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RISContact Transience during Slow Loading of Dense Granular Materials
Publisher: American Society of Civil Engineers
Abstract: The irregularity of particle motions during quasi-static deformation is investigated using discrete element (DEM) simulations of sphere and sphere-cluster assemblies. A total of three types of interparticle movements are ...
Safety-Knowledge Management in American Construction Organizations
Publisher: American Society of Civil Engineers
Abstract: Despite improvements in safety performance over the past 30 years, the construction industry still accounts for an injury-and-illness rate that is approximately five times greater than the all-industry average. This ...
On the Sensitivity of the Drake Passage Transport to Air–Sea Momentum Flux
Publisher: American Meteorological Society
Abstract: n eddy-permitting state estimate and its adjoint are used to analyze the influence of wind stress perturbations on the transport of the Antarctic Circumpolar Current (ACC) system through Drake Passage. The transport is ...
Experimental Study of Linear and Radial Two Phase Heat Transport Devices Driven by Electrohydrodynamic Conduction Pumping
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Heat pipes are well known as simple and effective heat transport devices, utilizing twophase flow and the capillary phenomenon to remove heat. However, the generation of capillary pressure requires a wicking structure and ...
Smooth Convex Three-Dimensional Particle for the Discrete-Element Method
Publisher: American Society of Civil Engineers
Abstract: Stable and efficient algorithms are presented for a three-dimensional particle for discrete-element simulations. The particle, termed an “ovoid,” approximates an axisymmetric ellipsoid but is composed of two spherical caps ...
Electrohydrodynamic Conduction Driven Single and Two Phase Flow in Microchannels With Heat Transfer
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Microchannels have wellknown applications in cooling because of their ability to handle large quantities of heat from small areas. Electrohydrodynamic (EHD) conduction pumping at the microscale has previously been demonstrated ...
Risk-Based Framework for Safety Investment in Construction Organizations
Publisher: American Society of Civil Engineers
Abstract: The costs of construction injuries can have a substantial impact on the financial success of construction organizations and increase the overall costs of construction up to 15%. Following the Occupational Safety and Health ...
A Probabilistic Radar Forward Model for Branched Planar Ice Crystals
Publisher: American Meteorological Society
Abstract: AbstractPolarimetric radar measurements provide information about ice particle growth and offer the potential to evaluate and better constrain ice microphysical models. To achieve these goals, one must map the ice particle ...
Controlling Out-of-Plane Buckling in Shear-Acting Structural Fuses through Topology Optimization
Publisher: ASCE
Abstract: Shear-acting structural fuses rely on steel plates subjected to in-plane lateral displacements that dissipate energy through shear yielding or may have cutouts that result in shear or flexural yielding of ductile local ...
Identifying and Controlling Biases in Expert-Opinion Research: Guidelines for Variations of Delphi, Nominal Group Technique, and Focus Groups
Publisher: ASCE
Abstract: In construction engineering and management (CEM) research, conducting field studies often is infeasible because of resource constraints, limited access to sites, practicality, confounding factors, and ethical limitations. ...