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Design of Joint Angle Profiles for a Planar Five-Link Bipedal System
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A set of joint angle profiles for a five-link bipedal model walking on level ground is designed. One feature of the joint angle profiles is that after an impulsive energy injection at an ...
Impact Control in Hydraulic Actuators
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Every manipulator contact task that begins with a transition from free motion to constraint motion may exhibit impacts that could drive the system unstable. Stabilization of manipulators during ...
Moving Load and Prestress Identification Using Wavelet-Based Method
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A novel moving force and prestress identification method based on finite element and wavelet-based method for bridge-vehicle system is developed. A two-axle vehicle model and simple-supported beam ...
Micromechanics of an Extrusion in High-Cycle Fatigue With Creep
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Extrusions and intrusions often are sites of fatigue cracks. The extent of extrusions is important in fatigue crack initiation. Metals often are subject to fatigue loadings at elevated temperatures. ...
Stochastic FEM Based on Local Averages of Random Vector Fields
Publisher: American Society of Civil Engineers
Abstract: The formula for the covariances of the local averages of homogeneous random scalar fields over rectangular domains is first generalized to include the case of homogeneous random vector fields with quadrant symmetry. For ...
Effect of Strain Gradients and Heterogeneity on Flow Strength of Particle Reinforced Metal-Matrix Composites
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper deals with an analysis of the size effect on the flow strength of metal-matrix composites due to the presence of geometrically necessary dislocations. The work is based upon a cell ...
Interfacial Structure and Micro and Nano-Mechanical Behavior of Laser-Welded 6061 Aluminum Alloy Blank
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: 1 mm thick tailor-welded blank of 6061 alloy has been fabricated by Nd:YAG laser welding. The microstructure and the failure mechanism of the welded blank are investigated using optical microscope, ...
Fatigue Failure Analysis of Cracks near the Sole Plate of a Half-Through Steel-Arch Bridge
Publisher: American Society of Civil Engineers
Abstract: A fractured bolt connecting the bearing and the stiffening girder of a half-through steel-arch bridge, with a main span length of 113 m, which was opened for public in September 1996, was found in October 2013 during ...