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Simplified Analytical Tools For Impact And Impulsive Loading Analysis Of Reinforced Concrete Structures
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Book Synopsis Simplified Analytical Tools for Impact and Impulsive Loading Analysis of Reinforced Concrete Structures by : Andac Lulec
Download or read book Simplified Analytical Tools for Impact and Impulsive Loading Analysis of Reinforced Concrete Structures written by Andac Lulec and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The analysis of reinforced and prestressed concrete elements under blast and impact loading is drawing the interest of many researchers due to increasing number of natural or human-made hazards that require attention. The analysis methods used are mainly based on either simplified single degree-of-freedom methods or highly sophisticated and complex hydrocodes. Although single degree-of-freedom methods are commonly used by designers for practical reasons, they are incapable of providing detailed results such as deformed shapes and crack maps. Additionally, since they require simplification of the structure to a single degree-of-freedom system, they are difficult to apply to complex geometries. On the other hand, hydrocodes overcome the limitations associated with the simplification of the structure. However, they require highly detailed models which require significantly increased modelling and computational time. Moreover, the accuracy of blast and impact analyses with hydrocodes heavily relies on the material input parameters which are not commonly known. Thus, there remains a need for accurate, simplified and reliable tools for analysis of reinforced and prestressed concrete subjected to blast and impact loading. The VecTor family of nonlinear finite element programs, using a macro-element smeared rotating crack approach, has been shown to be accurate in predicting the response of shear-critical structures under quasi-static conditions. In this study, two members of this suite, VecTor3 and VecTor6, were adapted for the blast and impact analyses of reinforced and prestressed concrete structures in 3D and axisymmetric conditions, respectively. The results obtained from the simulations were close to those experimentally observed. Additionally, a semi-analytical formula for the prediction of perforation velocity from missile impact was developed. The formula, which is based on the Modified Compression Field Theory, considers the influence of longitudinal and shear reinforcement in the target differently from other commonly used empirical formulae. The formula was validated with numerous missile impact data available in the literature, and good accuracy was found.
Book Synopsis Towards Simplified Tools for Analysis of Reinforced Concrete Structures Subjected to Impact and Impulsive Loading by : Heather Trommels
Download or read book Towards Simplified Tools for Analysis of Reinforced Concrete Structures Subjected to Impact and Impulsive Loading written by Heather Trommels and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Response of Structures Under Extreme Loading by : Venkatesh K.R. Kodur
Download or read book Response of Structures Under Extreme Loading written by Venkatesh K.R. Kodur and published by DEStech Publications, Inc. This book was released on 2015-07-01 with total page 1014 pages. Available in PDF, EPUB and Kindle. Book excerpt: Original research on performance of materials under a wide variety of blasts, impacts, severe loading and fireCritical information for protecting buildings and civil infrastructure against human attack, deterioration and natural disastersTest and design data for new types of concrete, steel and FRP materials This technical book is devoted to the empirical and theoretical analysis of how structures and the materials constituting them perform under the extreme conditions of explosions, fire, and impact. Each of the 119 fully refereed presentations is published here for the first time and was selected because of its original contribution to the science and engineering of how materials, bridges, buildings, tunnels and their components, such as beams and pre-stressed parts, respond to potentially destructive forces. Emphasis is placed on translating empirical data to design recommendations for strengthening structures, including strategies for fire and earthquake protection as well as blast mitigation. Technical details are provided on the development and behavior of new resistant materials, including reinforcements, especially for concrete, steel and their composites.
Book Synopsis Ultimate Capacity Evaluation of Reinforced Concrete Slabs Using Yield Line Analysis by :
Download or read book Ultimate Capacity Evaluation of Reinforced Concrete Slabs Using Yield Line Analysis written by and published by . This book was released on 1995 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: Yield line theory offers a simplified nonlinear analytical method that can determine the ultimate bending capacity of flat reinforced concrete planes subject to distributed and concentrated loads. Alternately, yield line theory, combined with hinge rotation limits can determine the energy absorption capacity of plates subject to impulsive and impact loads. This method is especially useful in evaluating existing structures that cannot be qualified using conservative simplifying analytical assumptions. Typical components analyzed by yield line theory are basements, floor and roof slabs subject to vertical loads along with walls subject to out of plant wall loads. One limitation of yield line theory is that it is difficult to evaluate some mechanisms; this is aggravated by the complex geometry and reinforcing layouts commonly found in practice. A yield line evaluation methodology is proposed to solve computationally tedious yield line mechanisms. This methodology is implemented in a small PC based computer program that allows the engineer to quickly evaluate multiple yield line mechanisms.
Book Synopsis Developments in Mechanics of Structures and Materials by : Andrew J. Deeks
Download or read book Developments in Mechanics of Structures and Materials written by Andrew J. Deeks and published by Taylor & Francis Group. This book was released on 2005 with total page 708 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Pressure-impulse Diagrams Using Finite Element Analysis for Reinforced Concrete Slabs Subjected to Blast Loading by : Jitesh Kumar Reddy Nalagotla
Download or read book Pressure-impulse Diagrams Using Finite Element Analysis for Reinforced Concrete Slabs Subjected to Blast Loading written by Jitesh Kumar Reddy Nalagotla and published by . This book was released on 2013 with total page 93 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reinforced concrete slab systems are widely used in protective structures designed to resist blast events. Blast events subject structures to high pressure and impulse loads. The magnitude of blast load experienced by a structural element is directly related to the exposed area. Hence protection of reinforced concrete slabs and walls, which constitute the maximum exposed area of a structure when subjected to blast loads, is of great importance. The main purpose of the project is to study the non-linear response of reinforced concrete slabs when subjected to impact and blast loading. Blast loading comprises of impulsive, dynamic and quasi-static loading conditions. And the performance of reinforced concrete slabs subjected to these loads is highly dependent upon the reinforcing steel provided in the slab. Hence a comprehensive analysis is performed on a representative slab panel with varying reinforcement. Due to the nature of the blast loading analysis method used influences the slab response significantly. Hence the slab response was predicted and compared using finite element (FE) and single degree of freedom (SDOF) methods. An advanced finite element modeling tool, LSDYNA and a commonly used SDOF analysis tool, SBEDS are employed for the purpose of analysis. A parametric analysis is conducted to develop Pressure-Impulse (PI) curves for different damage levels. Curve fit analysis was performed to characterize the PI curves generated from FE method. Conclusions and future work recommendations are presented for design of reinforced concrete slabs for blast protection based upon the research are presented and discussed.abstract.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1986 with total page 876 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Safety, Reliability, Risk and Life-Cycle Performance of Structures and Infrastructures by : George Deodatis
Download or read book Safety, Reliability, Risk and Life-Cycle Performance of Structures and Infrastructures written by George Deodatis and published by CRC Press. This book was released on 2014-02-10 with total page 1112 pages. Available in PDF, EPUB and Kindle. Book excerpt: Safety, Reliability, Risk and Life-Cycle Performance of Structures and Infrastructures contains the plenary lectures and papers presented at the 11th International Conference on STRUCTURAL SAFETY AND RELIABILITY (ICOSSAR2013, New York, NY, USA, 16-20 June 2013), and covers major aspects of safety, reliability, risk and life-cycle performance of str
Book Synopsis Encyclopedia of Continuum Mechanics by : Holm Altenbach
Download or read book Encyclopedia of Continuum Mechanics written by Holm Altenbach and published by Springer. This book was released on 2020-01-04 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Encyclopedia covers the entire science of continuum mechanics including the mechanics of materials and fluids. The encyclopedia comprises mathematical definitions for continuum mechanical modeling, fundamental physical concepts, mechanical modeling methodology, numerical approaches and many fundamental applications. The modelling and analytical techniques are powerful tools in mechanical civil and areospsace engineering, plus in related fields of plasticity, viscoelasticity and rheology. Tensor-based and reference-frame-independent, continuum mechanics has recently found applications in geophysics and materials.
Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1977 with total page 918 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Computational Modelling of Concrete Structures by : Nenad Bicanic
Download or read book Computational Modelling of Concrete Structures written by Nenad Bicanic and published by CRC Press. This book was released on 2014-03-04 with total page 1120 pages. Available in PDF, EPUB and Kindle. Book excerpt: The EURO-C conference series (Split 1984, Zell am See 1990, Innsbruck 1994, Badgastein 1998, St Johann im Pongau 2003, Mayrhofen 2006, Schladming 2010, St Anton am Alberg 2014) brings together researchers and practising engineers concerned with theoretical, algorithmic and validation aspects associated with computational simulations of concrete and
Download or read book Energy Research Abstracts written by and published by . This book was released on 1994 with total page 880 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Analytical Load-deflection Behavior of Slender Load-bearing Reinforced Concrete Walls by : Lujain Alkotami
Download or read book Analytical Load-deflection Behavior of Slender Load-bearing Reinforced Concrete Walls written by Lujain Alkotami and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Nearly 790 million square feet or approximately 11,000 to 12,000 buildings are constructed using tilt-up concrete panels per year since 2007 according to the Tilt-Up Concrete Association. In Tilt-Up panel design P-delta effects control slender concrete wall panel design. Therefore, understanding the nonlinear deflection behavior of these walls is the first step in refining their design, which may make them more sustainable by using less material. The American Concrete Institute (ACI) 318 Building Code Requirements for Structural Concrete provisions for slender vertical wall panels take into consideration the self-weight of the panel along with uniformly distributed lateral wind pressure in estimating the mid-height deflection. In doing so, the Branson deflection equation is used to compute central lateral displacement while adjusting for the effect of axial force. In this study, a more rigorous formulation is proposed taking into account the axial force effect on the moment curvature calculation and integration to yield more accurate load-deflection values. In this formulation, the stiffness variation along the slender wall panel allowing for un-cracked, post cracked and post yielded regions was taken into consideration. Accordingly, the full analytical load-deflection response is made available for the designers based on accurate simplifying assumptions. The developed equation is used to compare the present analytical results to some available experimental results along with the predictions of other deflection equations proposed in the literature such as the latest ACI 318, Branson and the Bischoff effective moment of inertia equations. The experimental results are full-scale panel testing data conducted by a joint venture of the Southern California Chapter of ACI and SEAOC. These results reflect representative stiffness variation of the panels beyond cracking. More specifically, the latest ACI 318 linear moment-deflection expression will be examined against the present equation that considers less simplifying assumptions. A parametric study is extended for the purpose of further proposing a simplified equation based on the rigorous approach.
Book Synopsis Abstract Journal in Earthquake Engineering by :
Download or read book Abstract Journal in Earthquake Engineering written by and published by . This book was released on 1996 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1975 with total page 978 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bulletin by : Welding Research Council (U.S.)
Download or read book Bulletin written by Welding Research Council (U.S.) and published by . This book was released on 1979 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fracture Mechanics of Concrete Structures by : Folker H. Wittmann
Download or read book Fracture Mechanics of Concrete Structures written by Folker H. Wittmann and published by . This book was released on 1995 with total page 808 pages. Available in PDF, EPUB and Kindle. Book excerpt:
