Please use this identifier to cite or link to this item: https://hdl.handle.net/11681/41963
Title: Penetration modeling of ultra‐high performance concrete using multiscale meshfree methods
Authors: Sparks, Paul A.
Sherburn, Jesse A.
Heard, William F.
Williams, Brett A.
Keywords: Constitutive modeling
Multiscale modeling
Penetration modeling
Reproducing kernel particle method
Ultra‐high performance concrete
Publisher: Geotechnical and Structures Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: Miscellaneous Paper (Engineer Research and Development Center (U.S.)) ; no. ERDC/GSL MP-21-6
Is Version Of: Sparks, Paul A., Jesse A. Sherburn, William F. Heard, and Brett A. Williams. "Penetration modeling of ultra‐high performance concrete using multiscale meshfree methods." International Journal for Numerical and Analytical Methods in Geomechanics 43, no. 14 (2019): 2328-2351. https://doi.org/10.1002/nag.2983
Abstract: Terminal ballistics of concrete is of extreme importance to the military and civil communities. Over the past few decades, ultra‐high performance concrete (UHPC) has been developed for various applications in the design of protective structures because UHPC has an enhanced ballistic resistance over conventional strength concrete. Developing predictive numerical models of UHPC subjected to penetration is critical in understanding the material's enhanced performance. This study employs the advanced fundamental concrete (AFC) model, and it runs inside the reproducing kernel particle method (RKPM)‐based code known as the nonlinear meshfree analysis program (NMAP). NMAP is advantageous for modeling impact and penetration problems that exhibit extreme deformation and material fragmentation. A comprehensive experimental study was conducted to characterize the UHPC. The investigation consisted of fracture toughness testing, the utilization of nondestructive microcomputed tomography analysis, and projectile penetration shots on the UHPC targets. To improve the accuracy of the model, a new scaled damage evolution law (SDEL) is employed within the microcrack informed damage model. During the homogenized macroscopic calculation, the corresponding microscopic cell needs to be dimensionally equivalent to the mesh dimension when the partial differential equation becomes ill posed and strain softening ensues. Results of numerical investigations will be compared with results of penetration experiments.
Description: Miscellaneous Paper
Gov't Doc #: ERDC/GSL MP-21-6
Rights: Approved for Public Release; Distribution is Unlimited
URI: https://hdl.handle.net/11681/41963
http://dx.doi.org/10.21079/11681/41963
Size: 29 pages / 3.16 MB
Types of Materials: PDF/A
Appears in Collections:Miscellaneous Paper

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