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RISA Density Functional Theory Study on the Diffusion of Fission Gas Atoms in Uranium Dioxide
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Uranium dioxide (UO2) is the typical fuel that is used in the current nuclear power plant; fission gas atoms are produced during and after the nuclear reactor operation; the fission gas atoms have a significant effect on ...
Analysis of Wellbore Temperature Distribution and Influencing Factors During Drilling Horizontal Wells
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Horizontal well drilling technology is widely used in the exploitation of petroleum and natural gas, shale gas, and geothermal resources. The temperature distribution of wellbore and surrounding formation has a significant ...
Evidence-Based Structural Uncertainty Quantification by Dimension Reduction Decomposition and Marginal Interval Analysis
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Evidence theory has the powerful feature to quantify epistemic uncertainty. However, the huge computational cost has become the main obstacle of evidence theory on engineering applications. In this paper, an efficient ...
Numerical Decomposition for the Reliability-Oriented Sensitivity With Dependent Variables Using Vine Copulas
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: For the reliability-oriented sensitivity analysis with respect to the parameters of input variables, by introducing the copula function to describe the joint probability distribution with dependent input variables, the ...
Post-Buckling Analysis of Arch and Serpentine Structures Under End-to-End Compression
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Arch and serpentine structures are two fundamental structural forms with significant applications in various fields. When subjected to compressive loading at both ends, these structures undergo flexural-torsional post-buckling, ...
Study of Electromigration Induced Stress of Solder
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This study designed and produced a special microsolder specimen (Sn3.8Ag0.7Cu) to equalize current density under stressing. The specimen was generated to avoid temperature gradient and thermal migration. The inelastic ...
Sputtering of Graphite by Hydrogen Isotopes in the Fusion Environment: A Molecular Dynamics Simulation Study
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The sputtering of graphite due to the bombardment of hydrogen isotopes is crucial to successfully using graphite in the fusion environment. In this work, we use molecular dynamics to simulate the sputtering using the ...
Influence of Inlet Mud Temperature on Bottom Hole Mud Temperature During Horizontal Well Drilling
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The high temperature in the horizontal section and bottom of a horizontal well has a significant impact on the performance of mud and the safety of drilling equipment. The high bottomhole temperature is lowered often by ...
Research on Improving the Dynamic Performance of Centrifugal Pumps With Twisted Gap Drainage Blades
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Through numerical simulation and experiments analysis, it is indicated that the hydraulic and anticavitation performance of a centrifugal pump with twisted gap drainage blades based on flow control theory can be significantly ...
Study on the Intake Valve Close Timing Misalignment Between the Maximum Volume Efficiency and the None Backflow on a Single Cylinder Diesel Engine
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Since the intake valve close timing (IVC) directly determines the amount of displacement backflow and the amount of fresh charge trapped in the cylinder, optimizing the IVC is important to improve the performance of the ...