Transverse plane

About: Transverse plane is a research topic. Over the lifetime, 17069 publications have been published within this topic receiving 194059 citations. The topic is also known as: axial plane.

Dynamic Response of Composite Beams with Partial Shear Interaction Using a Higher-Order Beam Theory

Abstract: Dynamic response of composite beams with partial interaction is presented using a one-dimensional finite-element model based on a higher-order beam theory. The proposed model takes into account the effect of partial shear interaction between the adjacent layers, as well as the transverse shear deformation of the beam. A third order variation of the axial displacement of the fibers over the beam depth is taken to have a parabolic variation of shear stress, which vanishes at both the top and bottom fibers of the transverse composite surface, as clearly derived on the free and tangentially unloaded surface of the continua. In the proposed finite-element model, there is no need to incorporate any shear correction factor, and the model is free from the shear locking problem. The proposed numerical model is validated by comparing the results with those available in the literature. Many new results are presented, because there are no published results on vibration and buckling of composite beams based on higher-order beam theory.

Putting coronal seismology estimates of the magnetic field strength to the test

Abstract: The magnetic field strength inside a model coronal loop is estimated using coronal seismology, to examine the reliability of magnetic field strengths derived from observed, transverse coronal loop oscillations. Three-dimensional numerical simulations of the interaction of an external pressure pulse with a coronal loop (modeled as a three-dimensional density enhancement inside a two-dimensional magnetic arcade) are analyzed and the observed properties of the excited transverse loop oscillations are used to derive the value of the local magnetic field strength, following the method of Nakariakov & Ofman. Due to the (unexpected) change in periodicity, the magnetic field derived from our observed oscillation is substantially different from the actual (input) magnetic field value (approximately 50%). Coronal seismology can derive useful information about the local magnetic field, but the combined effect of the loop curvature, the density ratio, and aspect ratio of the loop appears to be more important than previously expected.

Strain and Pulse Duration Considerations for Extended-Life Hot-Mix Asphalt Pavement Design

Abstract: In the design of extended-life hot-mix asphalt pavements (ELHMAP or perpetual pavements), the fatigue endurance limit is the key element. Thus, horizontal tensile strain at the bottom of the hot-mix asphalt layer is the critical design parameter. This paper presents results of a study performed at the University of Illinois test facility that focused on the evaluation of the most critical pavements responses for ELHMAP design. Longitudinal and transverse tensile strain pulses were measured in four sections tested with the accelerated pavement testing machine. A very strong relationship between the longitudinal and transverse pulse durations was found. In general, the transverse pulse durations were about three times those in the longitudinal direction. A relationship between longitudinal and transverse tensile strains was also found. Generally speaking, the transverse tensile strains were about 1.5 times greater than those in the longitudinal direction. The haversine function was the best representation for the longitudinal and the transverse strain pulses. The transverse pulse is very sensitive to the lateral position of the moving load. As the offset of the moving load increases, the rate at which the transverse tensile strain decreases is considerably greater than that of the longitudinal tensile strain. Moreover, if the moving load passes far enough from the strain gauge location, the transverse strain pulse reverses from tension to compression.

Eddy Currents in Finite Conducting Sheets

Abstract: This paper deals with eddy currents in bounded plane conductors. Specifically, we are concerned with the semi‐infinite plane sheet and a conducting disk. The eddy‐current distribution in a perfectly conducting sheet or disk due to a magnetic monopole source is obtained by a technique due to Sommerfeld. Sommerfeld's analysis for the disk is incomplete, but we have completed the derivation for this geometry. The eddy‐current decay in a semi‐infinite sheet of finite conductivity is solved by an approximate technique. The results are used to calculate lift, drag, and transverse forces on a magnetic monopole moving parallel to the edge of a semi‐infinite sheet of finite conductivity.

Transverse Modes in I.H.P. SAW Resonator and Their Suppression Method

Abstract: We discuss transverse modes in a resonator on a multilayer substrate with a thin piezoelectric plate. A generation mechanism of the transverse mode response in I.H.P. SAW (Incredible High-Performance SAW)resonator with a LiTa03 plate is analyzed by using FEM simulations, and it is shown that a slowness curve of the I.H.P. SAW structure is changed significantly compared with a standard 42° Y-X LiTa03 substrate. A new tilted resonator structure is proposed to suppress the transverse mode spurious. It is found that the tilted resonator with a small tilted angle can suppress the spurious response successfully with maintaining a high-Q factor.