A Study on Composing the Structural Test Equipment of Large Scale Beam Type Test Specimen to Load Multiple Point and Capacity

The Design of test frames of all types owes a great deal to the pioneer work of the Structures Department, Royal Aircraft Establishment. This particular frame contains some novel features and has been subjected to some unusual overall calibration tests, particularly in relation to the entirely automatic and centralised control gear.The choice of apparatus for testing large scale structural components may be influenced by many factors. In the present case, the choice of a test frame rather than other types of equipment was governed by the following considerations.In an industrial establishment it is essential that test equipment should be put to maximum use. Unlike a central testing establishment such as the R.A.E., major strength tests are relatively infrequent and therefore the equipment should also be suitable for as much as possible of the development and research testing which cannot be undertaken on standard material testing machines.

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The MPS Reconstruction of Porous Media Using Multiple-Grid Templates

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.462-463.462 ◽

2013 ◽

Vol 462-463 ◽

pp. 462-465 ◽

Cited By ~ 1

Author(s):

Yi Du ◽

Ting Zhang

Keyword(s):

Porous Media ◽

Large Scale ◽

Grid Method ◽

Training Image ◽

Multiple Point ◽

Grid Data ◽

Large Scale Structures ◽

Complex Features ◽

Grid Nodes ◽

Data Template

It is difficult to reconstruct the unknown information only by some sparse known data in the reconstruction of porous media. Multiple-point geostatistics (MPS) has been proved to be a powerful tool to capture curvilinear structures or complex features in training images. One solution to capture large-scale structures while considering a data template with a reasonably small number of grid nodes is provided by the multiple-grid method. This method consists in scanning a training image using increasingly finer multiple-grid data templates instead of a big and dense data template. The experimental results demonstrate that multiple-grid data templates and MPS are practical in porous media reconstruction.

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Development of a high-efficiency and long-life 500W class H-Darrieus-type vertical axis wind turbine (VAWT) system using skin-spar-foam sandwich composite structure

Science and Engineering of Composite Materials ◽

10.1515/secm-2012-0110 ◽

2013 ◽

Vol 20 (4) ◽

pp. 383-394

Author(s):

Changduk Kong ◽

Haseung Lee

Keyword(s):

Wind Turbine ◽

Large Scale ◽

High Efficiency ◽

Vertical Axis ◽

Small Scale ◽

Test Results ◽

Vertical Axis Wind Turbine ◽

Horizontal Axis Wind Turbine ◽

Structural Test ◽

The City

AbstractSince the focus on the energy crisis and environmental issues due to excessive fossil fuel consumption, wind power has been considered as an important renewable energy source. Recently, several megawatt-class large-scale wind turbine systems have been developed in some countries. Even though the large-scale wind turbine can effectively produce electrical power, the small-scale wind turbine has been continuously developed due to some advantages; for instance, it can be easily built at a low cost without any limitation of location, i.e., even in the city. In case of small-scale wind turbines, the vertical axis wind turbine (VAWT) is used in the city despite having a lower efficiency than the horizontal axis wind turbine. Furthermore, most small-scale wind turbine systems have been designed at the rated wind speed of around 12 m/s. This aim of this work is to design a high-efficiency 500W class composite VAWT blade that is applicable to relatively low-speed regions. With regard to the aerodynamic design of the blade, parametric studies are carried out to decide an optimal aerodynamic configuration. The aerodynamic efficiency and performance of the designed VAWT is confirmed by computational fluid dynamics analysis. The structural design is performed by the load case study, initial sizing using the netting rule and the rule of mixture, structural analysis using finite element method (FEM), fatigue life estimation and structural test. The prototype blade is manufactured by hand lay-up and the matched die molding. The experimental structural test results are compared with the FEM analysis results. Finally, to evaluate the prototype VAWT including designed blades, the performance test is performed using a truck to simulate various ranges of wind speeds and some measuring equipment. According to the performance evaluation result, the estimated performance agrees well with the experimental test results in all operating ranges.

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Optimal Dissociation Methods Differ for N- and O-glycopeptides

10.26434/chemrxiv.12062685.v1 ◽

2020 ◽

Author(s):

Nicholas Riley ◽

Stacy A. Malaker ◽

Marc D. Driessen ◽

Carolyn Bertozzi

Keyword(s):

Large Scale ◽

Collision Energy ◽

Electron Transfer Dissociation ◽

Method Performance ◽

Site Specific ◽

Advantages And Disadvantages ◽

Beam Type ◽

Supplemental Activation ◽

Glycopeptide Analysis

<p><a>Site-specific characterization of glycosylation requires intact glycopeptide analysis, and recent efforts have focused on how to best interrogate glycopeptides using tandem mass spectrometry (MS/MS). Beam-type collisional activation, i.e., higher-energy collisional dissociation (HCD), has been a valuable approach, but stepped collision energy HCD (sceHCD) and electron transfer dissociation with HCD supplemental activation (EThcD) have emerged as potentially more suitable alternatives. Both sceHCD and EThcD have been used with success in large-scale glycoproteomic experiments, but they each incur some degree of compromise. Most progress has occurred in the area N-glycoproteomics. There is growing interest in extending this progress to O-glycoproteomics, which necessitates comparisons of method performance for the two classes of glycopeptides. Here, we systematically explore the advantages and disadvantages of conventional HCD, sceHCD, ETD, and EThcD for intact glycopeptide analysis and determine their suitability for both N- and O-glycoproteomic applications. For N-glycopeptides, HCD and sceHCD generate similar numbers of identifications, although sceHCD generally provides higher quality spectra. Both significantly outperform EThcD methods, indicating that ETD-based methods are not required for routine N-glycoproteomics. Conversely, ETD-based methods, especially EThcD, are indispensable for site-specific analyses of O-glycopeptides. Our data show that O-glycopeptides cannot be robustly characterized with HCD-centric methods that are sufficient for N-glycopeptides, and glycoproteomic methods aiming to characterize O-glycopeptides must be constructed accordingly.</a></p>

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Vibration Control of Coupled Vibration between bi-linear type test Specimen and Shaking-Table

The proceedings of the JSME annual meeting ◽

10.1299/jsmemecjo.2004.5.0_227 ◽

2004 ◽

Vol 2004.5 (0) ◽

pp. 227-228

Author(s):

Masahiro HAYASHI ◽

Katsuhisa FUJITA

Keyword(s):

Vibration Control ◽

Test Specimen ◽

Shaking Table ◽

Coupled Vibration ◽

Linear Type ◽

Type Test

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Beam Frame Supported Shear Wall Structure Based on the ANSYS Finite Element Static Analysis of Beam-Type Transfer Floor

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.788.508 ◽

2013 ◽

Vol 788 ◽

pp. 508-510

Author(s):

Xing Hua Cheng ◽

Fu Ma

Keyword(s):

Finite Element ◽

Large Scale ◽

Simulation Analysis ◽

Great Influence ◽

Shear Wall ◽

Wall Structure ◽

Element Analysis ◽

Nonlinear Simulation ◽

Beam Type ◽

Beam Frame

This article research frame supported shear wall structure Beam-type Transfer layer at the supporting wall (across full) shape and the supporting column two structure forms, in the same form of vertical uniformly distributed load, the stress distribution variation trend and characteristics of the analyzed and discussed. Using large-scale finite element analysis software ANSYS to two different Beam-type Transfer structure of the nonlinear simulation analysis, combined with the stress nephogram of X to the analysis of two kinds of structure forms of the transfer beam and upper wall and the frame work characteristics [. The results of the study show that: In terms of the vertical stress, wall shape across the full shear wall in the stress of the beam structure performance is better, Column will produce large stress in the beam. Shear wall and stress of the transfer beam work together to transform beam has a great influence.

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Multiple-point statistical simulation for hydrogeological models: 3-D training image development and conditioning strategies

Hydrology and Earth System Sciences ◽

10.5194/hess-21-6069-2017 ◽

2017 ◽

Vol 21 (12) ◽

pp. 6069-6089 ◽

Cited By ~ 16

Author(s):

Anne-Sophie Høyer ◽

Giulio Vignoli ◽

Thomas Mejer Hansen ◽

Le Thanh Vu ◽

Donald A. Keefer ◽

...

Keyword(s):

Development Strategy ◽

Large Scale ◽

Statistical Simulation ◽

Training Image ◽

Multiple Point ◽

Data Sets ◽

Input Information ◽

Training Images ◽

Voxel Model ◽

Novel Strategy

Abstract. Most studies on the application of geostatistical simulations based on multiple-point statistics (MPS) to hydrogeological modelling focus on relatively fine-scale models and concentrate on the estimation of facies-level structural uncertainty. Much less attention is paid to the use of input data and optimal construction of training images. For instance, even though the training image should capture a set of spatial geological characteristics to guide the simulations, the majority of the research still relies on 2-D or quasi-3-D training images. In the present study, we demonstrate a novel strategy for 3-D MPS modelling characterized by (i) realistic 3-D training images and (ii) an effective workflow for incorporating a diverse group of geological and geophysical data sets. The study covers an area of 2810 km2 in the southern part of Denmark. MPS simulations are performed on a subset of the geological succession (the lower to middle Miocene sediments) which is characterized by relatively uniform structures and dominated by sand and clay. The simulated domain is large and each of the geostatistical realizations contains approximately 45 million voxels with size 100 m  ×  100 m  ×  5 m. Data used for the modelling include water well logs, high-resolution seismic data, and a previously published 3-D geological model. We apply a series of different strategies for the simulations based on data quality, and develop a novel method to effectively create observed spatial trends. The training image is constructed as a relatively small 3-D voxel model covering an area of 90 km2. We use an iterative training image development strategy and find that even slight modifications in the training image create significant changes in simulations. Thus, this study shows how to include both the geological environment and the type and quality of input information in order to achieve optimal results from MPS modelling. We present a practical workflow to build the training image and effectively handle different types of input information to perform large-scale geostatistical modelling.

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