A complex-variable cohesive finite element subroutine to enable efficient determination of interfacial cohesive material parameters

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dc.contributor.authorRamirez-Tamayo, Daniel
dc.contributor.authorSoulami, Ayoub
dc.contributor.authorGupta, Varun
dc.contributor.authorRestrepo, David
dc.contributor.authorMontoya, Arturo
dc.contributor.authorMillwater, Harry
dc.date.accessioned2023-05-23T18:22:27Z
dc.date.available2023-05-23T18:22:27Z
dc.date.issued2021-04-15
dc.description.abstractA new complex-variable version of a cohesive element is presented that provides highly accurate first order derivatives of the nodal displacements with respect to the cohesive fracture parameters. These sensitivities are provided as a byproduct of the analysis using the complex Taylor series expansion method. This information is useful for inversely determining the cohesive fracture parameters from experimental or synthetic data using a finite element-based approach. In particular, the PPR cohesive element (Park et al., 2009), was extended using complex variables as a user element for the well-known commercial finite element program, Abaqus. The source code for the element is provided as an educational resource. The advantage of having accurate first order derivatives on both accuracy and efficiency is demonstrated through numerical examples.en_US
dc.description.departmentMechanical Engineeringen_US
dc.description.departmentCivil and Environmental Engineering, and Construction Management
dc.description.sponsorshipPacific Northwest National Laboratories, USAen_US
dc.identifier.citationRamirez-Tamayo, D., Soulami, A., Gupta, V., Restrepo, D., Montoya, A., & Millwater, H. (2021). A complex-variable cohesive finite element subroutine to enable efficient determination of interfacial cohesive material parameters. Engineering Fracture Mechanics, 247, 107638. doi:https://doi.org/10.1016/j.engfracmech.2021.107638en_US
dc.identifier.issn1873-7315
dc.identifier.otherhttps://doi.org/10.1016/j.engfracmech.2021.107638
dc.identifier.urihttps://hdl.handle.net/20.500.12588/1852
dc.language.isoen_USen_US
dc.publisherElsevieren_US
dc.relation.ispartofseriesEngineering Fracture Mechanics;247
dc.rightsAttribution 3.0 United States*
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/us/*
dc.subjectcomplex-variable finite element methoden_US
dc.subjectcomplex Taylor series expansionen_US
dc.subjectinverse determination of material parametersen_US
dc.subjectUELen_US
dc.subjectautomatic differentiationen_US
dc.titleA complex-variable cohesive finite element subroutine to enable efficient determination of interfacial cohesive material parametersen_US
dc.typeArticleen_US

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