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RISConfiguration Bifurcations Analysis of Six Degree-of-Freedom Symmetrical Stewart Parallel Mechanisms
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The configuration bifurcations of Stewart parallel manipulators at singular positions induce the uncertainty of the moving trends of the manipulative platform. The Jacobian matrix method can ...
Disturbed Configuration Bifurcation Characteristics of Gough–Stewart Parallel Manipulators at Singular Points
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In this paper, the disturbed configuration bifurcation characteristics of Gough–Stewart parallel manipulators at singular points are investigated. At first, the expended equation corresponding with ...
Stabilization of Pavement Subgrade Soils Containing Rich Chloride Salts
Publisher: American Society of Civil Engineers
Abstract: Soils containing rich soluble salts are widely available. Their behaviors as pavement subgrade depend on the types and compositions of the salts, local climate, and hydrogeological conditions. In this study, various amounts ...
Load-Carrying Capacity Assessment of an Existing Highway Bridge Based on Hybrid Finite-Element Model Updating
Publisher: ASCE
Abstract: The load-carrying assessment of existing and aging bridges has been a critical challenge in Australia and elsewhere. The reversed capacity of these bridges is under investigation because of increasing traffic loads, ...
Linear Stability Analysis of an Electrified Viscoelastic Liquid Jet
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A linear instability analysis method has been used to investigate the breakup of an electrified viscoelastic liquid jet. The liquid is assumed to be a dilute polymer solution modeled by the ...
Simulation of Rockfill Materials Using Aggregates of Cement Ellipsoids
Publisher: American Society of Civil Engineers
Abstract: Particles of natural rockfill materials come in various sizes and shapes, resulting from natural processes, and their mechanical properties are affected by a multitude of interdependent factors. As a result, it is very ...
Modified Disturbance Function Method for a 6-6 Gough–Stewart Parallel Manipulator to Traverse the Singularity Hypersurface
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Due to the motion uncertainty at the singular point, while the manipulator traverses the singularity hypersurface and moves from one singularity-free region to another, its motion is uncertain. ...
Scattering of Plane SH Waves Induced by a Semicylindrical Canyon with a Subsurface Circular Lined Tunnel
Publisher: American Society of Civil Engineers
Abstract: An analytical study of multiple scattering of plane shear horizontal (SH) waves induced by a semicylindrical canyon and a nearby buried circular lined tunnel in a homogeneous elastic half-space is presented using the ...
Robust Visual SLAM in Dynamic Environment Based on Motion Detection and Segmentation
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In this study, we propose a robust and accurate simultaneous localization and mapping (SLAM) method for dynamic environments. Our approach combines sparse optical flow with epipolar geometric constraints to detect motion, ...
Experimental and Theoretical Investigations on Active Earth Pressure Distributions behind Rigid Retaining Walls with Narrow Backfill under a Translational Mode
Publisher: ASCE
Abstract: The existing earth pressure theories, such as Rankine's theory and Coulomb's theory, adopt planar slip surfaces to establish force equilibrium equations. For retaining walls, especially for those with narrow backfill, the ...