Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 49 for “"Reduction Factor"”.
-
The Areal Reduction Factor (ARF) : a multifractal analysis
The Areal Reduction Factor (ARF) [eta] is a key parameter in the design for hydrologic extremes. For a basin of area A, [eta](A, D, 7) is the ratio between the area-average rainfall intensity over a duration D with return period T and the point rainfall intensity for the same D and T. Besides …
-
The Structure of The Carbon Dioxide Reduction Factor, a Novel Carbon Carrier in Methanobacterium Thermoautotrophicum
Made available in DSpace on 2014-12-16T06:12:51Z (GMT). No. of bitstreams: 1 8409984.pdf: 3721066 bytes, checksum: eb26f8d46b1910adac3f827266c16bb5 (MD5) Previous issue date: 1983
-
Evaluation of Strength Reduction Factor for Concentrically Braced Frames Based on Nonlinear Single Degree-of-Freedom Systems
<p>Strength Reduction Factor (R-Factor), often referred to as Response Modification Factor, is commonly used in the design of lateral force resisting systems under seismic loading. R-Factors allow for a reduction in design base shear demands, leading to more economical designs. The reduction of …
-
Uplift loaded standing seam roof systems
… It was found that by normalizing the data, a reduction factor could be established for each test set configuration. This reduction factor applies to both the base test and confirming multi-span test in each test set. Three analytical models were applied to predict the failure of the purlin. It …
-
Modeling of Microstructures and Stiffness of Injection Molded Long Glass Fiber Reinforced Thermoplastics
… In various fiber orientation models, a strain reduction factor is usually applied to match the slower fiber orientation evolution observed experimentally. In this research, a variable strain reduction factor is determined locally by the corresponding local flow-type and used in fiber …
-
Developing freeway merging calibration techniques for analysis of ramp metering In Georgia through VISSIM simulation
… performed to determine the effects of the safety reduction factor and the maximum deceleration for cooperative braking parameter on the simulated merging behavior. Results indicated that having both the advanced merging and cooperative lane change setting active produced the best results and that …
-
Improved Prediction of Glass Fiber Orientation in Basic Injection Molding Geometries
… strain closure model) and non-objective (strain reduction factor model) orientation model. The predicted values of the strain reduction factor model showed reasonable agreement with experimentally obtained values of orientation throughout the three-dimensional cavity when using orientation …
-
Reliability-based durability assessment of GFRP bars for reinforced concrete
… of environmental and flexural strength reduction factors, which have minimal experimental validation. Our goal in this research is the development of a Monte Carlo simulation to assess the durability of glass fiber reinforced polymer (GFRP) reinforced concrete designed for flexure. The …
-
A Case Study on Medium and High Rise Timber Buildings
… of the wind components is conducted and a reduction factor is applied to the resonant component. A modified time history response is reapplied to the building and the new straining actions are evaluated. The connection’s hysteresis behavior is evaluated after applying the reduction factor. …
-
Analysis of Slug Tests to Determine Hydraulic Conductivity of Vertical Cutoff Walls
… Rice method, a modified effective radius, and a reduction factor. Both of these new methods provide a more rigorous and accurate estimate of hydraulic conductivity compared to previously available methods. Both new methods are practical and easy to use.
-
Nonlinear Analysis of Plane Frames Subjected to Temperature Changes
… response of structures. The inclusion of the reduction factors for the coefficient of thermal expansion, modulus of elasticity and yield strength is introduced and implemented with the use of temperature-dependent formulas. A comparison of the AISC reduction factor equations to the Eurocode …
-
A conceptual cost estimating computer system for building projects
… also can be used for residential buildings if a reduction factor of 20 to 30 percent is considered. The methodology utilizes tools available between hands, Access 97 the database member of Microsoft Office 97 family and Visual Basic for Application, the child of the Object Oriented Programming …
-
Flexural Behavior of CFRP-Pretensioned Girders
… of loading cycles. The combination of these factors can result in deterioration of highway bridge beams’ serviceability and strength. Beams prestressed with steel are susceptible to corrosion when subjected to environmental exposure. The corrosion of the prestressing steel reduces the beams’ …
-
Vehicle Dynamics Model for Predicting Maximum and Typical Acceleration Rates for Passenger Vehicles
… paper also modifies the model by introducing a reduction factor, which enables the model to predict the typical acceleration patterns for different driver types. The reduction factors for the driving population are shown to follow a normal distribution with a mean of 0.60 and a standard …
-
Determination of axial load and support stiffness of continuous beams by vibration analysis
… mass model or the continuous model. A frequency reduction factor is derived which accounts for the effects of shear deformation and rotatory inertia. Tests are performed on an eight span beam with compressive axial load. Test results show that the models accurately predict frequencies and mode …
-
Thermal non-Newtonian elastohydrodynamic lubrication of line contacts under sliding-rolling and simple sliding conditions
… and non-Newtonian (Ree-Eyring) film thickness reduction factor. Even when thermal effects are small, these formulas can still give a film thickness reduction due to the non-Newtonian effects. Results for the maximum temperatures and traction coefficient are also presented. The pressure …
-
Modeling Fiber Orientation using Empirical Parameters Obtained from Non-Lubricated Squeeze Flow for Injection Molded Long Carbon Fiber Reinforced Nylon 6,6
… flow as an efficient way to determine the strain reduction factor, , and Brownian motion like factor, CI, parameters for short glass fiber polypropylene orientation predictions using the strain reduction factor (SRF) model was extended to use with the LCF/PA 6,6 composite. The 40 weight percent …
-
Resistance Factor for Cold-Formed Steel Compression Members
This research investigates if the LRFD strength reduction factor for cold-formed steel compression members can be increased above its current value of Ï c = 0.85, which was established by the LRFD Cold-Formed Steel Design Manual (1991) on the basis of 264 column tests. The resistance factor in the …
-
Liquefaction Triggering Model for Subduction Zone Earthquakes
… number of equivalent cycles (n_eq) and stress-reduction factor (r_d) have been proposed. The models are developed by regressing site response data obtained from 254 pairs of subduction ground motions and 77 representative soil profiles. To account for tectonic differences and magnitude scaling, …
-
Shear Strength of Full-Scale Prestressed Lightweight Concrete Girders with Composite Decks
… that there should be two different strength reduction factors for the shear design of sand-lightweight concrete depending on which shear design procedures are used in the 2010 AASHTO LRFD Bridge Design Specifications. For the General Procedure as well as the guidelines outline in Appendix B5, …
Page 1 of 3