Comparison of theoretical and experimental results obtained in the study of thermal stresses in three-layer composite plates

Rolling of Al-Mg-Al tri-layer composite material fabricated by the explosion cladding method was simulated using finite element methods. The rolling temperature was determined based on the flow stresses of AZ31 magnesium alloy and 7075 Al alloy at elevated temperature. The strain distribution in the plates during rolling and effects of the reduction ratio on the separation in the Al/Mg/Al laminate were studied. The simulation agrees with experimental results.

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Computational Models for High-Temperature Multilayered Composite Plates and Shells

Applied Mechanics Reviews ◽

10.1115/1.3119742 ◽

1992 ◽

Vol 45 (10) ◽

pp. 419-446 ◽

Cited By ~ 184

Author(s):

Ahmed K. Noor ◽

W. Scott Burton

Keyword(s):

High Temperature ◽

Computational Models ◽

Thermal Stresses ◽

Three Dimensional ◽

Composite Plates ◽

Effect Of Temperature ◽

Temperature Sensitive ◽

Composite Models ◽

Sandwich Plates And Shells ◽

Plates And Shells

The focus of this review is on the hierarchy of composite models, predictor-corrector procedures, the effect of temperature-dependence of material properties on the response, and the sensitivity of the thermomechanical response to variations in material parameters. The literature reviewed is devoted to the following eight application areas: Heat transfer; thermal stresses; curing, processing and residual stresses; bifurcation buckling; vibrations of heated plates and shells; large deflection and postbuckling problems; and sandwich plates and shells. Extensive numerical results are presented showing the effects of variation in the lamination and geometric parameters of temperature-sensitive angle-ply composite plates on the accuracy of thermal buckling response, and the sensitivity derivatives predicted by nine different modeling approaches (based on two-dimensional theories). The standard of comparison is taken to be the exact three-dimensional thermoelasticity solutions. Some future directions for research on the modeling of high-temperature multilayered composites are outlined.

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Analysis of three-layer composite plates with a new higher-order layerwise formulation

Science and Engineering of Composite Materials ◽

10.1515/secm-2013-0164 ◽

2014 ◽

Vol 21 (3) ◽

pp. 401-404

Author(s):

Dalal A. Maturi ◽

Antonio J.M. Ferreira ◽

Ashraf M. Zenkour ◽

Daoud S. Mashat

Keyword(s):

Composite Plates ◽

Order Theory ◽

Higher Order ◽

Basis Functions ◽

Numerical Accuracy ◽

First Order ◽

The Core ◽

First Order Theory ◽

Layer Composite ◽

Vibration Problems

AbstractIn this paper, we combine a new higher-order layerwise formulation and collocation with radial basis functions for predicting the static deformations and free vibration behavior of three-layer composite plates. The skins are modeled via a first-order theory, while the core is modeled by a cubic expansion with the thickness coordinate. Through numerical experiments, the numerical accuracy of this strong-form technique for static and vibration problems is discussed.

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Delaminations in Composite Plates under Transverse Static Loads — Experimental Results

Journal of Reinforced Plastics and Composites ◽

10.1177/073168449201101101 ◽

1992 ◽

Vol 11 (11) ◽

pp. 1196-1238 ◽

Cited By ~ 7

Author(s):

Scott R. Finn ◽

Yi-Fei He ◽

George S. Springer

Keyword(s):

Composite Plates ◽

Experimental Results ◽

Static Loads

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Progressive Damage Approach to Simulating Low Velocity Impact Response of Plain Weave C/SiC Composites

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.118-120.241 ◽

2010 ◽

Vol 118-120 ◽

pp. 241-245 ◽

Cited By ~ 1

Author(s):

Liu Ding Chen ◽

Xiao Yan Tong ◽

Xiang Zheng ◽

Lei Jiang Yao

Keyword(s):

Constitutive Model ◽

Time History ◽

Composite Plates ◽

Experimental Results ◽

Low Velocity Impact ◽

Progressive Damage ◽

Low Velocity ◽

Velocity Impact ◽

Plain Weave ◽

User Subroutine

Based on progressive damage theory, a 3D laminated model with an orthotropic property in plane was established to simulate the response of plain weave carbon fiber reinforced silicon carbide(C/SiC) ceramic matrix composites(CMC) under low velocity impact(LVI). Intra-layer damage and inter-layer damage were taken into account, respectively. Three scalar damage variables, associated with the degradation of warp modulus, weft modulus and shear modulus, respectively, were proposed to characterize intra-layer damage evolutions. The intra-layer constitutive model was implemented into MSC.Dytran, via its user subroutine EXFAIL1. The potential delamination region was considered as a discrete cohesive zone. Three vector spring elements were placed into every two adjacent nodes to simulate the inter-layer joints. A scalar damage variables, associated with the degradation of the three vector spring elements, were brought forward to characterize the inter-layer damage evolutions. The inter-layer constitutive model was implemented into MSC.Dytran, via its user subroutine EXELAS. Damage area, indentation depth of C/SiC composite plates and time history of impact force were obtained to compare with experimental results. The numerical results show overall good agreement with experimental results.

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Effect of Preheating on the Delamination and Crack Formation in Laser Solid Freeform Fabrication Process

Volume 4: Design and Manufacturing ◽

10.1115/imece2008-67991 ◽

2008 ◽

Author(s):

Masoud Alimardani ◽

Ehsan Toyserkani ◽

Jan Paul Huissoon

Keyword(s):

Thermal Stresses ◽

Crack Formation ◽

Solid Freeform Fabrication ◽

Fabrication Process ◽

Experimental Results ◽

Stress Fields ◽

Thin Wall ◽

Freeform Fabrication ◽

Micro Cracks ◽

Laser Solid Freeform Fabrication

This paper presents a numerical-experimental investigation on the effects of preheating the substrate on the potential delamination and crack formation across the parts fabricated using the Laser Solid Freeform Fabrication (LSFF) process. For this purpose, the temperature distributions and stress fields induced during the multilayer LSFF process, and their correlation with the delamination and crack formation are studied throughout the numerical analysis and the experimental fabrication of a four-layer thin wall of SS304L. A 3D time-dependent numerical approach is used to simulate the LSFF process, and also interpret the experimental results in terms of the temperature distribution and the thermal stress fields. The numerical results show that by preheating the substrate prior to the fabrication process, the thermal stresses throughout the process domain substantially reduce. Accordingly, this can result in the reduction of potential micro-cracks formation across the fabricated part. Preheating also decreases the transient time for the development of a proper melt pool which is an important factor to prevent poor bonding between deposited layers. The experimental results are used to verify the numerical findings as well as the feasibility of preheating on the reduction of the micro-cracks formed throughout the fabrication process.

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On the problems of nonhomogeneous and anisotropic elastic layer-composite plates

Vietnam Journal of Mechanics ◽

10.15625/0866-7136/10175 ◽

1994 ◽

Vol 16 (4) ◽

pp. 1-10

Author(s):

Dao Huy Bich

Keyword(s):

Experimental Data ◽

Elastic Layer ◽

Composite Plates ◽

Homogenization Method ◽

Effective Modulus ◽

Elastic Plates ◽

Dynamic Problems ◽

Layer Composite ◽

Material Behaviors ◽

Anisotropic Elastic

Using the homogenization method problems of nonhomogeneous and anisotropic elastic layer composite plates reduce to the problems of homogeneous and anisotropic elastic plates. The formulae of effective modulus theory determining material behaviors in this cases are given and can be checked by experimental data. Obtained results allow to analyze static and dynamic problems of composite plates by well - know methods.

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