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Title: A multiscale meshfree approach to modeling damage of Cor-Tuf without fibers using fracture energy experiments
Authors: Sherburn, Jesse A.
Heard, William F.
Williams, Brett A.
Sparks, Paul A.
Keywords: High strength concrete
Continuum damage mechanics
Multiscale modeling
Ultra-high-performance concrete
Constitutive modeling
Fracture energy experiments
Fracture mechanics
Publisher: Geotechnical and Structures Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: Technical Report (Engineer Research and Development Center (U.S.)) ; no. ERDC/GSL TR-19-12
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.
Description: Technical Report
Gov't Doc #: ERDC/GSL TR-19-12
Rights: Approved for Public Release; Distribution is Unlimited
Size: 39 pages / 6.889 Mb
Appears in Collections:Technical Report

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