Journal of Engineering Mechanics

Probabilistic Prognosis of Fatigue Crack Growth Using Acoustic Emission Data

Boris A. Zarate, Juan M. Caicedo, Jianguo Yu, and Paul Ziehl
This paper presents a structural health monitoring methodology that uses Acoustic Emission (AE) features to predict the crack growth in structural elements subjected to fatigue. This allows for the prediction of the failure of the structural element at the current load level. The methodology uses Ba ... [Journal of Engineering Mechanics doi:10.1061/(ASCE)EM.1943-7889.0000414] posted Mon Feb 13, 2012.

Impacts of Epistemic Uncertainty in Operational Modal Analysis

Korhan Ciloglu, Yun Zhou, Franklin Moon, and A. Emin. Aktan
Field experimentation on actual constructed systems demands the consideration of many mechanisms of epistemic and aleatory uncertainty as well as human errors and subjectivity. This is especially true in the case of Operational Modal Analysis (OMA) applications that aim to identify the dynamic prope ... [Journal of Engineering Mechanics doi:10.1061/(ASCE)EM.1943-7889.0000413] posted Mon Feb 13, 2012.

Towards a Fracture Mechanics-Based Design Approach for Unbonded Concrete Overlay Pavements

Minmao Liao and Roberto Ballarini
An illustrative fracture mechanics-based design paradigm is proposed for unbonded concrete overlays (UBCOs), an increasingly popular pavement rehabilitation system, with the ultimate goal of establishing a more rational design procedure than those currently available. To illustrate the advantages of ... [Journal of Engineering Mechanics doi:10.1061/(ASCE)EM.1943-7889.0000412] posted Mon Feb 13, 2012.

Similarity Shapes of a Fully Liquid-Filled Membrane on an Incline

Yoon Rak Choi and Solomon C. Yim
Membranes such as geosynthetic tubes have been widely used in civil construction and as storage tanks. Estimation of the shape, structural tension, and internal pressure are essential for effective and safe usage of these structures. Motivated by a numerical study on the case of a partially liquid-f ... [Journal of Engineering Mechanics doi:10.1061/(ASCE)EM.1943-7889.0000411] posted Mon Feb 13, 2012.

Overturning of Retrofitted Rocking Structures under Pulse-Type Excitations

Elias G. Dimitrakopoulos and Matthew J. DeJong
Numerous existing structures exhibit rocking behavior during earthquakes and there is a continuing need to retrofit these structures to prevent collapse. In addition, while rocking behavior is typically prevented instead of utilized, an increasing number of structures are being designed or retrofitt ... [Journal of Engineering Mechanics doi:10.1061/(ASCE)EM.1943-7889.0000410] posted Sat Feb 11, 2012.

An Engineering Approach for the Evaluation of Mechanical Wear Considering the Experimental Holloman High Speed Test Track

Chad S. Hale, Anthony N. Palazotto, and William P. Baker
This research is directed towards an understanding of the high speed interaction effects that two bodies have on each other. The experimental high-speed test track at Holloman AFB has undergone many design innovations over a span of fifty years. One of the problems that remain in the modern era rela ... [Journal of Engineering Mechanics doi:10.1061/(ASCE)EM.1943-7889.0000409] posted Sat Feb 11, 2012.

On Estimating Rotational Components of Ground Motion Using Data Recorded at a Single Station

Dhiman Basu, Andrew S. Whittaker, and Michael C. Constantinou
Seismic analysis, design and performance assessment of buildings, bridges and safety-related nuclear structures is based on two or three translational components of earthquake ground motion. Although rotational components (rocking and torsional) may contribute significantly to translational and tors ... [Journal of Engineering Mechanics doi:10.1061/(ASCE)EM.1943-7889.0000408] posted Fri Feb 10, 2012.

Reliability-Based Design Optimization of Uncertain Stochastic Systems: Gradient-Based Scheme

H. A. Jensen, D. S. Kusanovic, M. A. Valdebenito, and G. I. Schueller
A method to carry out reliability-based optimization of uncertain structural systems under stochastic excitation is presented in this paper. The approach is based on a nonlinear interior point algorithm and a line search strategy. The associated reliability problems to be solved during the optimizat ... [J. Eng. Mech. doi:10.1061/(ASCE)EM.1943-7889.0000304] published Thu Feb 9, 2012.

The Dynamic Behaviour of Slab Tracks on Homogeneous and Layered Soils and the Reduction of Ground Vibration by Floating Slab Tracks

L. Auersch
The dynamics of slab tracks and floating slab tracks are analysed by multi-beam models for the track and by integration in wavenumber domain for the soil which is modelled as a layered half-space. Frequency-dependent compliances and force transfers are calculated for a great variety of track and soi ... [Journal of Engineering Mechanics doi:10.1061/(ASCE)EM.1943-7889.0000407] posted Sat Jan 21, 2012.

Reviewers

Abstract not available. [J. Eng. Mech. doi:10.1061/(ASCE)EM.1943-7889.0000336] published Fri Jan 13, 2012.

Eliminating Temperature Effect in Vibration-Based Structural Damage Detection

H. F. Zhou, Y. Q. Ni, and J. M. Ko
False-positive or false-negative damage may be signaled by vibration-based structural damage detection methods when the environmental effects on the changes of dynamic characteristics of a structure are not accounted for appropriately. In this paper, a parametric approach for eliminating the tempera ... [J. Eng. Mech. doi:10.1061/(ASCE)EM.1943-7889.0000273] published Fri Jan 13, 2012.

Ultimate Bearing Capacity of Reinforced Concrete Slab Carrying Concentrated Load

Jinxin Gong, Yanqing Zhang, and Shi Han
Yield-line theory is accepted as a method for the design of reinforced concrete structures in many codes. Many guidelines have been provided to find the most possible failure mechanism and the lowest upper solution. Slabs equally reinforced in two normal directions, which fail in a fan mechanism und ... [J. Eng. Mech. doi:10.1061/(ASCE)EM.1943-7889.0000285] published Fri Jan 13, 2012.

Effect of Inclined Soil Layers on Surface Vibration from Underground Railways Using the Thin-Layer Method

Simon Jones and Hugh Hunt
Noise and vibration from underground railways is a documented disturbance for individuals living or working near subways. Numerical models are used to investigate and understand vibration propagation from these underground railways, although the models commonly include simplifying assumptions (i.e., ... [J. Eng. Mech. doi:10.1061/(ASCE)EM.1943-7889.0000292] published Fri Jan 13, 2012.

In-Structure Shock Assessment of Underground Structures with Consideration of Rigid Body Motion

Guowei Ma, Hongyuan Zhou, and Karen Chong
The present study assesses the in-structure shock of an underground structure induced by a nearby subsurface detonation. Both the rigid body motion of the entirely buried structure and the local response of the structural element are considered in characterizing the in-structure shock. Soil-structur ... [J. Eng. Mech. doi:10.1061/(ASCE)EM.1943-7889.0000300] published Fri Jan 13, 2012.

Elastoplastic Damaging Model for Adhesive Anchor Systems. I: Theoretical Formulation and Numerical Implementation

Antonino Spada, Giuseppe Giambanco, and Piervincenzo Rizzo
In this and in the companion paper, the mechanical response of adhesive anchor systems is theoretically and numerically predicted and experimentally observed. The theoretical prediction is on the basis of an elastoplastic damaging model formulated to predict the structural response associated with t ... [J. Eng. Mech. doi:10.1061/(ASCE)EM.1943-7889.0000287] published Fri Jan 13, 2012.

Modeling Fracture and Delamination of Spray-Applied Fire-Resisting Materials under Static and Impact Loads

Mahmud Dwaikat and Venkatesh Kodur
A specially developed two-dimensional cohesive zone finite element (CZFE) scheme is applied to simulate the fracture and delamination phenomena that occur in spray-applied fire-resisting material (SFRM) on steel structures. A cohesive zone material model for the SFRM is introduced and utilized to mo ... [J. Eng. Mech. doi:10.1061/(ASCE)EM.1943-7889.0000290] published Fri Jan 13, 2012.

Erratum for On the Flexural Analysis of Sandwich and Composite Arches through an Isoparametric Higher-Order Model by Sudhakar R. Marur and Tarun Kant

Sudhakar R. Marur and Tarun Kant
Abstract not available. [J. Eng. Mech. doi:10.1061/(ASCE)EM.1943-7889.0000305] published Fri Jan 13, 2012.

Effect of Particle Size on the Characteristics of Sand Jets in Water

Amir Hossein Azimi, David Z. Zhu, and Nallamuthu Rajaratnam
Sand jets in water have extensive engineering applications. A detailed numerical modeling of sand jets in water was conducted at high initial sand concentration using a commercial computational fluid dynamics package (ANSYS CFX 11.0). The results of the numerical simulation were first compared with ... [J. Eng. Mech. doi:10.1061/(ASCE)EM.1943-7889.0000283] published Fri Jan 13, 2012.

Risk Analysis of Fatigue-Induced Sequential Failures by Branch-and-Bound Method Employing System Reliability Bounds

Young-Joo Lee and Junho Song
Various types of structural systems are often subjected to the risk of fatigue-induced failures. If a structure does not have an adequate level of structural redundancy, local failures may initiate sequential failures and cause exceedingly large damage. For the risk-informed design and maintenance o ... [J. Eng. Mech. doi:10.1061/(ASCE)EM.1943-7889.0000286] published Fri Jan 13, 2012.

Ring Beam Stiffness Criterion for Column-Supported Metal Silos

Cem Topkaya and J. Michael Rotter
Cylindrical metal silos are commonly elevated to provide access space beneath to directly discharge the contained materials into transportation systems. Evenly spaced column supports are commonly utilized. In larger silos, the discrete forces from supports are more evenly transferred and distributed ... [J. Eng. Mech. doi:10.1061/(ASCE)EM.1943-7889.0000291] published Fri Jan 13, 2012.

Response of Open Cell Aluminum Foams to Fully Reversed Cyclic Loading

Hernan Pinto, Sanjay R. Arwade, and Patrick Veale
The response of metal foams to fully reversed cyclic loading has been investigated much less than the response to tension-tension and compression-compression cyclic loads. This paper describes tests of open cell aluminum foams that are subjected to fully reversed cyclic loading. Three different dama ... [J. Eng. Mech. doi:10.1061/(ASCE)EM.1943-7889.0000298] published Fri Jan 13, 2012.

Analytical Solution for Long-Wave Reflection by a Rectangular Obstacle with Two Scour Trenches

Jian-Jian Xie, Huan-Wen Liu, and Pengzhi Lin
In this paper, linear long-wave reflection by a rectangular obstacle with two scour trenches of power function profile is explored. A closed-form analytical solution in terms of the first and second kinds of Bessel functions is obtained, which finds two classic analytical solutions as its special ca ... [J. Eng. Mech. doi:10.1061/(ASCE)EM.1943-7889.0000293] published Fri Jan 13, 2012.

Elastoplastic Damaging Model for Adhesive Anchor Systems. II: Numerical and Experimental Validation

Antonino Spada, Piervincenzo Rizzo, and Giuseppe Giambanco
This paper presents the numerical and experimental validation of the analytical elastoplastic damaging model proposed in the companion paper (Part I). The validation was carried out by describing the pullout failure of epoxy adhesive anchors. Pullout tests were simulated numerically and performed ex ... [J. Eng. Mech. doi:10.1061/(ASCE)EM.1943-7889.0000288] published Fri Jan 13, 2012.

Analysis of Turbulent Hydraulic Jump over a Transitional Rough Bed of a Rectangular Channel: Universal Relations

Noor Afzal, A. Bushra, and Abu Seena
The streamwise flow structure of a turbulent hydraulic jump over a rough bed rectangular channel has been investigated. The flow is divided into inner and outer layers, where upstream supercritical flow changes to downstream subcritical flow. The analysis is based on depth averaged Reynolds momentum ... [J. Eng. Mech. doi:10.1061/(ASCE)EM.1943-7889.0000294] published Fri Jan 13, 2012.

Experimental and Analytical Investigation of Service Load Stresses in Cellular Beams

J. R. Yost, D. W. Dinehart, R. M. Hoffman, S. P. Gross, and M. Callow
Cellular beams are expanded I-sections with circular web voids that have been used extensively in Europe, and are currently gaining popularity in the United States. For these expanded I-sections, stresses within the web void projection are the manifestation of primary bending and shear induced Viere ... [Journal of Engineering Mechanics doi:10.1061/(ASCE)EM.1943-7889.0000405] posted Thu Jan 12, 2012.

Free Vibration of Axially-Loaded Shear Beams Carrying Elastically Restrained Lumped Tip Masses via Asymptotic Timoshenko Beam Theory

X. -F. Li
Classical shear beam theory does not consider the rotation of cross section. This paper studies free vibration of axially-loaded shear beams with attached lumped masses at elastically supported ends where rotational motion of cross section is taken into account. By using asymptotic analysis of the T ... [Journal of Engineering Mechanics doi:10.1061/(ASCE)EM.1943-7889.0000403] posted Mon Jan 9, 2012.

Large Deflection Analysis of Plates Stiffened by Parallel Beams with Deformable Connection

E. J. Sapountzakis and I. C. Dikaros
In this paper a general solution to the geometrically nonlinear analysis of plates stiffened by arbitrarily placed parallel beams of arbitrary monosymmetric cross section with deformable connection subjected to arbitrary loading is presented. The plate-beam structure is assumed to undergo moderate l ... [Journal of Engineering Mechanics doi:10.1061/(ASCE)EM.1943-7889.0000402] posted Mon Jan 9, 2012.

Adaptive Configuration Tuned Mass Damper for Mitigation of Rotational Vibrations

R. Mohammadi-Ghazi, A. K. Ghorbani-Tanha, and M. Rahimian
In this paper, an innovative design for an Adaptive Configuration Tuned Mass Damper (ACTMD) is proposed. An ACTMD is a semi-active dynamic vibration absorber by which the undesirable rotational vibration of a structure can be greatly suppressed. It can also be used to attenuate translational vibrati ... [Journal of Engineering Mechanics doi:10.1061/(ASCE)EM.1943-7889.0000400] posted Thu Jan 5, 2012.