Control of macrostructure in deformation processing of metal/metal laminates

Date

2005-01-01

Author

Yazar, O
Ediz, T
Öztürk, Tayfur

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

110
views

0
downloads

A study was carried out on model systems deformed under plane-strain. Finite element analysis was used to examine continuously and discontinuously layered models, in which the reinforcement to matrix flow stress ratio, r(s), was varied within the range 1.5 < r(s) < 10. It was found that, for homogeneous refinement of continuously reinforced laminates, the critical value of r(s) is approximately 2. This value, valid for the ideal plastic case, can be increased to a maximum value of r(s) approximate to5 with work hardening. For discontinuously layered systems, similar results were found. It is therefore concluded that macrostructural control is possible in metal/ metal svstems either in the form of homogeneous refinement of the continuous structures or in the form of structures with thin, long, closely spaced reinforcements, provided that the flow strength of the reinforcement is not more than five times that of the matrix. (C) 2004 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

Subject Keywords

Metallic Composites, Finite Element Modelling, Structural Refinement, Multiple Necking, Multiple Rupture

URI

https://hdl.handle.net/11511/31341

Journal

ACTA MATERIALIA

DOI

https://doi.org/10.1016/j.actamat.2004.09.033

Collections

Graduate School of Natural and Applied Sciences, Article

Suggestions

OpenMETU
Core

Simulation of Drop-Weight Impact Test on Composite Laminates using Finite Element Method Bozkurt, Mirac Onur; Parnas, Levend; Çöker, Demirkan (Elsevier BV; 2019-01-01) This study presents the simulation of standard drop-weight impact test on a [0/90/0]s composite laminate. For this purpose, a three-dimensional virtual test setup is developed in ABAQUS/Explicit finite element tool. Hemispherical impactor and specimen fixture are modeled as rigid bodies. Composite plate is modeled as a 3-D deformable solid and discretized using a biased mesh for computational efficiency. For simulation of ply damage in the composite laminate, a continuum damage mechanics based damage model ...
Robust Estimation of UAV Dynamics in the Presence of Measurement Faults Hacızade, Cengiz; Söken, Halil Ersin (American Society of Civil Engineers (ASCE), 2012-01-01) This study introduces a robust Kalman filter (RKF) with a filter-gain correction for cases of measurement malfunctions. Using defined variables called measurement-noise scale factors, the faulty measurements are taken into consideration with a small weight and the estimations are corrected without affecting the characteristics of the accurate ones. In this study, RKF algorithms with single and multiple scale factors are proposed and applied for the state estimation process of an unmanned aerial vehicle (UAV...
Simulation of Drop-Weight Impact Test on Composite Laminates using Finite Element Method Bozkurt, Mirac Onur; Parnas, Kemal Levend; Çöker, Demirkan (Elsevier, 2019-01-01) This study presents the simulation of standard drop-weight impact test on a [0/90/0]s composite laminate. For this purpose, a three-dimensional virtual test setup is developed in ABAQUS/Explicit finite element tool. Hemispherical impactor and specimen fixture are modeled as rigid bodies. Composite plate is modeled as a 3-D deformable solid and discretized using a biased mesh for computational efficiency. For simulation of ply damage in the composite laminate, a continuum damage mechanics based damage model ...
Numerical Modeling of Backfilling Process around Monopiles Baykal, Cüneyt; Fuhrman, David R; Jacobsen, Niels G; Fredsoe, Jorgen (2014-06-20) This study presents a three-dimensional (3D) numerical modeling study on the backfilling process around monopiles. The numerical model utilized in the study is based on that given by Jacobsen (2011). It is composed of two main modules. The first module is the hydrodynamic model where the fluid flow conditions around the structure and near the bed are solved. The second module is the morphologic model where the sediment transport rates over the bed and around the structure are obtained and used in updating b...
Ideal tooth profile modifications for improving nonlinear dynamic response of planetary gear trains Ozturk, Veysel Yalin; Ciğeroğlu, Ender; Özgüven, Hasan Nevzat (2021-05-01) The ultimate goal in this study is to investigate the effects of tooth profile modifications (TPMs) on PGTs by performing parametric studies. For this purpose, firstly a nonlinear planetary gear dynamics model with time-varying stiffness is introduced. A time-varying stiffness function is included into the analysis by using loaded static transmission error (LSTE) for sun-planet and ring-planet gear meshes. In this analysis the computationally calculated values of LSTE are used; however, if an experimentally...

Citation Formats

O. Yazar, T. Ediz, and T. Öztürk, “Control of macrostructure in deformation processing of metal/metal laminates,” ACTA MATERIALIA, pp. 375–381, 2005, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/31341.