東華大學圖書館 |

語系: 繁體中文

說明(常見問題)

回圖書館首頁

手機版館藏查詢

登入

回首頁

切換: 標籤 | MARC模式 | ISBD

FindBook

Google Book

Amazon

博客來

Development of three-dimensional spherical discontinuous deformation analysis for granular materials.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Development of three-dimensional spherical discontinuous deformation analysis for granular materials./
作者:	Zhao, Shilong.
面頁冊數:	1 online resource (173 pages)
附註:	Source: Dissertations Abstracts International, Volume: 62-05, Section: B.
Contained By:	Dissertations Abstracts International62-05B.
標題:	Civil engineering. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9974539click for full text (PQDT)
ISBN:	9780599800496

Development of three-dimensional spherical discontinuous deformation analysis for granular materials.
Zhao, Shilong.

Development of three-dimensional spherical discontinuous deformation analysis for granular materials. - 1 online resource (173 pages)

Source: Dissertations Abstracts International, Volume: 62-05, Section: B.

Thesis (Ph.D.)--North Carolina State University, 2000.

Includes bibliographical references

This dissertation presents a new numerical method-three-dimensional spherical discontinuous deformation analysis model (DDA). This three-dimensional model maintains the characteristics of the original two-dimensional DDA and uses spherical elements to simulate the mechanical properties of granular materials under different loading conditions. A computer program was developed to handle a combination of continuous and discontinuous large displacement problems, as well as large deformation and failure analysis, under external loads and boundary conditions. Particulate materials are ubiquitous in nature and are encountered in all spheres of engineering. The mechanical behavior of these materials is, therefore, of utmost import to a number of engineering problems, for example, deformation and damage of soils and concrete, storage of grains and food-stuffs, flow processes in handling of particulate materials, ice floes, and materials processing. Past several decades have witnessed sustained efforts aimed at understanding the behavior of particulate materials. These efforts have resulted in the development of a variety of theoretical approaches and complementary computational and experimental techniques. The theoretical approaches for particulate materials have ranged from micro mechanical methods, with the consideration of particle interactions, to conventional continuum mechanics methods. Similarly, computer simulation and experimental methods have been developed to study phenomena ranging from particle-level to bulk behavior. A brief review of DDA's concepts is presented and differences between DDA and other numerical methods are discussed. The detailed analysis of 3D spherical DDA formulations is presented. The analytical solutions for the simple physical cases are used to verify the ability and accuracy of 3D spherical DDA model. The results are satisfactory. Numerical simulations are performed to show the capabilities of this model to handle discontinuous contact problem under large displacements and deformations. The first application is an analysis of five-ball structure stability. The second example is a blasting simulation. The third simulation is a random packing process. A pile driving process is performed in Example 4. The last case studies the foundation settlement under the different loading conditions. Settlement study with a large amount of elements is also included. These numerical simulations demonstrate the capabilities of this DDA model for exploring the mechanical behaviors of granular materials under three-dimensional loading conditions.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2023

Mode of access: World Wide Web

ISBN: 9780599800496Subjects--Topical Terms:

860360
Civil engineering.
Subjects--Index Terms:

Discontinuous deformation analysisIndex Terms--Genre/Form:

542853
Electronic books.

Development of three-dimensional spherical discontinuous deformation analysis for granular materials.
LDR:04027nmm a2200385K 4500 001 2359994
005 20230925131726.5
006 m o d
007 cr mn ---uuuuu
008 241011s2000 xx obm 000 0 eng d
020 $a 9780599800496
035 $a (MiAaPQ)AAI9974539
035 $a AAI9974539
040 $a MiAaPQ $b eng $c MiAaPQ $d NTU
100 1 $a Zhao, Shilong. $3 3700608
245 1 0 $a Development of three-dimensional spherical discontinuous deformation analysis for granular materials.
264 0 $c 2000
300 $a 1 online resource (173 pages)
336 $a text $b txt $2 rdacontent
337 $a computer $b c $2 rdamedia
338 $a online resource $b cr $2 rdacarrier
500 $a Source: Dissertations Abstracts International, Volume: 62-05, Section: B.
500 $a Publisher info.: Dissertation/Thesis.
500 $a Advisor: Rahman, M. S.; Salami, M. R.
502 $a Thesis (Ph.D.)--North Carolina State University, 2000.
504 $a Includes bibliographical references
520 $a This dissertation presents a new numerical method-three-dimensional spherical discontinuous deformation analysis model (DDA). This three-dimensional model maintains the characteristics of the original two-dimensional DDA and uses spherical elements to simulate the mechanical properties of granular materials under different loading conditions. A computer program was developed to handle a combination of continuous and discontinuous large displacement problems, as well as large deformation and failure analysis, under external loads and boundary conditions. Particulate materials are ubiquitous in nature and are encountered in all spheres of engineering. The mechanical behavior of these materials is, therefore, of utmost import to a number of engineering problems, for example, deformation and damage of soils and concrete, storage of grains and food-stuffs, flow processes in handling of particulate materials, ice floes, and materials processing. Past several decades have witnessed sustained efforts aimed at understanding the behavior of particulate materials. These efforts have resulted in the development of a variety of theoretical approaches and complementary computational and experimental techniques. The theoretical approaches for particulate materials have ranged from micro mechanical methods, with the consideration of particle interactions, to conventional continuum mechanics methods. Similarly, computer simulation and experimental methods have been developed to study phenomena ranging from particle-level to bulk behavior. A brief review of DDA's concepts is presented and differences between DDA and other numerical methods are discussed. The detailed analysis of 3D spherical DDA formulations is presented. The analytical solutions for the simple physical cases are used to verify the ability and accuracy of 3D spherical DDA model. The results are satisfactory. Numerical simulations are performed to show the capabilities of this model to handle discontinuous contact problem under large displacements and deformations. The first application is an analysis of five-ball structure stability. The second example is a blasting simulation. The third simulation is a random packing process. A pile driving process is performed in Example 4. The last case studies the foundation settlement under the different loading conditions. Settlement study with a large amount of elements is also included. These numerical simulations demonstrate the capabilities of this DDA model for exploring the mechanical behaviors of granular materials under three-dimensional loading conditions.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2023
538 $a Mode of access: World Wide Web
650 4 $a Civil engineering. $3 860360
650 4 $a Mechanics. $3 525881
650 4 $a Materials science. $3 543314
653 $a Discontinuous deformation analysis
653 $a Granular materials
653 $a Spherical elements
655 7 $a Electronic books. $2 lcsh $3 542853
690 $a 0543
690 $a 0346
690 $a 0794
710 2 $a ProQuest Information and Learning Co. $3 783688
710 2 $a North Carolina State University. $3 1018772
773 0 $t Dissertations Abstracts International $g 62-05B.
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9974539 $z click for full text (PQDT)