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Carrying Capacity - Springer Nature

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Last Updated: 10 September 2022

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Load Carrying Capacity and Vibration Characteristics of PC Box Girders with Damage

Through a laboratory experiment, this research is intended to investigate changes in modal parameters PC box girders as a result of defective grouting and PC tendons failures. According to the loading process, local cracks were dominated around the site of defective grouting and failure of PC tendons, as well as energy-based bending results measured from the load-output curve. A modest relationship was found between the energy-based bending results and the common frequency of 1st and 2nd bending modes.

Source link: https://doi.org/10.1007/978-3-030-93236-7_51


Characterization and Influences of the Load Carrying Capacity of Lightweight Hub Designs of 3D-Printed Gears (16MnCr5, PBF-LB/M-Process)

For efficient, environmentally friendly drive trains, lightweight gear design for gears is becoming more important. Innovative lightweight designs can be produced by P. B. F. -L. M. 's additive manufacturing process. Helical as well as spur gears are 3D-printed out of the case-hardening steel 16MnCr5's case-hardening steel 16MnCr5. The gears are tested for their static, dynamic load carrying capacity, as well as the effect of the lightweight hub on load carrying capacity is determined.

Source link: https://doi.org/10.1007/978-3-662-65216-9_15


Extended calculation method for determining the pitting load carrying capacity of bevel and hypoid gears

The failure modes pitting, scuffing, tooth flank fracture, and the phenomenon micropitting have largely limited the flank load carrying capacity of bevel and hypoid gears. According to the international standard ISO 10300:2014, a first estimate of the flank load carrying capacity can be made based on the macro geometry of the bevel or hypoid gear set. According to method B of ISO 10300:2014, the real geometry of bevel and hypoid gears has been reduced to a virtual cylindrical gear geometry. The load carrying capacity regarding scuffing, micropitting, and tooth flank fracture can be determined by using the virtual cylindrical gear geometry along the route of contact. However, the determination of the pitting load carrying capacity is based on a single representative point in the path of first contact with the virtual cylindrical gear. Along the path of contact of the virtual cylindrical gear geometry, this paper presents an extended estimation scheme for the determination of the pitting load carrying capacity of bevel and hypoid gears. Due to the calculation along the course of contact, the revised method provides a more precise estimate of the pitting load carrying capacity than the older standard calculation method ISO 10300-2:2014, which uses the same input data. In addition, the validation of an extended calculation procedure with calculation results of an intricate validated loaded tooth contact analysis, which is corresponding to method A of ISO 10300-2:2014, is presented.

Source link: https://doi.org/10.1007/s10010-022-00596-w


Residual load carrying capacity of un-stressed RC columns under fire

The present research is carried out to explore the effect of covering, temperature, and fire duration on the residual load carrying capacity of unstressed Reinforced Concrete columns exposed to fire. In addition, the residual compressive strength of plain concrete was determined after being exposed to similar fire durations. The percentage residual load carrying capacity of 30 and 40 mm cover columns is almost identical at both temperatures and fire durations. With the rise in the temperature, the residual load carrying capacity diminished. The concrete's compressive strength of concrete concrete's results are in good agreement with the column findings.

Source link: https://doi.org/10.1007/s41024-022-00227-5


Investigation of the load-carrying capacity of one-way hybrid fiber-reinforced concrete slabs

The aim of the current research is to investigate the effects of the steel fibers and polypropylene fibers on the overall response of one-way only supported reinforced concrete slabs at the ultimate limit state individually, experimentally and numerically. Based on the latest test results, the slab specimen, SM6 with 0. 7% SF and 0. 9% PPF ratios has the highest value, while the slab specimen, SM16, with 0. 9% SF and 0. 9% PPF ratios, has the lowest load-carrying capacity. Moreover, a good relationship has been established between the FEA and experimental results regarding the load-u2013deflection curves and specimen crack patterns.

Source link: https://doi.org/10.1007/s41062-022-00919-4


Effect of different width ratio and transversal link pattern on the load carrying capacity of partially encased composite column

One of the recent developments in the building industry is partially encased steelu2013concrete composite column by pouring concrete in between the empty spaces of two flanges of rolled steel H-sections for increasing construction quality and efficiency. The present study focused on the partially encased composite column by varying flange width to flange thickness ratio, flange width to web thickness ratio, and using different types of transversal reinforcement under axial load. The load-carrying capacity of the partially enclosed composite column had increased gradually as the ratio of the width of the flange to the thickness of the web's thickness increased, as the ratio of the flange's thickness to the thickness of the web increased. The X-shape link had a greater peak load-carrying capacity than the horizontal and Z-shape links among the three types of transversal reinforcements, with a higher peak load-carrying capacity than the horizontal and Z-shape links.

Source link: https://doi.org/10.1007/s42107-022-00498-w


Estimating statewide carrying capacity of bobcats (Lynx rufus) using improved maximum clique algorithms

Context of maximum clique studies can determine landscape carrying capacity for populations of territorial wildlife. However, MCA has not been widely adopted for wildlife applications, mainly due to computational limitations, and software wildlife biologists may be difficult to use. In Indiana, USA, we extended MCA by using a vertex cover algorithm to determine N _ k over a wide, continuous spatial scale for female bobcats. We introduced uncertainty by determining confidence intervals for N _ k through five thresholds of habitat suitability using ten replicate suitability maps from bootstrapped databases. Results Means of Female bobcats in Indiana with habitat suitability thresholds ranging from 539 to 1200 territories. Both the predictive and greedy algorithms produced realistic estimates of maximum cliques in areas that were too large to be computed with the vertex cover algorithm.

Source link: https://doi.org/10.1007/s10980-022-01460-6


A Single-Phase AC HTS Cable with High Current-Carrying Capacity and Low Loss

Today, several HTS cable projects around the world have been demonstrated and running in real grids. AC HTS cables have the advantages of high current capacity, small size, and low loss, which can contribute to increased grid stability and economic competitiveness. However, the current-carrying capacity of the HTS cables is limited, which makes it impossible to satisfy some of the shorter-distance high-demand occasions. This paper introduces a novel multi-layer cable based on the principle of uniform current, in which the conductor and shielding layers are sequentially laid out. The effect of the magnetic field between the superconducting layers has been greatly reduced, allowing J_c J c and hysteresis loss to be minimized. A 2D simulation model is used to measure and compare magnetic field distribution and hysteresis loss between the conventional and the latest HTS cables.

Source link: https://doi.org/10.1007/s10948-022-06305-6


A quantitative analysis method for the degree of coupling coordination between drinking water carrying capacity and population spatial aggregation

The degree of coupling coordination between Drinking Water Carrying Capacity and Population Spatial Agglomeration is a key indicator for determining sustainable growth of society. However, new research using quantitative modeling techniques to investigate links between the DWCC and the PSA is extremely rare. This paper proposes a Comprehensive Evaluation Model of Drinking Water Carrying Capacity, a Population Spatial Aggregation Index Model, and a Coupling Coordination Model of Human Water Relationship in order to provide theoretical and methodological assistance for study of regional population control or water resource allocation based on the assumption of coupling and coordination in physics. To combine these three models together, we use the output results of the CEMDWCC and the PSAIM as the input parameters for the CCM-HWR. On the one hand, the coupling degree of the DWCC and the PSA fluctuates little, and it is basically in a growing state during the 20-year study period. Moreover, the coupling relationship between the DWCC and the PSA remains relatively stable in these areas, and the coordination between them is more effective and orderly. The DWCC's coordination and coordination activities between the PSA and the DWCC can be quantitatively assessed using the above research findings, as can be seen from the above research findings.

Source link: https://doi.org/10.1007/s10668-022-02229-2


Assessing carrying capacity of regional water resources in karst areas, southwest China: a case study

With the growing shortage of water sources, the study of water resources carrying capacity has become a key and hot topic in the field of water resources science. The carrying capacity of the total amount of water resource is determined by two WRCC models to determine populations of population, agriculture, and economy that could be enhanced by local water sources, as well as local water resources. Wuhan compares Wuhan to Guiyang despite the fact that both cities have the same total amount of water resources, Wuhan's water resource consumption figures are almost four times higher than Guiyang. Engineer water shortage in karst areas is extremely widespread, and karst landforms have a major effect on the use of water sources in karst areas.

Source link: https://doi.org/10.1007/s10668-022-02597-9

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions