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Logo: International Research and Training Group IRTG1627/Leibniz Universität Hannover
Logo Leibniz Universität Hannover
Logo: International Research and Training Group IRTG1627/Leibniz Universität Hannover
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Seminar: Computational Methods: Indispensable Tools for Engineering Analysis and Design

The Graduate School MUSiC with the Sofja Kovalevskaja – Research Group is inviting for a lecture on:

“Computational Methods: Indispensable Tools for Engineering Analysis and Design”

 

January 31, 2019 (15.00)

Graduiertenschule MUSiC, Appelstr. 11A

Seminar room A 501, 5st floor

 

G. R. Liu

Professor and Ohio Eminent Scholar
Aerospace Engineering and Engineering Mechanics
University of Cincinnati, Cincinnati, OH 45221-0070

 


This talk provides an overview of computational methods and its applications to the analysis and design of engineering systems. The focus will be on general formulations of meshfree and element-based methods established using strong, week and weakened weak (W2) formulations. Studies on the comparisons of W2 formulations with the strong and weak formulations will be presented. We will present a family of W2 models known as S-PIM and S-FEM developed in the recent years. Properties of this class of methods important for automations in computation will be discussed including, spatial and temporal stability and convergence, softening effects induced by various types of smoothing domains, upper bound properties leading to certified solutions real-time computational models, and insensitivity to the quality of mesh allowing effective uses of triangular/tetrahedral meshes, which are best suited for adaptive analyses. For CFD problems, the gradient smoothing methods (GSM) will be briefly introduced. Application examples will also be presented for simulating engineered material behavior at various extreme situations, fluid structural interaction problems (helicopter blades interacting with subsonic airflows, flying birds, etc.), cracks in engineering aerospace structural systems, crystal plasticity for metallic polycrystalline used in jet engines, integrity assessment of systems via inverse analysis with real-time computation., and additive manufacturing processes.

 

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