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RISImproved Design Limit for Antiram Bollard Systems Subjected to Truck Impact
Publisher: American Society of Civil Engineers
Abstract: Antiram bollard systems (ABS) can effectively prevent vehicle bombs from approaching protected areas and thus reduce the damage from blasts and debris. This paper presents an assessment of the current design limits for ...
Vehicular Collision Performance Evaluation of Concrete-Filled Steel Tubular Piers Designed According to Current Codes in the US, Europe, and China
Publisher: ASCE
Abstract: Current bridge codes in the US, Europe, and China specify vehicular collision loads for the design of piers. However, the performance of piers designed according to current codes in the three countries or regions is unknown ...
Solving Driving Forces of 2(3-SPR) Serial-Parallel Manipulator by CAD Variation Geometry Approach
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A novel 2(3-SPR) serial-parallel manipulator is proposed. A novel approach for solving driving forces of the 2(3-SPR) parallel manipulator is proposed by using the virtual work theory and the ...
A Unified Approach to Solving Driving Forces in Spatial Parallel Manipulators With Less Than Six DOFs
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A unified approach to solving driving forces in spatial parallel manipulators with less than six DOFs is proposed. First, the geometric constrained equations of the parallel manipulators are ...
Unified Solving Jacobian∕Hessian Matrices of Some Parallel Manipulators With n SPS Active Legs and a Passive Constrained Leg
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Some parallel manipulators with n spherical joint-prismatic joint-spherical joint (SPS)-type active legs and a passive constrained leg possess a larger capability of load bearing and are simple ...
Analysis of Stiffness and Elastic Deformation for Some 3–5-DOF PKMs With SP R or RP S-type legs
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper proposes an equivalent mechanism approach for establishing the stiffness matrices of some 3–5DOF (degree of freedom) parallel kinematic machines (PKMs) with SP̱R- or RP̱S-type legs and ...
Seismic Performance of Interior and Exterior Beam–Column Joints in Recycled Aggregate Concrete Frames
Publisher: American Society of Civil Engineers
Abstract: The failure of beam–column joints in RC frame buildings induced by a strong earthquake can lead to the collapse of buildings. Therefore, numerous experimental studies have been carried out on beam–column joints made with ...
Maximum Impact Force of Truck Frontal Crashing into Antiram Bollard Systems
Publisher: American Society of Civil Engineers
Abstract: Antiram bollard systems (ABSs) can effectively prevent vehicle bombs from approaching protected buildings and infrastructures and thus reduce the damage from blast and debris. This paper presents an assessment of existing ...
Numerical Investigations and Performance Experiments of a Deep-Well Centrifugal Pump With Different Diffusers
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In this paper, the design methodology of a new type of three-dimensional surface return diffuser (3DRD) is presented and described in detail. The main goal was to improve the hydrodynamic ...
Mathematical Model for Sediment Wash-Off from Urban Impervious Surfaces
Publisher: American Society of Civil Engineers
Abstract: Mathematical models are significant tools for urban runoff management. A rational account of sediment-limited and energy-limited situations in developing a mathematical model may facilitate the improved simulation of total ...