Experimental and theoretical analysis of dynamic effects in cement storage silos

by Hamdy Hessien Abd-el-Rahim

Publisher: Wydawnictwo Politechniki Wrocławskiej in Wrocław

Written in English
Published: Pages: 265 Downloads: 128
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Subjects:

  • Silos -- Design and construction.,
  • Structural dynamics.

Edition Notes

Includes bibliographical references (p. 258-265).

StatementHamdy Hessien Abd-el-rahim.
Classifications
LC ClassificationsTH4935 .23 1991
The Physical Object
Pagination265 p. :
Number of Pages265
ID Numbers
Open LibraryOL1333470M
LC Control Number92215502

Dynamic Analysis of Multiple-Body Floating Platforms Coupled with Mooring Lines and Risers. (May ) Young-Bok Kim, B.S., Inha University; M.S., Seoul National University Co-Chairs of Advisory Committee: Dr. Moo-Hyun Kim Dr. Cheung H. Kim A computer program, WINPOST-MULT, is developed for the dynamic analysis. Static and Dynamic Analysis of Reinforced Concrete Shells 1 INTRODUCTION Nonlinear analysis of reinforced concrete shells is an important subject nowadays. Thorough inves-tigation of capacity and safety aspects, concrete structures require to establish that the entire struc-tural response up to collapse. Content: Cement-Based Composites-A Case for Sustainable Construction Cement and Concrete Production Current Trends Structure of This Book Historical Aspects of Conventional Fiber-Reinforced Concrete Systems Prehistoric Developments Asbestos Cement Hatscheck Process Ferrocement Cement Composites in Modular and Panelized Construction Systems Glass .   Dynamic Response Dynamic Seismic Analysis of RCC Building as per IS by Using Dynamic Substructures, Volume 4 Proceedings of the 37th IMAC, A Conference and Exposition on Structural Dynamics Dynamics in .

For dynamic analysis an efficient algorithm for the integration of the equations of motion is needed. Various different techniques are in As is well known, the cost of an analysis relates directly to the size of the time step which has to be used for stability and accuracy. In this paper an unconditionally stable schemeFile Size: KB.   All these papers are peer-reviewed, with excellent quality, and cover the topics of structural stability, structural dynamics, computational methods, wave propagation, nonlinear analysis, failure analysis, inverse problems, non-destructive evaluation, smart materials and structures, vibration control and seismic responses. effects, which are observed when one stream is supersonic, are due to com- pressibility effects, not density effects, as has been generally supposed. 1. Introduction Several years ago we undertook to build an experimental facility in which to study plane turbulent mixing layers between gases of different molecular Size: 7MB. Experimental characterization of the dynamic failure behavior of mortar under impact loading D. L. Grote, S. W. Park,a) and M. Zhoub) The George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia ~Received 24 July ; accepted for publication 16 November !

A Combined Experimental and Theoretical Study of Conformational Preferences of Molecular Semiconductors NBO analysis and on the challenges for addressing the multiple interactions between two chromophore fragments. In our com-putational study we rely primarily on the energetics of the. To address these limitations, an experimental approach to modal analysis was developed yielding results which can be used either as a model by itself, or to validate and improve the FE models [2]. The resulting Experimental Modal Analysis (EMA) approach has become a standard element of the mechanical product design and engineering Size: KB. the relevant dynamic pier and soil effects. Static and dynamic contributions of the soil resistance on embedded pile caps are also incorporated into the models. Dynamic analysis results of the calibrated models such as time histories of pier displacement, soil forces on the cap and seal, pile shear and pile deflected shapes are compared with. NONLINEAR ANALYSIS OF CONCRETE STRUCTURESt strain-softening effects are included in the compres- sion and the tensile regions. A particularly valuable property of the model is that it is defined by a number preted against laboratory experimental results. An important issue in nonlinear analysis is the File Size: 1MB.

Experimental and theoretical analysis of dynamic effects in cement storage silos by Hamdy Hessien Abd-el-Rahim Download PDF EPUB FB2

The experimental results from large scale silos in Poland and Germany are shortly described. The silos in Poland were made from the reinforced concrete. The silos in Germany and Norway were steel and aluminium ones. Special attention was paid Cited by: 1.

This article deals with the study of a mixture of a cement mortar with a phase change material. We performed together an experimental analysis and a theoretical modeling of the sample associated with transient simulation of its behavior when a heating or a cooling is imposed to this later by: Theoretical and Experimental Dynamic Analysis of / Vol.

XXV, No. 3, July-September ABCM The assembly of the global matrices, next step for the solution of the problem, is done by the package using the equation. Finally, the experimental procedures combine ad-and desorption processes as well as static and dynamic methods, thus (partially) ignoring storage hysteresis, air.

The authors are unaware of any report on high-speed tests of any kinds of beam–column joints. Aiming to fill this void to some extent, this paper presents the results of an extensive experimental programme consisting of static and dynamic tests on gravity-designed RC Cited by: In the statics analysis performed with SAP, the least plate thicknesses needed for silos surfaced with Grade 30 and Grade 55 steel were found to.

Due to similar variations of the wall pressure for different stored heights, only some field experimental data from Yuan [] (No. 4 and No. 7 silos for the first and second groups, as well as No. 8 silo for the first group) and from Chen [] (No. 4 silo for the first group) are adopted to make the following comparisons Comparisons of the Results from Different CriteriaAuthor: Shanshan Sun, Junhai Zhao, Experimental and theoretical analysis of dynamic effects in cement storage silos book Zhang.

Experimental studies of the dynamic behavior of historic masonry structures reinforced with composite materials are rare [18–20] and the investigation of FRP reinforcement applied to vaulted structures under dynamic test conditions has not yet been addressed, this study. The structural analysis focuses on the changes occurring in the behavior of a physical structure under observation when provided with a force or in case of structures.

Experimental and theoretical studies of explosive-induced large dynamic and permanent deformations of simple structures Paper presents the results of a coordinated experimental-theoretical research program designed to develop methods for predicting large elastic-plastic dynamic and permanent deformations of shells under dynamic-loading conditionsCited by: To investigate the structural performance of this system, an extensive experimental testing program for ceiling and wall panels subjected to static and dynamic loadings was conducted.

The load-deflection curves were obtained for beam and shear wall elements and wall elements under transverse and axial loads, by: 1. Complex bridges will inevitably have cracks in operation. Dynamic characteristics with crack structures have been researched central issues. In the past, few researches were conducted from the whole structure of bridges with multi-cracks.

In the meanwhile, related experimental research and systematic numerical simulation were lacking. In addition, researches on cracks seldom Cited by: An Experimental Analysis on the Effects of Manufactured Sand on the Compressive Strength of Concrete Dr. Siva Sankar Reddy1, A.B.S Natural river sand is widely used as fine aggregates in preparation of conventional cement mortar.

Due to extraction in excess, natural sand has become a scarce material and it has to be preserved. Author: T. Siva Sankar Reddy, A. Dadapeer. The book provides unique insight into: Coupling thermal-mechanical constitutive relation of concrete Exceptional analyses of beams and columns of rectangular section with three surfaces and two adjacent surfaces exposing to high temperature Measurement and analysis of redistribution of internal forces of statically indeterminate structure.

The effective-weight coefficients thus computed from the experimental data appear to confirm the percent value given as a requirement by the "Standard Recommended Practice for Design and Construction of Concrete Bins, Silos, and Bunkers for Storing Granular Materials (ACI )(Revised ).".

The dynamic characterization of cement-based materials under high strain rates is fundamental to understand the material behavior in case of heavy earthquakes and dynamic events. Abram’s law, which was originally formulated for cement-based materials under static loading, is not directly applicable to the dynamic loading condition.

This work investigates influence of damage in reinforced concrete (RC) structures on their dynamic properties through modal testing and non-linear finite element (FE) analysis. Five RC beams were designed with the fundamental flexural mode frequencies in the range of – Hz for the uncracked state.

Mechanical properties of concrete, such as static and dynamic elastic. Many structures and buildings such as nuclear power station and chemical plant are often subjected to impact and explosive loadings.

The understanding of material response to highamplitude, short-duration, impulse loads is very important, dynamic behavior of concrete under high strain rate has been paid much attention to. In the present paper, experimental Cited by: 3. The exploitation and application of recycled concrete are more and more extensive in latest years.

But the research on the mechanics characteristic of recycle concrete under cyclic loading is very little. Six types of recycled concrete specimens were made in laboratory. After they were cured for a certain age, we have made a series of cycling loading tests on by: 3.

The Analysis of Silo Structures Subject to Eccentric Discharge, Proc., 2nd Int. Conf. on Design of Silos for Strength and Flow, Stratford-upon-Avon,J.

Sulfate corrosion is one of the most important factors responsible for the performance degradation of concrete materials. In this paper, an accelerated corrosion by a sulfate solution in a dry-wet cycle was introduced to simulate the external sulfate corrosion environment.

The deterioration trend of concrete strength and development law of sulfate-induced concrete corrosion depth Cited by: 9. The American Concrete Institute.

Founded in and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals.

The performed analysis consists of a dynamic analysis of a cable-stayed S-form footbridge of about m span over the river Ijzer in the city of Kortrijk (Belgium). The study of the effects caused by human excitation on structures has gained a significant evolution during the last few years.

The increasedFile Size: KB. The limiting contact friction between sand and steel, cement mortar, graphite, and teflon surfaces was measured in the laboratory.

The coefficients of (wall) friction were obtained using static and dynamic loadings with particular reference to conditions at the time slip was by: Structural dynamics is a type of structural analysis which covers the behavior of a structure subjected to dynamic (actions having high acceleration) loading.

Dynamic loads include people, wind, waves, traffic, earthquakes, and structure can be subjected to dynamic loading. Dynamic analysis can be used to find dynamic displacements, time history, and modal analysis. Introduction This document presents the description of the dynamic analysis methods applied in Robot.

The theoretical background details and examples are included in the appendices. This section is not instructional and is not aimed at detailing the Robot interface. It expounds the main ideas realized in this program. Most of the dynamic methods in Robot are based on modal.

experimental analysis and the finite element one. Some parameters have been already identified and concern with Young’s modulus, the hypothesis of rigid or flexible diaphragms, and the effects of masonry infill.

2 Experimental modal analysis Several studies in the civil engineering field concern with the theme of dynamic. Note that, with a substantial proportion of the raw mix being CaCO 3, heating either in a kiln or in a laboratory furnace evolves some 35% by weight as CO 2; this results in a requirement of approximately T of raw materials to produce 1T of cement, and also requires that analytical data be clearly distinguished between "raw" and "ignited" basis.

# Society for Experimental Mechanics Abstract We describe an experimental technique to study the dynamic behavior of complex soft materials, based on high-speed microscopic imaging and direct measurements of dynamic forces and deformations.

The setup includes high sensitivity dynamic displacement measurements based on geometric moiré File Size: 2MB. m long pipeline of mm diameter located at the experimental mining research station in considerable underpressure can develop inside the silo due to dynamic effects and due to cooling Calculation of Theoretical Gas Density - Clinker and Cement Microscopical Examination of Portland Cement and Clinker - Clinker and Cement.

A COMPARATIVE ANALYSIS OF THE EFFECT ON CONCRETE BY PARTIAL REPLACEMENT OF CEMENT BY SILICA FUME. Mr. Iliyas A. Kapadiya. HOD, Civil Engineering Department, B & B Institute of Technology, Anand, Gujarat, India. ABSTRCT: In this review paper covered literature reviews related to pervious concrete and effects of FlyFile Size: 4MB.Vibration Analysis and Structural Dynamics for Civil Engineers: Essentials and Group-Theoretic Formulations is relevant to instances that involve significant time-varying effects, including impact and sudden movement.

It explains the basic theory to undergraduate and graduate students taking courses on vibration and dynamics, and also presents Cited by: 4.We present precise and reproducible mean pressure measurements at the bottom of a cylindrical granular column.

If a constant overload is added, the pressure is.