness tensors were calculated using energy-based homogenization (1). For two-dimensional (2D) designs, six independent, C11, C12, C13, C22, C23, C33 (in Voigt notation) were used. We built here a small database with precomputed properties and different unit cell microstructures. Each unit cell was discretized into a 50 × 50 plane stress Q4 element.<br>本研究考虑了各向异性且非对称的单元，其刚度张量采用基于能量的均匀化方法（1）进行计算。针对二维（2D）设计，采用六个独立的刚度分量：C11、C12、C13、C22、C23、C33（采用沃伊格符号（Voigt notation）表示）。本研究构建了一个小型数据库，其中包含预计算得到的材料属性与多种不同的单元胞微观结构。每个单元胞均被离散为50×50规模的平面应力Q4单元。