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(1990)The effect of effective material nonlinear properties of fiber composites on crack behavior is studied. Threedimensional nonlinear constitutive equations are established, based on both complementary energy density and ...

(1990)A detailed, rigorous analysis of the dynamics of a large class of linear passive discretedistributed mechanical systems has been performed, unifying and extending previous results in the field. A distributed parameter ...

(1996)Analysis of thermal and mechanical behavior of copper walls under high heat flux loading has been performed, including plasticity, creep, and thermal cyclic fatigue. Two and three dimensional finite element models for the ...

(1995)In this work, several aspects of nonlinear normal modes (NNMs) and free and forced nonlinear mode localization are investigated. In the first phase of the work, new asymptotic methodologies based on the concept of NNM are ...

(1989)A thin layer of a singlecomponent Boussinesq fluid, contained between two rigid horizontal plates of low thermal conductivity, is cooled from above and heated from below. In the steadystatic state, a heat flux traverses ...

(1991)An asymptotic description of the acoustic signature of a crack, breaking the surface of an otherwise homogeneous, isotropic elastic material, determined using either a line focus or a point focus scanning acoustic microscope ...

(1992)Coating flows have many very important applications in engineering. The first part of this thesis deals with gravitydriven reacting coating flows down an inclined plane. When the reaction activation energy is large and ...

(1994)A new cubic finite element model which can be used for the analysis of thin or moderately thick laminated composite circular cylindrical shells is developed. This model accounts for transverse shear deformation and rotary ...

(1994)Stress wave propagation in layered systems with infinite and finite numbers of isotropic layers is investigated. A transfer matrix formulation for the axisymmetric problem is developed using a double integral transform ...

(1991)Robust largeangle spacecraft pointing and tracking by Variable Structure Control (VSC) are developed. The control of multiaxial attitude dynamics is a highly nonlinear problem, which can be resolved by exact feedback ...

(1991)In order to model liquidmetal flows in selfcooled liquidlithium blankets for magneticconfinement fusion reactors, liquid metal flows in rectangular ducts with thin conducting walls have been treated by combining ...

(1991)A finite element simulation, based on Barone and Caulk's model, is developed to study the compression mold filling over threedimensional curved surfaces. The effects of charge thickness and surface curvature on the pressure ...

(1995)The finiteelement method and the NewtonRaphson method are combined to investigate the momentum, mass, and energyconservation equations for strongly coupled flow problems. Then the design sensitivities of the system ...

(1993)In this thesis a new manufacturing process for thick thermosetting matrix composites, called continuous curing, is studied. In this process cure proceeds at the same time as material is supplied, for instance by tape laying ...

(1996)Circular membranes and circular plates are used in several types of equipments. For the better design of these equipments an accurate computation of the stresses and the displacements in circular membranes and circular ...

(1996)The slight nonlinear character of a vibrating cracked beam is exploited for the purpose of determining crack location, crack depth, and crackopening load. The approach is motivated by examining the response of a bilinear ...

(1994)Techniques for efficient and systematic design and analysis of transient nonlinear coupled problems are presented. This class of problems includes systems with history dependent material response, e.g. plasticity. The ...

(1992)The boundary integral equation/boundary element method (BIE/BEM) has emerged as a powerful alternative tool to other numerical methods for many problems in engineering. The hypersingular BIE's, which are derivatives of ...

(1994)A large diameter gas gun has been developed which fires a 4ft diameter, 3,200 lb projectile downward at velocities up to 230 ft/sec. The impact of the projectile onto geologic or other material specimens beneath the gun ...

(1996)An investigation has been conducted to gain a better understanding of the drained residual and fully softened shear strengths of cohesive soils, the shear strength mobilized in field case histories involving previous and ...
Now showing items 120 of 82