A Multiscale Meshfree Approach to Modeling Damage of Cor-Tuf without Fibers Using Fracture Energy Experiments
Abstract
Many continuum damage mechanics models for cementitious materials are typically phenomenological in design. Recent work has shown that a physics-based multiscale approach to modeling damage is efficient and effective. In order to use a multiscale approach, appropriate experimental data are necessary to model the microscale calculations that will then inform the continuum-scale calculations. This work uses the multiscale approach and experimentally determines the parameters necessary to model the microscale calculations. Notched three-point beam experiments were performed to determine the fracture energy of the ultra-high performance concrete known as Cor-Tuf. The fracture energy is then used by a simplified microscale calculation to determine a physics-based damage evolution equation that can be used in continuum-scale calculations. A meshfree method is used to show the usefulness of the newly determined damage evolution equation. Both a quasi-static application and a dynamic application are shown as examples.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 08, 2019
- Accession Number
- AD1070537
Entities
People
- Brett A. Williams
- Jesse A. Sherburn
- Paul Sparks
- William F. Heard
Organizations
- Engineer Research and Development Center