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Full-Text Articles in Engineering
A Change Analysis Tool For Service-Based Business Processes, Yi Wang, Jian Yang, Weiliang Zhao
A Change Analysis Tool For Service-Based Business Processes, Yi Wang, Jian Yang, Weiliang Zhao
Faculty of Engineering - Papers (Archive)
Change management is critical and challenging in the context of service-oriented computing paradigm when multiple services are supported by a single business process [1]. The complex dependencies between services and business processes have not been carefully investigated in the existing work. In particular, it is still lacking of an effective tool to support change impact analysis for coupled services and business processes. In this demo, we present a tool: Service Change Analyzer (SCA) for enabling impact analysis when a change happens. The SCA is built up based on our previous work for change analysis, in which a service-oriented business process …
Seismic History Analysis Of Asymmetrical Adjacent Buildings With Soil-Structure Interaction Consideration, Mehmet Uz, Muhammad N. S Hadi
Seismic History Analysis Of Asymmetrical Adjacent Buildings With Soil-Structure Interaction Consideration, Mehmet Uz, Muhammad N. S Hadi
Faculty of Engineering - Papers (Archive)
The seismic response history analysis of multi-storey asymmetric adjacent buildings with soil-structure interaction (SSI) during impact is investigated in this study. The coupled multi-degree of freedom modal differential equations of motion for the two way asymmetric shear buildings are derived and solved using a step by step solution by the fourth-order Runge-Kutta method with impact and without impact. The SSI forces are modelled in the form of the frequencyindependent soil springs and dashpots. A numerical example of two-way asymmetric four-storey adjacent buildings under the variation of the important SSI system parameters such as the large and small SSI effects is …
Vertical Drain Consolidation Analysis In One, Two And Three Dimensions, Rohan T. Walker
Vertical Drain Consolidation Analysis In One, Two And Three Dimensions, Rohan T. Walker
Faculty of Engineering - Papers (Archive)
A new method, the g or 'eta' method, for modeling consolidation by vertical and horizontal drains is presented. The approach is applicable in one, two and three dimensional as well as axisymmetric cases. Material and geometry properties are familiar from unit cell vertical drain analysis and are consistent across dimensions. An uncoupled finite element method (FEM) program is used to test the efficacy of the new approach. Because drains are not explicitly modeled in the finite element mesh, mesh complexity and computational time are greatly reduced. Unlike existing plane strain matching methods there is no special transformation of permeability or …
Flac3d Analysis On Soil Moving Through Piles, E H. Ghee, W D. Guo
Flac3d Analysis On Soil Moving Through Piles, E H. Ghee, W D. Guo
Faculty of Engineering - Papers (Archive)
Piles may be utilized as deep foundations or employed to support offshore structures, which may be subjected to passive loading due to lateral soil movements. The safety of the piled foundations depends on the additional stresses induced. This issue has been investigated recently by conducting model tests on single piles and on pile groups with a new apparatus developed by the authors. Typical test results were analysed and reported previously. In this paper three-dimensional finite difference analyses are reported: (1) to predict the results of two model tests (with and without axial load); and (2) to investigate the effect of …
Cogging Force Analysis Of A Slotless Tubular Linear Motor With Finite Stator, Philip A. Commins, Jeffrey W. Moscrop, Christopher D. Cook
Cogging Force Analysis Of A Slotless Tubular Linear Motor With Finite Stator, Philip A. Commins, Jeffrey W. Moscrop, Christopher D. Cook
Faculty of Engineering - Papers (Archive)
Permanent magnet tubular linear motors have shown potential for use as direct drives in high precision applications such as machine tools. These devices have the ability to overcome or reduce many of the fundamental mechanical properties that limit the precision performance of traditional rotary to linear translation mechanisms, such as the ball screw. However, the cogging of the motor must be minimised for high precision applications. Previous work has assumed an infinite stator length, but this approach has limitations. This paper investigates the cogging force of a slotless tubular motor with a stator of finite length using finite element analysis. …
Analysis Of Bloated Droplet Theory Using Steelmaking Process Models, N Dogan, G A. Brooks, M A. Rhamdhani
Analysis Of Bloated Droplet Theory Using Steelmaking Process Models, N Dogan, G A. Brooks, M A. Rhamdhani
Faculty of Engineering - Papers (Archive)
There is significant evidence that droplets generated in steelmaking "bloat" due to the inability of gas generated from the decarburisation reaction to escape from the surface of liquid metal droplets. A model to describe this behavior was developed by Brooks, Subagyo, Coley and Pan based on their own experimental work and calculations and previous studies by Fruehan and co-workers. This approach has been successfully incorporated into an overall process model of oxygen steelmaking. A unique feature of this model is an evaluation of the decarburization kinetics of individual metal droplets in the emulsion and comparing this to the overall kinetics …
Analysis Of Microstructure Effects On Edge Crack Of Thin Strip During Cold Rolling, Haibo Xie, Zhengyi Jiang, W Y Daniel Yuen
Analysis Of Microstructure Effects On Edge Crack Of Thin Strip During Cold Rolling, Haibo Xie, Zhengyi Jiang, W Y Daniel Yuen
Faculty of Engineering - Papers (Archive)
Edge cracks in cold rolling of the thin strip affect the strip quality and productivity significantly. In this study, an experimental and mechanical investigation on microstructures has been carried out to study the edge crack formation during cold rolling of the thin strip. The effects of the feed material microstructures on the edge crack evolution were studied employing optical microscopy and scanning electron microscopy (SEM). Experimental observation indicates that fine grain occurs in hot-rolled microstructure and coarse grain is produced in ferritic rolled microstructure. Different grain sizes affect significantly the formation mechanics of the microcrack, crack initiation, and orientation of …