Results 81 to 90 of about 92,493 (300)

Dynamic stability of cracked columns; the stiffness reduction method

Scientia Iranica, 2012
AbstractA new formulation for the dynamic stability of cracked columns is proposed. In this formulation, a differential equation governing the free vibration of a cracked column subjected to compressive axial force is derived. The solution of the proposed equation needs only the end conditions for its solution (similar to that of intact beam columns ...
Ranjbaran, A., Rousta, H., Ranjbaran, M., Ranjbaran, M.   +3 more
openaire   +1 more source

Toward Knowledge‐Based Workflows: A Semantic Approach to Atomistic Simulations for Mechanical and Thermodynamic Properties

Advanced Engineering Materials, EarlyView.
Knowledge‐based atomistic workflows are presented for mechanical and thermodynamic properties. By coupling modular simulations with ontology‐aligned metadata and provenance, Fe case studies on elastic behavior, defects, thermal properties, and Hall–Petch strengthening reveal how FAIR, queryable, and reusable simulation data can be generated. Mechanical
Abril Azócar Guzmán, Hoang‐Thien Luu, Sarath Menon, Tilmann Hickel, Nina Merkert, Stefan Sandfeld   +5 more
wiley   +1 more source

Dynamic Stiffness Effect of Mechanical Components on Gear Mesh Misalignment

Applied Sciences, 2018
In this work, we propose a method that considers the dynamic elastic stiffness of mechanical components in a quasi-static condition, and we investigate this parameter’s effect on gear mesh misalignment.
Jin-Gyun Kim, Ga Ae Gang, Seung-Je Cho, Geun Ho Lee, Young-Jun Park   +4 more
doaj   +1 more source

Some properties of bolted joints [PDF]

The roles of surface roughness and of surface flatness in determining the properties of structural joints are discussed. A method of measuring the effects of errors of form on joint stiffness is given.
Heath, Thomas V.
core  

Experimental Characterization and Constitutive Modeling of the Effect of Prior Inelastic Strain on the Viscoplastic Behavior of AD730 at 700 °C

Advanced Engineering Materials, EarlyView.
This study shows that superalloys used in aircraft engine disks become much more prone to deformation at high temperatures if they have been strained during manufacturing. This effect increases with the level of prior strain but eventually reaches a limit.
Fabio Machado Alves da Fonseca, Patrick Villechaise, Malik Durand, Arnaud Longuet, Florent Coudon, Loïc Signor, Julien De Jaeger, Dominique Eyidi, Nathalie Bozzolo, Jonathan Cormier   +9 more
wiley   +1 more source

The Partial Derivative Method for Dynamic Stiffness and Damping Coefficients of Supercritical CO2 Foil Bearings

, 2022
Supercritical CO2 foil bearings are promising bearing technology for supercritical CO2 high-speed turbomachinery. The partial derivative method including complete variable perturbation of the compressible turbulent lubrication Reynolds equation is ...
Chunxiao Bi, Dongjiang Han
core   +1 more source

Influence of Geometric Design on Mechanical Performance of Auxetic Metastructure

Advanced Engineering Materials, EarlyView.
Strategic geometric reinforcement transforms auxetic performance. This study evaluates 3D‐printed arrowhead metastructures, revealing that a modified design with local ring reinforcement suppresses premature failure to achieve superior energy absorption and structural efficiency.
Muhammad Gulzari, Supharoek Sornsomrit, Muhammad Ayaz Akbar, Stephan Rudykh   +3 more
wiley   +1 more source

Research on the Simulation Method for Equivalent Stiffness of Bolted Connection Thin Plate Structures

International Journal of Aerospace Engineering
Bolted connections are widely used in assembly structures, and their dynamic characteristics are often affected by stiffness, damping, excitation, and other factors.
Zhe Chen, Qi-jun Zhao, Guo-chen Zhou
doaj   +1 more source

An advanced finite element system for static and dynamic analysis-with application to the design of radial impellers [PDF]

, 1987
An advanced finite-element package, tailored to the static and dynamic analysis of radial impellers has been produced. Two families of new elements, one for thin and thick plates and the other for thin and thick shells, have been derived ...
Al-Azzawi, Mohammad Mousa
core  

Comparison of Triply Periodic Minimal Surface Energy Absorbers Under Uniaxial Compressive Loading

Advanced Engineering Materials, EarlyView.
This study investigates LCD 3D printed Triply Periodic Minimal Surface (TPMS) structures as mechanical energy absorbers. By comparing various base designs and layered combinations under uniaxial compression, it identifies that a Diamond‐Gyroid sandwich structure offers superior performance.
Sergej Grednev, Noah‐Lean Roschlaub, Anne Jung   +2 more
wiley   +1 more source