Bouc–Wen class models considering hysteresis mechanism of RC columns in nonlinear dynamic analysis
Systematic design of Cauchy symmetric structures through Bayesian optimization
Using a new Bayesian Optimization algorithm to guide the design of mechanical metamaterials, we design nonhomogeneous 3D structures possessing the Cauchy symmetry, which dictates the relationship between continuum and atomic deformations. Recent efforts to merge optimization techniques with the design of mechanical metamaterials has resulted in a c...
Tactile Perception of Vellum Quantified by Friction and Surface Roughness
Shear-driven reactions of organosulfur compounds on ferrous surfaces: A molecular dynamics study
Plasticity-induced damage and material loss in oscillatory contacts
Knowledge of plasticity-induced damage leading to the loss of material in oscillatory contacts is of paramount importance to various electromechanical systems comprising contact-mode elements exposed to high-frequency vibrations. However, experimental investigation of the wear behavior of devices experiencing microscopic oscillatory contact (fretti...
Measurement-driven, model-based estimation of residual stress and its effects on fatigue crack growth. Part 2: Fatigue c...
This paper assesses the accuracy of fatigue crack growth (FCG) predictions for high-strength aluminum samples containing residual stress (RS) and complex two-dimensional cracks subjected to constant amplitude load. FCG predictions use linear-elastic, multi-point fracture mechanics. A first prediction includes RS estimated by the model described in ...
Measurement-driven, model-based estimation of residual stress and its effects on fatigue crack growth. Part 1: Validatio...
The objective of this paper is to validate a measurement-driven, model-based approach to estimate residual stress (RS) in samples machined from quenched aluminum stock. Model input is derived from measurement of RS in the parent stock. Validation is performed for prismatic T-sections removed from bars at different locations. We find RS predicted ag...
Near Surface Residual Stress Measurement Using Slotting
Background: There are various experimental measurement techniques used to measure residual stress and this work describes one such method, the slotting method, and its application to measure near surface residual stresses. Objective: This work examines its application to macro-scale specimens. Methods: A series of numerical experiments were perform...
Electrostatically actuated MEMS in the post-touchdown regime: The thin-dielectric limit and a novel reduced-order model ...
Microelectromechanical systems (MEMS) often make use of a type of plate-based electrostatic actuator that can, under certain conditions, come into contact with a dielectric-coated electrode. After this “touchdown,” the presence of a free boundary between the contacting and non-contacting regions of the plate induces strong nonlinearities in the sys...
Interlaboratory Reproducibility of Contour Method Data in a High Strength Aluminum Alloy
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Background: The contour method for residual stress measurement has seen significant development, but an experimental reproducibility study utilizing physical samples has not been published. Objective: A double-blind reproducibly study is reported, having scope beginning with EDM cutting and ending with residual stress calculation. Methods: A reinfo...
