Investigation of multi-scale modeling strategies to simulate high velocity impact damage
Alizadeh Sabet, Sepideh (2011) Investigation of multi-scale modeling strategies to simulate high velocity impact damage. Master's. DLR-Interner Bericht. DLR-IB 435-2011/27, 109 S.
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The presentthesis deals with setting up computationally efficient muli-scale finite element (FE) models for simulation of impact problems in industrial applications. In particular, the main focus is to introduce and investigate possible mesh-matching techniques in the FE explicit code PAM-CRASH to be used at the boundaries of non-conform meshes. Two methods, namely multi-point constraint and a contact-type tied interface are investigated in a low-complexity model under quasi-static loading. Due to superiority of tied interface method in sense of convenience of application, this method is selected to be investigated further in multi-scale simulations of low-velocity impact of hard object on a CFRP laminated plate and high velocity impact of a soft body on a C-frame stiffened composaite panel. As the outcome of teh study, tied interface method in multi-scale FE-models proved to reproduce sufficiently accurate global responses as well as delamination in the impact zone compared to test data.
|Document Type:||Monograph (DLR-Interner Bericht, Master's)|
|Title:||Investigation of multi-scale modeling strategies to simulate high velocity impact damage|
|Number of Pages:||109|
|Keywords:||multi-scale modelling, impact simulation, high velocity impact|
|HGF - Research field:||Aeronautics, Space and Transport|
|HGF - Program:||Aeronautics|
|HGF - Program Themes:||L AR - Aircraft Research|
|DLR - Research area:||Aeronautics|
|DLR - Program:||L AR - Aircraft Research|
|DLR - Research theme (Project):||L - Simulation & Validation|
|Institutes and Institutions:||Institute of Structures and Design > Structural Integrity|
|Deposited By:||Nathalie Toso|
|Deposited On:||06 Dec 2011 23:35|
|Last Modified:||06 Dec 2011 23:35|
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