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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
241

Implementation and application of NDE on ceramic candle filters

Kiriakidis, Alejandro C., January 2003 (has links)
Thesis (Ph. D.)--West Virginia University, 2003. / Title from document title page. Document formatted into pages; contains xiv, 185 p. : ill. (some col.). Vita. Includes abstract. Includes bibliographical references (p. 170-176).
242

Finite element analysis of cell subjected to compressive loading

Venkatesan, Vidhyashankar. January 2002 (has links)
Thesis (M.S.)--West Virginia University, 2002. / Title from document title page. Document formatted into pages; contains xii, 123 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 84-88).
243

Advanced transition finite element formulation for adaptive refinementanalysis of solids and structures

Wu, Dan, 吴丹 January 2010 (has links)
published_or_final_version / Mechanical Engineering / Doctoral / Doctor of Philosophy
244

Convolutional perfectly matched layers for finite element modeling of wave propagation in unbounded domains

Xu, Boqing, 許博卿 January 2014 (has links)
A general convolutional version of perfectly matched layer (PML) formulation for second-order wave equations with displacement as the only unknown based on the coordinate stretching is proposed in this study, which overcomes the limitation of classical PML in splitting the displacement field and requires only minor modifications to existing finite element programs. The first contribution concerns the development of a robust and efficient finite element program QUAD-CPML based on QUAD4M capable of simulating wave propagation in an unbounded domain. The more efficient hybrid-stress finite element was incorporated into the program to reduce the number of iterations for the equivalent linear dynamic analysis and the total time for the direct time integration. The incorporation of new element types was verified with the QUAD4M solutions to problems of dynamic soil response and the efficiency of hybrid-stress finite element was demonstrated compared to the classical finite elements. The second development involves the implementation of a general convolutional perfectly matched layer (CPML) as an absorbing boundary condition for the modeling of the radiation of wave energy in an unbounded domain. The proposed non-split CPML formulation is displacement-based, which shows great compatibility with the direct time integration. This CPML formulation treats the convolutional terms as external forces and includes an updating scheme to calculate the temporal convolution terms arising from the Fourier transform. In addition, the performance of the CPML has been examined by various problems including a parametric study on a number of key coefficients that control the absorbing ability of the CPML boundary. The final task of this thesis is to apply the developed CPML models to the dynamic analyses of soil-structure interaction (SSI) problems. Typical loading conditions including external load on the structure and underground wave excitation on the medium has been considered. Practical applications of CPML models include the numerical study on the effectiveness of the rubber-soil mixture (RSM) as an earthquake protection material and the report of vibrations induced by the passage of a high-speed train. The former investigates the effectiveness of the CPML models for the evaluation of the performance of RSM subject to seismic excitation and the latter tests the boundary effects on the accuracy of the results for train induced vibrations. Both studies show that CPML as an absorbing boundary condition is theoretically sound and effective for the analysis of soil-structure dynamic response. / published_or_final_version / Civil Engineering / Doctoral / Doctor of Philosophy
245

Finite element study of a heated thin fluid layer including surfactant effect

Wang, Xiaowen 28 August 2008 (has links)
Not available / text
246

Analytical modeling of fully bonded and debonded pre-tensioned prestressed concrete members

Baxi, Asit Nareshchandra, 1963- 28 August 2008 (has links)
Not available / text
247

A comparative study of Galerkin mesh-free and finite element methods

Liang, Xiaodong., 梁?東. January 2004 (has links)
published_or_final_version / abstract / toc / Mechanical Engineering / Master / Master of Philosophy
248

Two level finite element method for structural analysis

Wong, Sze-chun., 黃仕進 January 1988 (has links)
published_or_final_version / abstract / toc / Civil Engineering / Master / Master of Philosophy
249

Adaptive finite element analysis for 2D elastostatic problems

李子敬, Lee, Chi-king. January 1992 (has links)
published_or_final_version / abstract / toc / Civil Engineering / Master / Master of Philosophy
250

Finite element modelling and its calibrations as applied to the prediction of groundwater table movements

何嘉彥, Ho, Kar-yin. January 1982 (has links)
published_or_final_version / Civil Engineering / Master / Master of Philosophy

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