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Analysis of linear elasticity and no...

Goyal, Deepak.

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Analysis of linear elasticity and non-linearity due to plasticity and material damage in woven and biaxial braided composites.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Analysis of linear elasticity and non-linearity due to plasticity and material damage in woven and biaxial braided composites./
作者:	Goyal, Deepak.
面頁冊數:	224 p.
附註:	Adviser: John D. Whitcomb.
Contained By:	Dissertation Abstracts International69-01B.
標題:	Textile Technology. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3296388
ISBN:	9780549416289

Analysis of linear elasticity and non-linearity due to plasticity and material damage in woven and biaxial braided composites.
Goyal, Deepak.

Analysis of linear elasticity and non-linearity due to plasticity and material damage in woven and biaxial braided composites. - 224 p.

Adviser: John D. Whitcomb.

Thesis (Ph.D.)--Texas A&M University, 2007.

Textile composites have a wide variety of applications in the aerospace, sports, automobile, marine and medical industries. Due to the availability of a variety of textile architectures and numerous parameters associated with each, optimal design through extensive experimental testing is not practical. Predictive tools are needed to perform virtual experiments of various options. The focus of this research is to develop a better understanding of linear elastic response, plasticity and material damage induced nonlinear behavior and mechanics of load flow in textile composites.

ISBN: 9780549416289Subjects--Topical Terms:

1020710
Textile Technology.

Analysis of linear elasticity and non-linearity due to plasticity and material damage in woven and biaxial braided composites.
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100 1 $a Goyal, Deepak. $3 1275821
245 1 0 $a Analysis of linear elasticity and non-linearity due to plasticity and material damage in woven and biaxial braided composites.
300 $a 224 p.
500 $a Adviser: John D. Whitcomb.
500 $a Source: Dissertation Abstracts International, Volume: 69-01, Section: B, page: 0452.
502 $a Thesis (Ph.D.)--Texas A&M University, 2007.
520 $a Textile composites have a wide variety of applications in the aerospace, sports, automobile, marine and medical industries. Due to the availability of a variety of textile architectures and numerous parameters associated with each, optimal design through extensive experimental testing is not practical. Predictive tools are needed to perform virtual experiments of various options. The focus of this research is to develop a better understanding of linear elastic response, plasticity and material damage induced nonlinear behavior and mechanics of load flow in textile composites.
520 $a Textile composites exhibit multiple scales of complexity. The various textile behaviors are analyzed using a two-scale finite element modeling. A framework to allow use of a wide variety of damage initiation and growth models is proposed. Plasticity induced non-linear behavior of 2x2 braided composites is investigated using a modeling approach based on Hill's yield function for orthotropic materials. The mechanics of load flow in textile composites is demonstrated using special non-standard postprocessing techniques that not only highlight the important details, but also transform the extensive amount of output data into comprehensible modes of behavior.
520 $a The investigations show that the damage models differ from each other in terms of amount of degradation as well as the properties to be degraded under a particular failure mode. When compared with experimental data, predictions of some models match well for glass/epoxy composite whereas other's match well for carbon/epoxy composites. However, all the models predicted very similar response when damage factors were made similar, which shows that the magnitude of damage factors are very important.
520 $a Full 3D as well as equivalent tape laminate predictions lie within the range of the experimental data for a wide variety of braided composites with different material systems, which validated the plasticity analysis. Conclusions about the effect of fiber type on the degree of plasticity induced non-linearity in a +/-25° braid depend on the measure of non-linearity.
520 $a Investigations about the mechanics of load flow in textile composites bring new insights about the textile behavior. For example, the reasons for existence of transverse shear stress under uni-axial loading and occurrence of stress concentrations at certain locations were explained.
590 $a School code: 0803.
650 4 $a Textile Technology. $3 1020710
650 4 $a Applied Mechanics. $3 1018410
650 4 $a Engineering, Aerospace. $3 1018395
650 4 $a Engineering, Mechanical. $3 783786
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690 $a 0538
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710 2 $a Texas A&M University. $3 718977
773 0 $t Dissertation Abstracts International $g 69-01B.
790 $a 0803
790 1 0 $a Whitcomb, John D., $e advisor
791 $a Ph.D.
792 $a 2007
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