Topic
Deflection (engineering)
About: Deflection (engineering) is a research topic. Over the lifetime, 30862 publications have been published within this topic receiving 298849 citations.
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TL;DR: In this article, the authors investigated the effects of different types of PILE BATTER, rePETITIVE LOAD, JETTING and PREJETTING, and DENSIFICATION of a PILE Foundation in SAND for LOCKS and DAMs of the lower Arkansas River.
Abstract: FIELD LATERAL LOAD TESTS WERE MADE ON A VARIETY OF PILES DRIVEN WITH DIFFERENT HAMMERS TO DEVELOP CRITERIA FOR THE DESIGN AND CONSTRUCTION OF PILE FOUNDATIONS IN SAND FOR LOCKS AND DAMS OF THE LOWER ARKANSAS RIVER. THE INVESTIGATION INCLUDED DETERMINATION OF THE EFFECTS OF PILE BATTER, REPETITIVE LOAD, JETTING AND PREJETTING, AND DENSIFICATION OF THE FOUNDATION SOILS ON THE FLEXURAL AND LATERAL LOAD-DEFORMATION BEHAVIOR OF INDIVIDUAL PILES. THE PILE TESTS SHOWED THAT: (1) TRIANGULAR DISTRIBUTION OF MODULUS OF HORIZONTAL SUBGRADE REACTION NH WITH RESPECT TO DEPTH IS A GOOD APPROXIMATION; (2) COEFFICIENT NH IS DEPENDENT ON THE PILE DEFLECTION; (3) REPETITIVE LOADING INCREASES TOTAL DEFLECTION AT A GIVEN LOAD LEVEL BY ABOUT 100%; (4) FOR A GIVEN LATERAL LOAD, FULLY JETTED PILES DEFLECT 20% TO 50% MORE THAN UNJETTED PILES; (5) DENSIFICATION OF THE FOUNDATION SANDS INCREASES NH VALUE BY ABOUT 100%; AND (6) THE LATERAL LOAD CAPACITY OF A PILE IS ESSENTIALLY INDEPENDENT OF THE HAMMER USED TO DRIVE THE PILE. /ASCE/
79 citations
TL;DR: In this article, the response of thin clamped plates subjected to static punch indentation is investigated experimentally, analytically and numerically to determine the onset of fracture, and the accumulated equivalent plastic strain with stress triaxiality as a weighing function is introduced as ductile fracture criterion in the finite-element simulation and analytical prediction.
79 citations
Patent•
23 Sep 2002TL;DR: In this article, a digital deflection control scheme is employed in which the deflection scanning signal and correction are all calculated digitally in a deflection controller for deflecting and controlling a charged particle beam irradiated onto a subject to be inspected.
Abstract: In order that the deflection scanning position can be corrected at a time point within a period for fetching information from a subject to be inspected and improvements in accuracy of chip comparison inspection and an inspection near the wafer outer periphery where distortion is large can be assured by correcting the inspection position and biased distortion at a high speed with high accuracy, a digital deflection control scheme is employed in which the deflection scanning signal and correction are all calculated digitally in a deflection controller for deflecting and controlling a charged particle beam irradiated onto a subject to be inspected and the digital value is sequentially converted into an analog value by a time-series train of digital control signal to form a deflection scanning waveform.
79 citations
TL;DR: In this paper, a linear static analysis of functionally graded carbon nanotube-reinforced composite structures is presented, and the results in terms of deflection and stresses are illustrated by three numerical examples in order to outline the performance and applicability of the proposed finite element method.
79 citations
TL;DR: The aim of this study was to evaluate the effect of tools and probes on deflection angle and irrigation flow volume in the latest generation of flexible renoscopes.
Abstract: Introduction: Flexible renoscopes offer access to almost all points within the collecting system. For stone workup, excellent visualization is mandatory. Therefore, irrigation flow is of critical importance. The aim of this study was to evaluate the effect of tools and probes on deflection angle and irrigation flow volume in the latest generation of flexible renoscopes. Methods: Five flexible renoscopes [Wolf (Viper), Storz (FlexX2), ACMI (DUR-8 Elite, DUR-D), Olympus (URF-P5)] were tested. Deflection angle, lowest diameter of the bent tip, and flow rates were measured. Recorded parameters were deflection angle and flow rate of the empty and loaded scopes. A laser probe (273 μm), biopsy forceps (2.4–3.0 French), and tipless nitinol baskets (1.5–2.4 French) were tested. Results: Deflection has no influence on flow rate. The size of the basket has no influence on the maximum angle of deflection. Introducing the laser fiber or the biopsy forceps leads to relevant loss of deflection (laser fiber: 4.44%–10.21%...
79 citations