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RISApplication of a Composite Model in the Analysis of Creep Deformation at Low and Intermediate Temperatures
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The creep behaviors of TA2 and R60702 at low and intermediate temperature were presented and discussed in this paper. Experimental results indicated that an apparent threshold stress was exhibited in the creep deformation ...
Schemes for Improving Flutter Performance of Suspension Bridges during Deck Erection under Normal and Skew Winds
Publisher: ASCE
Abstract: To ensure the flutter stability of long-span suspension bridges during deck erection under normal and skew winds, by taking the Runyang suspension bridge as example, the evolution of flutter stability of the bridge under ...
Substructure Stiffness and Mass Updating through Minimization of Modal Dynamic Residuals
Publisher: American Society of Civil Engineers
Abstract: This research studies a substructure finite element model updating approach that requires vibration data from only part of a large structure (i.e., a substructure). The residual structure is condensed using a limited ...
A New Approach for Singularity Analysis and Closeness Measurement to Singularities of Parallel Manipulators
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Singularity analysis is one of the most important issues in the field of parallel manipulators. An approach for singularity analysis should be able to not only identify all possible singularities ...
Orientation Capability, Error Analysis, and Dimensional Optimization of Two Articulated Tool Heads With Parallel Kinematics
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Because of the increasing demand in industry for A/B-axis tool heads, particularly in thin wall machining applications for structural aluminium aerospace components, the three-degree-of-freedom ...
Deformation Characteristics of Ventiduct Embankment on Qinghai-Tibet Railway
Publisher: American Society of Civil Engineers
Abstract: The Qinghai-Tibet railway, the highest railway in terms of elevation, was built under the harshest of weather conditions in the world. A new technique, called the ventiduct embankment, was used for the first time in railway ...
Determination of the Link Lengths for a Spatial 3-DOF Parallel Manipulator
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper addresses the issue of determining the optimal geometric parameters of a 3-DOF parallel manipulator. One of the advantages of the manipulator is that the moving platform exhibits ...
Kinematics and Closed Optimal Design of a Kind of PRRRP Parallel Manipulator
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper addresses optimal kinematic design of a PRRRP (P-prismatic joint, R-revolute joint) parallel manipulator that is horizontally actuated by linear actuators. Kinematically, the symmetrical ...
Behavior of Laterally Loaded Piles in Multilayered Soils
Publisher: American Society of Civil Engineers
Abstract: Piles have been widely used to resist lateral loads in geotechnical engineering. In reality, piles are always embedded in layered soils; however, theoretical solutions for laterally loaded piles in multilayered soil system ...
Substructure Stiffness and Mass Updating through Minimization of Modal Dynamic Residuals
Publisher: American Society of Civil Engineers
Abstract: This research studies a substructure finite element model updating approach that requires vibration data from only part of a large structure (i.e., a substructure). The residual structure is condensed using a limited number ...