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RISAnalysis of Non-Gaussian Surge Response of Tension Leg Platforms Under Wind Loads
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The nonlinearity in the wind loading expression for a complaint offshore structure, e.g., a tension leg platform (TLP), results in response statistics that deviate from the Gaussian distribution. ...
Compound Circular Reflector of a Novel Design for Evacuated Tubular Collectors
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A new type of the reflectors for evacuated tubular collectors (ETC) which we referred to as a Compound Circular Reflector (CCR) was designed. The reflectors allow reducing the number of tubes ...
Damping Reduction in Structures Using Piezoelectric Circuitry With Negative Resistance
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: As damping reduction can potentially lead to performance enhancement in certain applications, a scheme based on the concept of piezoelectric circuitry that yields reduced damping effect in a ...
Impact Response of Steel Fiber-Reinforced Concrete Using a Split Hopkinson Pressure Bar
Publisher: American Society of Civil Engineers
Abstract: The uniaxial compressive response of steel fiber-reinforced concrete (SFRC) subjected to high strain rate loading is presented. Details of an experimental investigation using a 75-mm-diameter split Hopkinson pressure bar ...
Optimal City-Center Takeoff Operation of Tiltrotor Aircraft in One Engine Failure
Publisher: American Society of Civil Engineers
Abstract: This paper investigates optimal tiltrotor flight trajectories and performance in vertical takeoff operations from a city-center heliport considering the possibility of one engine failure. A two-dimensional longitudinal ...
Energy-Efficient Trajectories of Unmanned Aerial Vehicles Flying through Thermals
Publisher: American Society of Civil Engineers
Abstract: This study presents optimal energy-efficient flight trajectories of a generic unmanned aerial vehicle (UAV) flying through a vertical moving thermal cell. A two-dimensional point-mass model of a jet-engined UAV in the ...
A Reliability Assessment Method in Strain-Based Fatigue Life Analysis
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: For the purpose of fatigue reliability assessment based on strain-life analysis, a family of reliability-defined ε-Nf curves, called R -ε-Nf curves, is constructed by considering the interference ...
Improved Solder Joint Fatigue Models Through Reduced Geometry Dependence of Empirical Fits
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Predicting the fatigue life of solder interconnections is a challenge due to the complex nonlinear behavior of solder alloys, the importance of the load history, and the wide variation in ...
Solders Fatigue Prediction Using Interfacial Boundary Volume Criterion
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In this paper, an “interfacial boundary volume” based damage criterion was proposed in combination with the modified Coffin-Manson model to predict solder fatigue. This criterion assumes that ...
Singularities at Solder Joint Interfaces and Their Effects on Fracture Models
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In this study, we focus on investigating the nature of the stress and strain behavior in solder joints and their effect on the hybrid damage modeling approach, which is inspired by cohesive ...