Details

Autor(en) / Beteiligte

• Birner, Matthias
• Diehl, Patrick
• Lipton, Robert
• Schweitzer, Marc Alexander

Titel

A multiscale fracture model using peridynamic enrichment of finite elements within an adaptive partition of unity: Experimental validation

Ist Teil von

• Mechanics research communications, 2024-05, Vol.137, p.104275, Article 104275

Ort / Verlag

Elsevier Ltd

Erscheinungsjahr

2024

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Partition of unity methods (PUM) are of domain decomposition type and provide the opportunity for multiscale and multiphysics numerical modeling. Here, we apply Peridynamic (PD) enrichment to propagate cracks in the PUM global–local enrichment scheme. We apply linear elasticity globally and PD over local zones where fractures occur. The elastic fields provide appropriate boundary data for local PD simulations on a subdomain containing the crack tip to grow the crack. Once the updated crack path is found the elastic field in the body and surrounding the crack is updated using the PUM basis with an elastic field enrichment near the crack. The subdomain for the PD simulation is chosen to include the current crack tip as well as features that influence crack growth. This paper is part II of this series and validates the combined PD/PUM simulator against the experimental results. The results of numerical simulation show that we attain good agreement between experiment and simulation with a local PD subdomain that is moving with the crack tip and adaptively chosen size. •A novel Multiscale Fracture Model using Peridynamic Enrichment of Finite Elements with an Adaptive Partition of Unity•Validation against three experimental data sets.•In addition to the experiments, we validate our hierarchical coupling technique approach with a concurrent coupling approach proposed by Ni et al. using the same experimental data.