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RISGeneralized Differential Quadrature for Frequency of Rotating Multilayered Conical Shell
Publisher: American Society of Civil Engineers
Abstract: This paper uses the generalized differential quadrature (GDQ) method to study the influence of boundary conditions on the natural frequency of a rotating thin truncated circular multilayered conical shell. The governing ...
Nanoscratch Simulation on a Copper Thin Film Using a Novel Multiscale Model
Publisher: American Society of Civil Engineers
Abstract: A two-dimensional (2D) multiscale model to simulate the nanoscratching of a copper thin film is discussed in this paper. The multiscale model uses the classical molecular dynamics (MD) method to simulate the atomistic ...
Parallel Walls as an Abutment Scour Countermeasure
Publisher: American Society of Civil Engineers
Abstract: Scour at bridge abutments can cause damage or failure of bridges and result in excessive repairs, loss of accessibility, or even death. To mitigate abutment scour, both clear-water and live-bed laboratory experiments in a ...
Synthesis and Analysis of Kinematics/Statics of a Novel 2SP̱S+SP̱R+SP Parallel Manipulator
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper proposes a systematic methodology for dimension synthesis, kinematics, and statics of a novel 2SP̱S+SP̱R+SP parallel manipulator with 3DOF. First, a workspace is varied and analyzed ...
Thermal Properties of Hybrid Fiber-Reinforced Reactive Powder Concrete at High Temperature
Publisher: ASCE
Abstract: In order to study the thermal properties of reactive powder concrete (RPC) at high temperatures, the thermal conductivity, thermal diffusivity, specific heat capacity, and linear expansion coefficient of hybrid fiber-reinforced ...
Fatigue Deformation Model of Plain and Fiber-Reinforced Concrete Based on Weibull Function
Publisher: American Society of Civil Engineers
Abstract: A novel model based on the three-parameter Weibull function is proposed to describe the three-stage fatigue deformation behavior of plain and fiber-reinforced concrete. The fatigue strain at a particular stress between ...
Effect of Dewatering in a Confined Aquifer on Ground Settlement in Deep Excavations
Publisher: American Society of Civil Engineers
Abstract: Dewatering must be conducted for shallow confined aquifers located below deep excavations. However, its effects on ground settlement remain unclear, due to the complicated seepage and stress condition of the strata. In ...
Flexural Behavior of Hollow-Core Slabs Strengthened with Prestressed Basalt FRP Grids
Publisher: American Society of Civil Engineers
Abstract: Numerous studies have been conducted on strengthening techniques using prestressed fiber-reinforced polymer (FRP) laminates, bars, and tendons. However, to date, no technique has been developed for prestressed FRP grids, ...
Excessive Long-Time Deflections of Prestressed Box Girders. II: Numerical Analysis and Lessons Learned
Publisher: American Society of Civil Engineers
Abstract: As a sequel to Part I, which clarified the causes of the unexpectedly large deflections of the Koror-Babeldaob Bridge in the Pacific island nation of Palau, Part II presents the numerical procedure and reviews the lessons ...
Excessive Long-Time Deflections of Prestressed Box Girders. I: Record-Span Bridge in Palau and Other Paradigms
Publisher: American Society of Civil Engineers
Abstract: The segmental prestressed concrete box girder of Koror-Babeldaob (KB) Bridge in Palau, which had a record span of 241 m (791 ft), presents a striking paradigm of serviceability loss because of excessive multidecade ...