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Effect of Different Inorganic Nanoparticles on Physical and Ultraviolet Aging Properties of Bitumen
Publisher: American Society of Civil Engineers
Abstract: The research reported in this paper evaluates a novel bitumen modification through the use of different inorganic nanoparticles, such as nanozinc oxide, nanosilica, and nanotitanium dioxide. In order to improve the dispersion ...
Experimental Investigation on Relations between Flutter Derivatives and Aerodynamic Admittances
Publisher: American Society of Civil Engineers
Abstract: Two kinds of relations between flutter derivatives and aerodynamic admittance functions (AAFs), which have been used in bridge aerodynamics, are discussed in this study by means of theoretical analysis and experiments. The ...
Repetitive Motion Planning and Control on Redundant Robot Manipulators With Push Rod Type Joints
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: To demonstrate the hardware realizability and efficacy of the quadratic program (QP) based methods for solving the nonrepetitive problem, this paper proposes a novel repetitive motion planning and control (RMPC) scheme and ...
A Quasi-Three-Dimensional Approach to Predict the Performance of Steam Surface Condensers
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A quasi-three-dimensional numerical procedure is proposed to simulate the fluid flow and heat transfer in the shell-side of steam surface condensers. The proposed procedure is applied to an ...
Dean Equations Extended to a Rotating Helical Pipe Flow
Publisher: American Society of Civil Engineers
Abstract: In this paper, the fully developed laminar flow in a rotating helical elliptical pipe is examined theoretically. This study focuses on the combined effects of the rotation, the curvature, the torsion, and the shape of cross ...
E4DVar: Coupling an Ensemble Kalman Filter with Four-Dimensional Variational Data Assimilation in a Limited-Area Weather Prediction Model
Publisher: American Meteorological Society
Abstract: hybrid data assimilation approach that couples the ensemble Kalman filter (EnKF) and four-dimensional variational (4DVar) methods is implemented for the first time in a limited-area weather prediction model. In this coupled ...
Stability Analysis of the Pressurized 3D Tunnel Face in Anisotropic and Nonhomogeneous Soils
Publisher: ASCE
Abstract: This paper investigates the effect of the anisotropy and nonhomogeneity of soil on the three-dimensional stability of a pressurized tunnel face. A three-dimensional horn failure mechanism was constructed. The energy ...
Effect of Hybrid Fibers on Flexural and Tensile Properties of Ultrahigh Performance Fiber-Reinforced Cementitious Composites: Experiments and Calculation
Publisher: ASCE
Abstract: This paper addresses effects of hybrid fibers on the flexural and tensile properties of ultrahigh performance fiber-reinforced cementitious composites (UHPFRCC). The workability, compressive strength, flexural strength, ...
A New Approach to Estimate Directional Spreading Parameters of a Cosine-2s Model
Publisher: American Meteorological Society
Abstract: For accurate and consistent estimates of the directional spreading parameter and mean wave direction of directional seas based on a cosine-2s directional spreading model, a new approach is proposed, employing a maximum ...
Sensitivity of Intrinsic Error Growth to Large-Scale Uncertainty Structure in a Record-Breaking Summertime Rainfall Event
Publisher: American Meteorological Society