标题： 基于自适应单位分解中有限元的非局部增强的多尺度断裂模型：实验验证 显示英文标题

标题： A Multiscale Fracture Model using Peridynamic Enrichment of Finite Elements within an Adaptive Partition of Unity: Experimental Validation

摘要： 基于单位分解的方法（PUM）属于区域分解类型，并为多尺度和多物理场数值建模提供了机会。 在PUM全局-局部增强方案[1, 2]中，可以存在不同的物理模型以捕捉多尺度行为。 例如，我们全局考虑经典的线性弹性力学，而在局部区域考虑裂缝发生的位置。 未受损介质的弹性场为包含裂纹尖端的子域上的局部PD模拟提供适当的边界数据，以扩展裂纹路径。 一旦找到更新的裂纹路径，就使用具有适当增强的PUM基函数来更新物体中以及裂纹周围的弹性场。 PD模拟的子域被选择为包含当前裂纹尖端以及将影响裂纹扩展的附近特征。 本文是本系列的第二部分，并将结合的PD/PUM模拟器与[3]中提出的实验结果进行验证。 所展示的结果表明，通过一个随着裂纹尖端移动且自适应选择大小的局部PD子域，我们可以获得实验数据与模拟数据之间的良好一致性。 显示英文摘要

摘要： Partition of unity methods (PUM) are of domain decomposition type and provide the opportunity for multiscale and multiphysics numerical modeling. Within the PUM global-local enrichment scheme [1, 2] different physical models can exist to capture multiscale behavior. For instance, we consider classical linear elasticity globally and local zones where fractures occur. The elastic fields of the undamaged media provide appropriate boundary data for local PD simulations on a subdomain containing the crack tip to grow the crack path. Once the updated crack path is found, the elastic field in the body and surrounding the crack is updated using PUM basis with appropriate enrichment near the crack. The subdomain for the PD simulation is chosen to include the current crack tip as well as nearby features that will influence crack growth. This paper is part II of this series and validates the combined PD/PUM simulator against the experimental results presented in [3]. The presented results show that we can attain good agreement between experimental and simulation data with a local PD subdomain that is moving with the crack tip and adaptively chosen size.