Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 9 of 9 for “"the Newmark method"”.
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Applying the Newmark Method to the Discontinuous Deformation Analysis
… analysis (DDA) is a newly developed simulation method for discontinuous systems. It was designed to simulate systems with arbitrary shaped blocks with high efficiency while providing accurate solutions for energy dissipation. But DDA usually exhibits damping effects that are inconsistent with …
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Seismic analysis of inclined shallow granular deposits
In the last decades many attempts for understanding the cyclic and dynamic behaviour of soft soils have been devoted by the scientific community. The aim of this thesis consists to investigate the mechanical response of two granular material (Hostun and Toyoura sand) in cyclic/dynamic conditions. …
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Um estudo sobre métodos de integração direta para a análise dinâmica não-linear de estruturas
… algorithms for non-linear dynamic analysis by the Finite Element Method. Included here are the Newmark Method, the Central Difference Method and also the treatment of the non-linear terms as pseudo-forces. Some criteria based on energy conservation concepts which are used to check both the …
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Seismic Slope Stability: A Comparison Study of Empirical Predictive Methods with the Finite Element Method
This study evaluates the seismically induced displacements of a slope using the Finite Element Method (FEM) in comparison to the results of twelve empirical predictive approaches. First, the existing methods to analyze the stability of slopes subjected to seismic loads are presented and their …
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Nonlinear earthquake analysis of wall pier bridges
Accurately predicting the response of complex bridge structures to strong earthquake ground motion requires the use of sophisticated nonlinear dynamic analysis computer programs not generally available to the bridge design engineer. The analytical tools that have been developed are generally …
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Modeling nonlinear material behavior at the nano and macro scales
Theoretical and computational methods have been used to study nonlinear effects in the mechanical response of materials at the nano and macro scales. These methods include, acoustoelastic theory, molecular dynamics and finite element models. The nonlinear indentation response of Ni thin films of …
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Free vibration and nonlinear transient analysis of imperfect laminated structures
The free vibration and nonlinear transient analysis of imperfect laminated structures with emphasis on computational methods for accurate and efficient analysis are studied. The evaluation of interlaminar stresses is also studied by approximating global displacements of laminated plates. Free …
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Reduced order models for fluid-structure interaction systems by mixed finite element formulation
… formulation is introduced in order to compute the coupled frequencies without the contamination of nonphysical spurious non-zero frequencies. Furthermore, gravitational forces are introduced to include the coupled sloshing mode. In addition, u/p mixed formulation is the first time employed in …
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Nonlinear finite element analysis of reinforced concrete structures subjected to blast loading
This thesis is concerned with the development of finite element techniques for nonlinear dynamic analysis of planar and axisymmetric reinforced concrete structures subjected to blast loading. The main aspects of numerical modelling process to simulate blast loads, structural geometries and material …