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RISMultiobjective Optimization Design of a Pump–Turbine Impeller Based on an Inverse Design Using a Combination Optimization Strategy
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents an automatic multiobjective hydrodynamic optimization strategy for pump–turbine impellers. In the strategy, the blade shape is parameterized based on the blade loading distribution using an inverse ...
A New Approach for Forecasting the Price Range with Financial Interval Valued Time Series Data
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper proposes an intervalbased methodology to model and forecast the price range or rangebased volatility process of financial asset prices. Comparing with the existing volatility models, the proposed model utilizes ...
Evaluating Sustainable Urbanization of Resource-Based Cities Based on the McKinsey Matrix: Case Study in China
Publisher: American Society of Civil Engineers
Abstract: Urbanization in resource-based Chinese cities is experiencing rapid development, which has resulted in many problems. This paper introduces a McKinsey matrix–based method to assess the sustainable urbanization performance ...
Physically Based Modeling of Cyclic Plasticity for Highly Oriented Nanotwinned Metals
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Fatigue resistance is crucial for the engineering application of metals. Polycrystalline metals with highly oriented nanotwins have been shown to exhibit a history-independent, stable, and symmetric cyclic response [Pan ...
General Stress-Strain Model for Steel- and FRP-Confined Concrete
Publisher: American Society of Civil Engineers
Abstract: A new and general stress-strain model for concrete confined by steel or fiber reinforced polymer (FRP) is developed in this work. One additional variable and one constant are added to the well-known Popovics model to control ...
Reliability-Based Service Life Prediction of Corrosion-Affected Metal Pipes with Mixed Mode Fracture
Publisher: American Society of Civil Engineers
Abstract: This paper presents a time-dependent reliability method for the assessment of corrosion-affected metal pipe failures. Two nonlinear limit state functions are proposed for brittle and ductile pipes with mixed mode fracture. ...
Efficient Solution for Calculation of Upcrossing Rate of Nonstationary Gaussian Process
Publisher: American Society of Civil Engineers
Abstract: Almost all engineering systems are not only uncertain, but also time-variant. As such, it is most appropriate to use a time-dependent reliability method, e.g., first passage probability, in the prediction of their ...
Real-Time State of Charge Estimation of the Extended Kalman Filter and Unscented Kalman Filter Algorithms Under Different Working Conditions
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In the battery management system (BMS), the state of charge (SOC) is a very influential factor, which can prevent overcharge and over-discharge of the lithium-ion battery (LIB). This paper proposed a battery modeling and ...
Compressive Behavior of Steel-FRP Composite Bars Confined with Low Elastic Modulus FRP Spirals in Concrete Columns
Publisher: ASCE
Abstract: This paper provides an experimental study on the compressive behavior of steel fiber–reinforced polymer composite bars (SFCBs) confined in concrete columns. Thirty reduced-scale concrete columns, reinforced with different ...
Dynamic Stall Inception and Evolution Process Measured by High-Frequency Particle Image Velocimetry System in Low Specific Speed Impeller
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Stall in centrifugal pumps is a complicated flow phenomenon, which is detrimental to the pumps' safety and stable operation. Using a high-frequency particle image velocimetry (PIV) system (f = 10k Hz) and a bench-scale ...