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Investigation of Mechanical Properties of the Plain Weave Fabric Composites with Basalt and Carbon F

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Tutor: WangBaoLin
School: Harbin Institute of Technology
Course: Mechanics
Keywords: hybrid fiber fabrics,carbon fiber,basalt fiber,finite element,mechanical propert
CLC: TB332
Type: Master's thesis
Year:  2013
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Abstract:
With the further development of research on fiber-reinforced compositematerials, its research methods, depth and range of applications are slightlydifferent, but most are limited to single fiber-reinforced composite materials.There are limitations of single fiber-reinforced composite materials. In orderto overcome these limitations, and improve the availability of designing ofcomposite materials and value-added of products, hybrid fiber-reinforcedcomposite materials came into being, and is widely used in aerospace,shipbuilding, railway, automotive and other industrial fields, known as theleading direction of composite materials in the21st century.The paper took basalt fiber and carbon fiber mixed plain weave fabriccomposite materials as the object of study, and analyzed the basic mechanicalproperties of the mixed fabric. According to the weaving requirements andperformance characteristics of basalt fiber and carbon fiber, are designed andprepared five kinds of structures of different carbon fiber/basalt fiber hybridfabric, carried out the characterization analysis of static mechanicalperformance of different fabric composite material, and tested fabriccomposite materials¡¯ performance properties of three-point bending andinterlaminar shearing. The flexural modulus, flexural strength, intensity ofinterlaminar shearing and the maximum load of destruction of fabriccomposite materials in different mixed modes were obtained. Through theanalysis of mechanical properties of different hybrid woven structures, thebasalt/carbon hybrid and the structure of its composite material weredetermined.Based on the typical structure of plain weave fabric laminated compositematerial, we used SolidWorks, the CAD software to construct the geometricmodel of the representative unit (RVE), and apply finite element mic-romechanics method in constructing the prediction model fit for the basicmechanical properties of fabric laminated composite materials, Calculate theequivalent elastic modulus of the single plate of different promiscuous modes,and concluded that with the elastic modulus is showing a tendency to increase with the increase of the content of carbon fiber, and provided valid data forFinite Element Analysis. Through simulating macro-bending mechanicalperformance of fabric composite materials with ABAQUS, the finite elementanalysis software, and compared with experimental results. We got thesimulated stress-strain curve. It fitted well with the actual-measuredstress-strain curvel in the linear phase, compared with the results ofexperiments, the constructed meso-mechanical model satisfies the requirement-s of mixed fabric¡¯s structure design.Through ABAQUS the dynamic simulation of low velocity impact ofmixed fabric composite materials, the impact force-displacement curve wasobtained, and was more consistent with the experimental results. during theprocess of the impact, plain weave fabric (BF/CF=1:1) composite materialexhibited good impact toughness in the process of resisting impacts, and canbe used as the first choice of material preparation.
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