Novel Isogeometric Analysis Based Automation of High-Fidelity Finite Element Analysis Model Creation from Computer Aided Design
Navy SBIR FY2015.1


Sol No.: Navy SBIR FY2015.1
Topic No.: N151-009
Topic Title: Novel Isogeometric Analysis Based Automation of High-Fidelity Finite Element Analysis Model Creation from Computer Aided Design
Proposal No.: N151-009-0866
Firm: Global Engineering and Materials, Inc.
1 Airport Place, Suite 1
Princeton, New Jersey 08540-1532
Contact: Eugene Fang
Phone: (609) 356-5115
Web Site: www.GEM-Innovation.com
Abstract: Global Engineering and Materials, Inc. (GEM) along with its team member Carnegie Mellon University (CMU) propose to develop an isogeometric finite element model creation and analysis toolkit for Abaqus. The isogeometric analysis toolkit for Abaqus (IGAFA) will be developed by integrating existing computer aided design (CAD) software with a customized Abaqus toolkit for automatic model generation and response and failure prediction using a T-spline based geometry description. Polycube-based parametric mapping methods are used to build volumetric T-splines from B-Reps for CAD models of complex free-form surfaces. An unstructured all-hexahedral mesh is converted to T-spline volumes for their applications in isogeometric analysis. The IGAFA toolkit will feature 1) FEM model generation that retains exactly the original geometric description of the solid structure; 2) re-construction of Abaqus user-defined elements using the control points without remeshing; 3) reliable 3D stress/strain prediction using a user-defined high order function; 4) progressive failure evaluation in composite structures using accurate stress/strain predictors; and 5) visualization of stress concentration zones and performance of design alternations without user intervention. Verification and validation of both 3D stress analysis and failure prediction of a composite structure will be performed based on existing test data collected from team members.
Benefits: The results from this research will have significant benefits and commercial application in the NAVAIR, DoD labs, and aerospace industries. The developed IGAFA toolkit will offer an excellent lead-in to analysis-suitable solid T-spline construction along with a highly accurate isogeometric analysis within Abaqus�_ computational framework. The toolkit can be used to assist designers in performing an optimal structural design without using a conventional loop from CAD to FEM and FEM to CAD. The established automatic link between CAD and the isogeometric FEM greatly benefits the composite patch repair of a complicated helicopter structural component where a patch can be designed offsite based on a CAD file transmitted from a service deport. Finally, the developed T-spline model creator and analyzer can play an important role in the current additive manufacturing and material processing simulation, and integrated computational materials engineering (ICME).

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