This work aims to test a meshless method, the Radial Point Interpolation Method (RPIM), in a multi material structure where the composite substrates are treated as an anisotropic material, and the adhesive as an isotropic material. The strength prediction is accomplished by the continuum mechanics-based Critical Longitudinal Strain (CLS) criterion. A stress and strain analysis showed that the RPIM can be used successfully in this type of structure. The strength predictions were accurate for the most brittle adhesive, Araldite® AV138, but the CLS criterion showed some limitations for the other adhesives tested, the moderately ductile Araldite® 2015 and the very ductile Sikaforce® 7888. It was also shown that the CLS criterion is discretization independent.

这项工作的目的是在多材料结构中测试无网格方法，即径向点插值方法（RPIM），在该结构中，复合基板被视为各向异性材料，而粘合剂被视为各向同性材料。强度预测是通过基于连续力学的临界纵向应变（CLS）准则来完成的。应力和应变分析表明，RPIM可以成功用于这种类型的结构。对于最脆的粘合剂Araldite®AV138，强度预测是准确的，但CLS准则显示了其他受测试的粘合剂（适度延展的Araldite®2015和非常易延展的Sikaforce®7888）的某些局限性。还显示了CLS准则独立于离散化。