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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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Abstract

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
Authors:
AuthorsInstitution or Email of Authors
Alizadeh Sabet, SepidehUNSPECIFIED
Date:July 2011
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:Aircraft Research
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Simulation & Validation
Location: Stuttgart
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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