Campus Units
Aerospace Engineering, Mechanical Engineering, Center for Nondestructive Evaluation (CNDE)
Document Type
Conference Proceeding
Conference
American Society for Composites: Thirty-third Technical Conference
Publication Version
Published Version
Publication Date
2018
Journal or Book Title
Proceedings of the American Society for Composites: Thirty-third Technical Conference
DOI
10.12783/asc33/26002
Conference Title
American Society for Composites: Thirty-third Technical Conference
Conference Date
September 24-26, 2018
City
Seattle, WA
Abstract
Finite element models of composite structures are generally shell-based and modeled at the laminate level. More detailed layer-by-layer lamina-level models are sometimes needed for representing joints or for modeling defect growth processes. We describe a method and toolkit for automating the creation and insertion of layerby-layer finite element sub-models of composite laminate. We focus in particular on representing damage captured from nondestructive evaluation (NDE) measurements. The method is based on scripting existing simulation and solid modeling tools (ABAQUS and ACIS). It works even on complicated, curved CAD models. The submodel location is identified by the intersection of a cylinder with the structure. We then execute a series of instructions to generate a new shell with the submodel region removed, generate the layer-by-layer submodel, and bond together the layers and models with desired boundary conditions and defects. The instructions represent the steps of lamination and bonding for creating the composite. The output of the method includes CAD models of the new shell and each lamina within the submodel, and a Python script for ABAQUS that will load the CAD models, bond them together, and apply the specified boundary conditions.
Copyright Owner
American Society for Composites
Copyright Date
2018
Language
en
File Format
application/pdf
Recommended Citation
Holland, Stephen D.; Krishnamurthy, Adarsh; Bingol, Onur; and Grandin, Robert, "Automated Construction and Insertion of Layer-by Layer Finite Element Sub-Models of Damaged Composites" (2018). Center for Nondestructive Evaluation Conference Papers, Posters and Presentations. 126.
https://lib.dr.iastate.edu/cnde_conf/126
Comments
This proceeding appeared in Holland, Stephen D., Adarsh Krishnamurthy, Onur Bingol, and Robert Grandin. "Automated Construction and Insertion of Layer-by-Layer Finite Element Sub-Models of Damaged Composites." In Proceedings of the American Society for Composites—Thirty-third Technical Conference (2018). Lancaster, PA: DEStech Publications, Inc. DOI: 10.12783/asc33/26002. Posted with permission.