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Showing 1 to 20 of 35 for “"Reliability-based Design"”.
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Reliability-based design of tunnel support systems
Recent developments of tunnelling technology have led to the construction of many tunnels, not only in rural areas, but also in cities. In particular, tunnel construction in cities requires very high standards of safety, since failure can cause the loss of many human lives as well as damage of …
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Reliability-based design of a retaining wall
… study is to develop a procedure for the optimum design of a retaining wall by using the reliability theory. Typical gravity retaining walls with four different heights were selected in this study. The walls were designed first to satisfy the conventional design criteria, and later the safety …
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System Reliability-Based Design and Multiresolution Topology Optimization
… to overcome technical challenges in applying design and topology optimization techniques to large-scale structural systems with uncertainties. The specific goals of this dissertation are: (1) to develop an efficient scheme for topology optimization; (2) to introduce an efficient and accurate …
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Reliability-Based Design Optimization of Nonlinear Beam-Columns
… ultimate strength, structural optimization and reliability analysis using ultimate strength analysis, and Reliability-Based Design Optimization (RBDO) of the nonlinear beam-columns. The ultimate strength analysis is based on nonlinear beam theory with material and geometric nonlinearities. …
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A reliability based design procedure for wood pallets
… United States, recognized a need for a rational design methodology, based upon engineering principles, to ensure consistent safety and economy in pallets of any geometry. To satisfy this need a cooperative research project between Virginia Tech, the U. S. Forest Service, and the National Wooden …
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Hybrid adaptive sequential sampling for reliability-based design optimization
To reduce the cost for reliability analysis and optimization of complex engineering systems, surrogate models can be used to replace expensive physical models. One of the critical tasks of employing surrogate models for system design optimization is to develop an accurate surrogate model …
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Optimal reliability-based design of bulk water supply systems
Bulk water supply systems are usually designed according to deterministic design guidelines. In South Africa, design guidelines specify that a bulk storage reservoir should have a storage capacity of 48 hours of annual average daily demand (AADD), and the feeder pipe a capacity of 1.5 times AADD …
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Analysis and Reliability-Based Design of Columns With Random Parameters
Made available in DSpace on 2015-05-12T22:37:15Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 7219932.PDF: 6352650 bytes, checksum: bc8a28e906258258c801ceac4ea1f74e (MD5) Previous issue date: 1972
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Optimal reliability-based design of bulk water supply infrastructure-incorporating pumping systems
The optimal design of a bulk water supply system is centered on two major objectives: cost efficiency and the formation of a design solution that is appropriate for the conditions in which the system is to be implemented. The currently employed CSIR (2000) design guidelines utilise deterministic …
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Computer aided reliability based design of ring-stiffened cylindrical shells under external pressure
… Level I code format is proposed for the buckling design of ring-stiffened cylindrical shells under external pressure. Depth independent partial safety factors to be applied to the resistance (collapse pressures), are proposed for the four relevant collapse modes (Interframe Shell Collapse, Frame …
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Reliability-based Design Optimization of a Nonlinear Elastic Plastic Thin-Walled T-Section Beam
… is performed to investigate the application of reliability-based design optimization (RBDO) approach to design elastic-plastic stiffener beams with Tsection. The objectives of this study are to evaluate the benefits of reliability-based optimization over deterministic optimization, and to …
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Reliability based design methodology incorporating residual strength prediction of structural fiber reinforced polymer composites under stochastic variable amplitude fatigue loading
… dissertation furthers the state of the art for reliability-based design of composite structures subjected to high cycle variable amplitude (spectrum) fatigue loads. The focus is on fatigue analyses for axially loaded fiber reinforced polymer (FRP) composites that contain a significant proportion …
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Reliability-Based Topology Optimization with Analytic Sensitivities
It is a common practice when designing a system to apply safety factors to the critical failure load or event. These safety factors provide a buffer against failure due to the random or un-modeled behavior, which may lead the system to exceed these limits. However these safety factors are not …
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Reliability based criteria for cold-formed steel members
<p>"In the design of steel buildings, the "Allowable Stress Design (ASD)" method has long been used for cold-formed steel structural members in the United States and other countries. In this approach, member forces, or moments, determined on the basis of working loads should not exceed the …
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Stability of Embankments Founded on Soft Soil Improved with Deep-Mixing-Method Columns
… countries. The current state of practice is that design is based on deterministic analyses of settlement and stability, even though deep mixed materials are highly variable. Conservative deterministic design procedures have evolved to limit failures. Disadvantages of this approach include (1) …
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Predicting the static bending behavior of pallets with panel decks
… panel decks, there is a need for a standardized, reliability-based design system, PDS-PANEL, to assist in the design and manufacture of panel-deck pallets. The primary objective of this research was to develop finite element models which predict the static bending behavior of pallets with at least …
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System reliability optimization of aircraft wings
System reliability based design of aircraft wings is studied. A wing of a light commuter aircraft designed according to the FAA regulations is compared with one designed by system reliability optimization. Both the level III, and the advanced first order, second moment (AFOSM) method are employed …
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Scalable, probabilistic simulation in a distributed design environment
… product and technology systems throughout their design cycles. During the process of integration, uncertainties arise from many sources, such as material properties, manufacturing variations, inaccuracy of models and so on. Concerns about uncertainty and robustness in large-scale integrated …
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Quantitative risk assessment in drill casing design for oil and gas wells
In the oil and gas industry the use of a reliability based design is becoming increasingly important because of the increasingly requirements for safety and economy. In contrast to the traditional working stress design (WSD), Quantitative Risk Assessment (QRA) provides the methodology for …
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