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Journal articles on the topic 'Dynamic Load Allowance'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Laman, J. A., J. S. Pechar, and T. E. Boothby. "Dynamic Load Allowance for Through-Truss Bridges." Journal of Bridge Engineering 4, no. 4 (1999): 231–41. http://dx.doi.org/10.1061/(asce)1084-0702(1999)4:4(231).

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2

Prachasaree, Woraphot, Attapon Sangkaew, Suchart Limkatanyu, and Hota V. S. GangaRao. "Parametric Study on Dynamic Response of Fiber Reinforced Polymer Composite Bridges." International Journal of Polymer Science 2015 (2015): 1–13. http://dx.doi.org/10.1155/2015/565301.

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Because of high strength and stiffness to low self-weight ratio and ease of field installation, fiber reinforced polymer (FRP) composite materials are gaining popularity as the materials of choice to replace deteriorated concrete bridge decks. FRP bridge deck systems with lower damping compared to conventional bridge decks can lead to higher amplitudes of vibration causing dynamically active bridge deck leading serviceability problems. The FRP bridge models with different bridge configurations and loading patterns were simulated using finite element method. The dynamic response results under v

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3

Gao, Qingfei, Biao Wu, Renzhi Wang, Jiaqiang Zhang, Binqiang Guo, and Jun Li. "Investigation of the Dynamic Performance of a Large-Span Suspension Bridge Influenced by Scouring Based on Vehicle-Bridge Coupled Vibration." Shock and Vibration 2020 (November 11, 2020): 1–12. http://dx.doi.org/10.1155/2020/6656247.

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To study the damage of bridge pile foundations caused by scouring, two damage mechanisms of scouring are proposed in this paper. Considering the vehicle-bridge coupled vibration in terms of two aspects of the scouring depth and erosion depth, the vertical and transversal dynamic characteristics and dynamic responses of the bridge are studied under different cases for the most sensitive vehicle speed. The dynamic characteristics include the 1st and 2nd vibration modes of the vertical and transversal directions of the bridge. The dynamic responses include the vertical and transversal dynamic loa

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4

Panesar, Daman K., and F. Michael Bartlett. "Load and resistance data for precast stringer highway bridges." Canadian Journal of Civil Engineering 33, no. 11 (2006): 1368–78. http://dx.doi.org/10.1139/l06-082.

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Statistical parameters for the load effects and resistances of precast "type G" stringer bridges erected in Alberta since the late 1950s are presented to assist practicing engineers assessing similar bridges using the mean load method. The load effect data include unit weight data for normal weight and two lightweight concretes; traffic volumes, gross vehicle weights, and single, tandem, and tridem axle weights observed on primary, secondary, and local roads; and dynamic load allowances for shear and bending moment on short span bridges. Extreme annual traffic loads are derived. The resistance

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5

Zhou, Yongjun, Zhongguo John Ma, Yu Zhao, Xiongwei Shi, and Shuanhai He. "Improved definition of dynamic load allowance factor for highway bridges." Structural Engineering and Mechanics 54, no. 3 (2015): 561–77. http://dx.doi.org/10.12989/sem.2015.54.3.561.

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6

Holden, Korin, Chris Pantelides, and Lawrence Reaveley. "Maximum Dynamic-Load Allowance of Bridge with GFRP-Reinforced Concrete Deck." Journal of Performance of Constructed Facilities 30, no. 3 (2016): 04015060. http://dx.doi.org/10.1061/(asce)cf.1943-5509.0000808.

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7

Wells, A., H. W. Shenton, K. N. Manahiloh, and G. Wenczel. "Dynamic Load Allowance Provisions for Box Culverts with Low Fill Depth." Transportation Infrastructure Geotechnology 5, no. 1 (2017): 42–58. http://dx.doi.org/10.1007/s40515-017-0046-6.

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8

Liu, Chenguang, Zonglin Wang, and Qingfei Gao. "Nonstructural Influence Factors of Dynamic Load Allowance for Concrete Beam Bridges." KSCE Journal of Civil Engineering 23, no. 5 (2019): 2293–302. http://dx.doi.org/10.1007/s12205-019-1428-9.

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9

Bigelow, Jake, Brent Phares, Terry Wipf, Mike Ritter, and Doug Wood. "Dynamic Field Performance of Glued Laminated Timber Bridges." Transportation Research Record: Journal of the Transportation Research Board 1928, no. 1 (2005): 154–64. http://dx.doi.org/10.1177/0361198105192800117.

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To use and develop timber structures in transportation better, the U.S. government implemented several national programs starting in the early 1990s to address the needs of the timber industry. One need was to investigate the dynamic field performance of timber bridges in relation to vehicular loading. The AASHTO load and resistance factor design specifications recommend a dynamic load allowance of 0.165 for timber bridges. To investigate this codified value, research was needed to determine the dynamic characteristics of timber bridges and to study their dynamic performance. To obtain dynamic

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10

ZHANG, JING, and WEI-XIN REN. "A DYNAMIC STIFFNESS METHOD FOR DETERMINING NATURAL FREQUENCIES OF BEAMS WITH ALLOWANCE FOR DEAD LOAD." International Journal of Structural Stability and Dynamics 09, no. 04 (2009): 777–90. http://dx.doi.org/10.1142/s0219455409003284.

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The initial stresses due to dead loads have an influence on the natural frequencies of bridges. In this paper, a dynamic stiffness-based method is proposed for determining the natural frequencies of uniform elastic beams with allowance for the dead load effect. Firstly, the governing differential equation including the effect of dead loads is derived. Next, the analytical dynamic stiffness matrix is obtained by applying the displacements and forces boundary conditions at the ends of the beam. In order to solve analytically the governing differential equation, the modified dynamic stiffness mat

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11

Savard, Marc, Marc-André Careau, and Alain Drouin. "Experimental study on the dynamic effects caused by vehicular traffic on a ferry boarding ramp." Canadian Journal of Civil Engineering 29, no. 1 (2002): 27–36. http://dx.doi.org/10.1139/l01-069.

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This article presents some of the results obtained during a load test conducted on a ferry boarding ramp operated by the Société des traversiers du Québec. The measurements highlight the sensitivity of these structures to the dynamic effects caused by two heavy vehicles. Since the dynamic behaviour of highway bridges is affected by parameters different from those that affect ferry boarding ramps, the article presents a reflection on the dynamic load allowance suitable for the evaluation or design of this latter type of structure.Key words: boarding ramp, bridge, dynamic amplification factor, d

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12

Deng, Lu, C. S. Cai, and Michele Barbato. "Reliability-Based Dynamic Load Allowance for Capacity Rating of Prestressed Concrete Girder Bridges." Journal of Bridge Engineering 16, no. 6 (2011): 872–80. http://dx.doi.org/10.1061/(asce)be.1943-5592.0000178.

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13

Cai, Chun Sheng, Wei Zhang, Lu Deng, and Miao Xia. "Performance Evaluation of Existing Bridges under Vehicle Dynamic Effects." Advanced Materials Research 639-640 (January 2013): 42–53. http://dx.doi.org/10.4028/www.scientific.net/amr.639-640.42.

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This paper summarizes the recent work by the first author’s research group related to the performance evaluation of existing bridges under vehicle dynamic effects. Based on the data from short-term monitoring of existing bridges, a framework to estimate the extreme structure responses from the live load in a mean recurrence interval is developed in the first part. The Gumbel distribution of the extreme values was derived from an extreme value theory and Monte Carlo Simulation. In the second part, a framework of fatigue damage and reliability assessment for existing bridges is presented to incl

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14

Panesar, Daman K., and F. Michael Bartlett. "Assessment of precast stringer highway bridges using mean load method." Canadian Journal of Civil Engineering 33, no. 11 (2006): 1359–67. http://dx.doi.org/10.1139/l06-081.

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The mean load method of the Canadian Highway Bridge Design Code is used to evaluate the shear and bending moment reliability of existing precast "type G" stringer bridges in Alberta that date from the late 1950s. The overall stringer population is categorized into distinct subpopulations using bridge-specific factors, including the degree of deterioration and approach span condition, which are readily identified during a brief field visit or from inspection reports. Critical sections to be investigated for reliability resisting shear forces or bending moments are determined. The reliability in

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15

Gao, Qingfei, Kemeng Cui, Jun Li, Binqiang Guo, and Yang Liu. "Optimal layout of sensors in large-span cable-stayed bridges subjected to moving vehicular loads." International Journal of Distributed Sensor Networks 16, no. 1 (2020): 155014771989937. http://dx.doi.org/10.1177/1550147719899376.

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To obtain the health status of long-span cable-stayed bridges, multiple sensors are applied to the health monitoring system for data collection. The optimal layout of sensors that aims to obtain as much structural information as possible with fewer sensors is important to ensure the effectiveness of the health monitoring system. Sensors are usually placed in typical locations where the structural response is obvious, and most studies utilize static response for the determination of sensor location. In fact, bridges primarily suffer the dynamic load, of which the response has a significant impa

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16

Montenegro, P. A., J. M. Castro, R. Calçada, J. M. Soares, H. Coelho, and P. Pacheco. "Probabilistic numerical evaluation of dynamic load allowance factors in steel modular bridges using a vehicle-bridge interaction model." Engineering Structures 226 (January 2021): 111316. http://dx.doi.org/10.1016/j.engstruct.2020.111316.

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17

Gao, Qingfei, Qilu Ma, Kemeng Cui, Jun Li, and Chuang Xu. "Numerical Investigation of the Characteristics of the Dynamic Load Allowance in a Concrete-Filled Steel Tube Arch Bridge Subjected to Moving Vehicles." Shock and Vibration 2020 (September 17, 2020): 1–15. http://dx.doi.org/10.1155/2020/8819137.

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Dynamic load allowance (DLA) is a key factor for evaluating the structural condition of bridges; however, insufficient research has been performed regarding the characteristics of DLA in concrete-filled steel tube (CFST) arch bridges. To address this issue, based on an actual CFST arch bridge, the DLA characteristics of bridges are investigated numerically in this study. First, aiming at different structural components, such as the arch rib, main girder, and suspenders, the DLA values obtained at various locations of different structural components are compared in detail, and then the changing

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18

Shehata, Emile, and Aftab Mufti. "Development of a glass-fiber-reinforced-polymer bridge deck system." Canadian Journal of Civil Engineering 34, no. 3 (2007): 453–62. http://dx.doi.org/10.1139/l06-129.

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Development of an efficient and durable bridge deck system is a priority for most highway departments worldwide. This paper summarizes the results of an experimental program designed to study the behaviour of innovative glass-fiber-reinforced-polymer (GFRP) bridge deck modules and their transverse connection. The deck consisted of a number of triangular filament-wound tubes bonded with epoxy resin. Pultruded GFRP laminates were adhered to the top and bottom of the tubes to create one modular unit. The experimental program described in this paper discusses the evolution of the last two generati

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19

MOHAMMED, Omar, Arturo GONZÁLEZ, and Daniel CANTERO. "DYNAMIC IMPACT OF HEAVY LONG VEHICLES WITH EQUALLY SPACED AXLES ON SHORT-SPAN HIGHWAY BRIDGES." Baltic Journal of Road and Bridge Engineering 13, no. 1 (2018): 1–13. http://dx.doi.org/10.3846/bjrbe.2018.382.

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Extremely large trucks with a weight exceeding the standard require a permit before they are allowed to cross the bridges of a specific route. For the purpose of safety, an escort is often employed to maintain a distance between vehicles and to ensure that the bridge load remain below the allowed maximum. Given that the speed of these large vehicles is quite slow and that the amplitude of vibrations normally declines when the vehicle mass is large, a minor dynamic amplification of the bridge response is expected. However, some of these large trucks have a unique feature characterized by “multi

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20

Fleming, P. R., E. Faragher, and C. D. F. Rogers. "Laboratory and Field Testing of Large-Diameter Plastic Pipe." Transportation Research Record: Journal of the Transportation Research Board 1594, no. 1 (1997): 208–16. http://dx.doi.org/10.3141/1594-24.

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Flexible plastic pipe is increasingly being used in the United Kingdom for drainage and ducting (conduit) purposes. This increase in use is leading to the introduction of larger-diameter pipes. The U.K. Department of Transport (DoT) uses a recently developed, theoretical method to specify installation conditions in place of traditional techniques (e.g., Spangler’s Iowa method). The DoT design method is outlined. The extensive program of laboratory and field testing carried out at Lough-borough University to determine the performance of plastic pipes under a range of loading conditions that may

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21

Windyandari, Aulia. "METODOLOGI PENGEMBANGAN MODEL SIMULASI UNTUK EVALUASI KESELAMATAN PENUMPANG FREEFALL LIFEBOAT." Gema Teknologi 16, no. 2 (2012): 75. http://dx.doi.org/10.14710/gt.v16i2.1628.

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Aulia Windyandari, in paper simulation model of development method for passenger savety evaluation of freefaal lifeboat explain that since the launching procedure of Freefall Lifeboat (FFL) may have an impact with the water surface, the occupant injury is possible be occured in the evacuation process of the offshore structures. The FFL shock acceleration has been conducted by the impact force when the lifeboat entry the water surface. If the shock acceleration over the human conciousness allowance, the serious injury will be happened during the FFL launching.According to the conditions, the IM

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22

Nikitina, I., and A. Polyakov. "SPECIFIC FEATURES OF THERMAL PROCESSES IN DOUBLE-SIDED FACE GRINDING MACHINES." Bulletin of Belgorod State Technological University named after. V. G. Shukhov 6, no. 1 (2021): 82–94. http://dx.doi.org/10.34031/2071-7318-2021-6-1-82-94.

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The paper presents an analysis of thermal processes in the bearing system of a double-sided face grinding machine. Experimental data on temperatures and displacements obtained when the machine is idling and when imitating the grinding process with the help of electric heaters of various powers are used for analysis. The performed studies have shown that thermal deformations of double-sided face grinding machines with an arc trajectory of workpiece feed occur in a wide range in magnitude and direction. It can violate the main requirement for the precise operation of the machine - the symmetry o

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23

Afonin, S. M. "Structural Schemes and Structural-Parametric Models of Electroelastic Actuators for Nanomechatronics Systems." Mekhatronika, Avtomatizatsiya, Upravlenie 20, no. 4 (2019): 219–29. http://dx.doi.org/10.17587/mau.20.219-229.

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The parametric structural schemes, structural-the parametric models and the transfer functions of the electroelastic actuators for the nanomechatronics systems are obtained. The transfer functions of the piezoactuator are determined under the generalized piezoelectric effect. The changes in the elastic compliance and the stiffness of the piezoactuator are found, taking into account the type of control. The decision wave equation and the structural-parametric models of the electroelastic actuators are obtained. Effects of the geometric and physical parameters of the electroelastic actuators and

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24

Belostotsky, Alexander M., Pavel A. Akimov, Dmitry S. Dmitriev, Andrey S. Pavlov, Yulia N. Dyadchenko, and Alexander I. Nagibovich. "Numerical analysis of mechanical safety parameters of Congress Hall building in Chelyabinsk." Structural Mechanics of Engineering Constructions and Buildings 15, no. 4 (2019): 251–60. http://dx.doi.org/10.22363/1815-5235-2019-15-4-251-260.

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Aims of research. The article is devoted to actual problems of computational analysis of stress-strain state, strength and stability of load-bearing structures with allowance for the main and special combinations of loads and impacts, comparison of the results of alternative structural analysis of unique cultural and business complex “Congress Hall” in Chelyabinsk. The natural conditions of the area of location of this object and main load-bearing structures of the object are described. Besides, characteristic and design loads, their combinations, formulation of objectives of computational res

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25

Zhang, Xian Min, Li Li Sun, Chun Fei Hu, and Zhi Chao Sun. "Research on Dynamic Load Coefficient Based on the Airfield Pavement Roughness." Applied Mechanics and Materials 97-98 (September 2011): 386–90. http://dx.doi.org/10.4028/www.scientific.net/amm.97-98.386.

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It applies flight dynamics and vibration principle to create vibration model of aircraft landing gear considering aircraft tire damping, and get the equation of analytical solution based on the impact on airfield pavement roughness. It studies the relationship between dynamic load coefficient and time and speed and roughness. For a special aircraft, it gives the allowable level for pavement roughness based on the influence of pavement and passengers comfort.

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26

Heidary, H. R. "Maximum Allowable Dynamic Load of Mobile Manipulators with Stability Consideration." Journal of Theoretical and Applied Mechanics 45, no. 3 (2015): 3–22. http://dx.doi.org/10.1515/jtam-2015-0014.

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Abstract High payload to mass ratio is one of the advantages of mobile robot manipulators. In this paper, a general formula for finding the maximum allowable dynamic load (MADL) of wheeled mobile robot is presented. Mobile manipulators operating in field environments will be required to manipulate large loads, and to perform such tasks on uneven terrain, which may cause the system to reach dangerous tip-over instability. Therefore, the method is expanded for finding the MADL of mobile manipulators with stability consideration. Moment-Height Stability (MHS) criterion is used as an index for the

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27

Gao, Qingfei, Zonglin Wang, Chan Ghee Koh, and Chuang Chen. "Dynamic Load Allowances Corresponding to Different Responses in Various Sections of Highway Bridges to Moving Vehicular Loads." Advances in Structural Engineering 18, no. 10 (2015): 1685–701. http://dx.doi.org/10.1260/1369-4332.18.10.1685.

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28

Yao, Y. L., M. H. Korayem, and A. Basu. "Maximum allowable load of flexible manipulators for given dynamic trajectory." Robotics and Computer-Integrated Manufacturing 10, no. 4 (1993): 301–9. http://dx.doi.org/10.1016/0736-5845(93)90043-j.

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29

XIA, CHAOYI, HE XIA, NAN ZHANG, and WEIWEI GUO. "EFFECT OF TRUCK COLLISION ON DYNAMIC RESPONSE OF TRAIN–BRIDGE SYSTEMS AND RUNNING SAFETY OF HIGH-SPEED TRAINS." International Journal of Structural Stability and Dynamics 13, no. 03 (2013): 1250064. http://dx.doi.org/10.1142/s0219455412500642.

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A dynamic analysis model is established for a coupled high-speed train and bridge system subjected to collision loads. A 5 × 32 m continuous high-speed railway bridge with PC box girders is considered in the illustrative case study. Entire histories of a CRH2 high-speed EMU train running on the bridge are simulated when the truck collision load acts on the bridge pier, from which the dynamic responses such as displacements and accelerations of the bridge, and the running safety indices such as derailment factors, offload factors and lateral wheel/rail forces of the train are computed. For the

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30

Yang, Wei, Miao Ju Chen, Ying Liu, and Feng Yao Jin. "A System Dynamics Model for Water Quality Management - Waste Load Allocation." Advanced Materials Research 291-294 (July 2011): 1781–85. http://dx.doi.org/10.4028/www.scientific.net/amr.291-294.1781.

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A simulation-based system dynamics (SD) model was developed for allocating the waste load and supporting river quality management. Panjin section of Liaohe River in China was used as a study case to demonstrate the feasibility of the proposed methodology. The national surface-water environment function zoning of Liaoning Province was presented as a constraint in order to calculate the maximum allowable waste quantity for COD, which is expressed as interval format of both upper bound and lower bound. Then allocate the waste load to each point source responses within these quantities. The study

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31

Korayem, M. H., A. Heidari, and A. Nikoobin. "Maximum allowable dynamic load of flexible mobile manipulators using finite element approach." International Journal of Advanced Manufacturing Technology 36, no. 5-6 (2007): 606–17. http://dx.doi.org/10.1007/s00170-006-0863-1.

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32

Korayem, M. H., A. Heidari, and A. Nikoobin. "Maximum allowable dynamic load of flexible mobile manipulators using finite element approach." International Journal of Advanced Manufacturing Technology 36, no. 9-10 (2007): 1010–21. http://dx.doi.org/10.1007/s00170-006-0893-8.

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33

Korayem, M. H., A. Heidari, and A. Nikoobin. "Maximum allowable dynamic load of flexible mobile manipulators using finite element approach." International Journal of Advanced Manufacturing Technology 45, no. 11-12 (2009): 1232. http://dx.doi.org/10.1007/s00170-009-2069-9.

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34

Hussein H. Karim, Zeena W. Samueel, and Mohammed A. Hussein. "A Comparison Study on the Effect of Various Layered Sandy Soil Deposited on Final Settlement under Dynamic Loading." Engineering and Technology Journal 38, no. 4A (2020): 594–604. http://dx.doi.org/10.30684/etj.v38i4a.1569.

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The foundation is expansion in base of column, wall or other structure in order to transmit the loads from the structure to under footing with a suitable pressure with soil property. There are two conditions to design foundation: 1. The stress is applied by footing on soil is not exceeded allowable bearing capacity ( ). 2. The foundation settlement and differential settlement are due to applied loads are not exceeding the allowable settlement that based on the type and size of structure, the nature of soil. Rigid square machine footing with dimension 200*200 mm with two types of relative densi

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35

korayem, M. H., and A. Basu. "Formulation and numerical solution of elastic robot dynamic motion with maximum load carrying capacities." Robotica 12, no. 3 (1994): 253–61. http://dx.doi.org/10.1017/s0263574700017227.

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SUMMARYThis paper presents a new formulation as well as numerical solution for the problem of finding a point-to-point trajectory with maximum load carrying capacities for flexible manipulators. For rigid manipulators, the major limiting factor in determining the maximum allowable load (mass and mass moment of inertia) is the joint actuator capacity, while the flexibility exhibited by light weight robots or by robots operating at a higher speed dictates the need for an additional constraint to be imposed for situations where precision tracking is required, that is, the allowable deformation at

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36

Novytskyi, Oleksii, Ihor Taran, and Zhemazhan Zhanbirov. "Increasing mine train mass by means of improved efficiency of service braking." E3S Web of Conferences 123 (2019): 01034. http://dx.doi.org/10.1051/e3sconf/201912301034.

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Methods to increase mine train mass allowable for braking have been studied. Possibility to use rail magnetic brakes to improve efficiency of dynamic braking has been analyzed. Mathematical model of the train braking involving a magnetic rail device to increase locomotive axial load has been proposed. Results of the braking calculations with the use of the modeling results have made it possible to conclude on the fact that a magnetic rail device used to increase locomotive axial load allows improving considerably braking characteristics of a locomotive and increasing mine train mass allowable

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37

Remennikov, A. M., M. H. Murray, and S. Kaewunruen. "Reliability-based conversion of a structural design code for railway prestressed concrete sleepers." Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit 226, no. 2 (2011): 155–73. http://dx.doi.org/10.1177/0954409711418754.

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Ballasted railway track is very suitable for heavy-rail networks because of its many superior advantages in design, construction, short- and long-term maintenance, sustainability, and life cycle cost. An important part of the railway track system, which distributes the wheel load to the formation, is the railway sleeper. Improved knowledge has raised concerns about design techniques for prestressed concrete (PC) sleepers. Most current design codes for these rely on allowable stresses and material strength reductions. However, premature cracking of PC sleepers has been found in railway tracks.

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38

Roy Chowdhury, Amar Nath, Chien Ming Wang, and Soo Jin Adrian Koh. "Continuum Shell Model for Buckling of Single-Walled Carbon Nanotubes with Different Chiral Angles." International Journal of Structural Stability and Dynamics 14, no. 04 (2014): 1450006. http://dx.doi.org/10.1142/s0219455414500060.

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In this paper, an equivalent thick cylindrical shell model is proposed for the buckling analysis of short single-walled carbon nanotubes (SWCNTs) with allowance for different chiral angles. Extensive, molecular dynamics (MD) simulations are first performed using the adaptive intermolecular reactive bond order potential to determine the critical buckling loads/strains. The MD simulations buckling results are then used as reference solutions to calibrate the properties of the thick cylindrical shell model. Central to this development is the establishment of an empirical expression for the Young'

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39

Kamarudin, Adan, and Erizal. "Analisis Kekuatan Struktur Bangunan Dermaga Kayu di Babo Teluk Bintuni, Papua Barat." Jurnal Teknik Sipil dan Lingkungan 6, no. 2 (2021): 81–96. http://dx.doi.org/10.29244/jsil.6.2.81-96.

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Analysis of structural strength to the conditions of the jetty Port Babo of Teluk Bintuni, West Papua is important to ensure the stability of the against external loads and forces. The purpose of this research is to analyse and evaluate the strength of structures, as well as assess the durability of jetty structures. Modeling using the SAP2000 program corresponds to as built drawing. The results of the calculation of the working load include dead loads, live loads, ship berth, ship mooring force, current force, wave force, and earthquake force. Energy due to ship collision loads and vessel ber

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40

Feng, Zeng Ming, Jun Long Li, and Guang Wu Liu. "Dynamic Analysis of Silent Chain Drive System for Hybrid Car." Advanced Materials Research 694-697 (May 2013): 84–89. http://dx.doi.org/10.4028/www.scientific.net/amr.694-697.84.

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Based on study of the power transmission system theory for hybrid car, a silent chain drive system which is used to transmit power between motor and gear box was designed. Using multi-body dynamic software RecurDyn, the dynamic behavior of the silent chain system was simulated, the chain tension, meshing impact load and instantaneous transmission ratio of the drive system under different velocity was analyzed. The results show that, at the whole speed range, the chain tension is always less than the chain rotation fatigue strength (including a safety factor of 1.3 times), its able to meet the

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41

Mancuso, Anthony, Francisca Belart, and Ben Leshchinsky. "Operative loading in cable yarding systems: field observations of static and dynamic tensions in mobile anchor systems." Canadian Journal of Forest Research 48, no. 11 (2018): 1406–10. http://dx.doi.org/10.1139/cjfr-2018-0219.

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Cable yarding systems are an effective means of facilitating harvesting operations in steep terrain, but require sufficient anchoring for safe performance. Design and safe operation often dictates that cable loading remain at a safe level, yet the actual loads incurred for anchoring systems, particularly for “mobile” or “equipment” anchors, are ill-quantified. Furthermore, these anchors are subject to loading that is rather dynamic in nature, realizing impulse loads from various operation occurrences, particularly breakout. This study describes the measured static and dynamic cable loads durin

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42

Jasim AL Akawai, Hussain, Khalid Mershid Aweed, and Shawthab Ali Jaber. "Finite Element Method Analysis of Normal and Corrosion Buckling with ANSYS17 Program for Stainless Steel 304 Alloy." International Journal of Engineering & Technology 7, no. 4.7 (2018): 245. http://dx.doi.org/10.14419/ijet.v7i4.7.20557.

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In the present research the effect of corrosion on buckling behavior of 304 stainless steel with increasing of compressive dynamic loads was studied. There are two types of the columns, long columns and intermediate columns were used. For compression test, there are 24 columns specimens were used in the dynamic axis, 12 columns tests were carried out with increasing in the dynamic axis of compressive load, while for the corrosion test was performed by using 12 specimens were buried for two months under the ground before tested them. The allowable deflection in lateral axis is 1% in the length

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Taghizadeh, Mohammad Hossein, and Alaeddin Behravesh. "Application of Spatial Structures in Bridges Deck." Civil Engineering Journal 1, no. 1 (2015): 1–8. http://dx.doi.org/10.28991/cej-2015-00000001.

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Spatial structure is a truss-like, lightweight and rigid structure with a regular geometric form. Usually from these structures is used in covering of long-span roofs. But these structures due to the lightness, ease and expedite of implementation are a suitable replacement for bridge deck. However steel and concrete is commonly used to build bridge deck, but heavy weight of steel and concrete decks and impossibility of making them as long-span bridge deck is caused engineers to thinks about new material that besides lightness and ease of implementation, provide an acceptable resistance against

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Chen, Wei, Xianrong Qin, Zhigang Yang, and Pengming Zhan. "Wind-induced tower crane vibration and safety evaluation." Journal of Low Frequency Noise, Vibration and Active Control 39, no. 2 (2019): 297–312. http://dx.doi.org/10.1177/1461348419847306.

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The maximum wind load direction of tower crane is considered to be perpendicular to its jib. The interference effects of its different segments and across-wind loads are ignored in traditional crane safety evaluation. This study proposes a general scheme for the safety evaluation of tower cranes under fluctuating wind loads. The wind coefficients of a full-scale model of a tower crane were calculated by computational fluid dynamics, and then the time history of wind loads, simulated through the autoregressive method, were applied to the finite element model of a tower crane. The results reveal

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Ko, Kil-Wan, Heon-Joon Park, Jeong-Gon Ha, et al. "Evaluation of dynamic bending moment of disconnected piled raft via centrifuge tests." Canadian Geotechnical Journal 56, no. 12 (2019): 1917–28. http://dx.doi.org/10.1139/cgj-2018-0248.

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When connected piles are used as settlement reducers, the proportion of vertical load carried by the pile may come close to the allowable load of the pile. To reduce not only the vertical load, but also the lateral load and bending moment to which the pile is subjected, the disconnected piled raft (DPR) has been introduced as an effective design for the role of the settlement reducers. Although several DPRs have been constructed, most of the research efforts on DPRs are limited to the structural behavior such as the evaluation of the seismic acceleration of the structure on the DPR; thus, ther

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Woo, Gyu-Seong, Jong-Bae Park, Mi-Jeong Seo, and Jong-Sub Lee. "Evaluation of Allowable Bearing Capacity of 600 mm Diameter Preboring PHC Piles Using Dynamic Load Test." Journal of the Korean Geotechnical Society 32, no. 11 (2016): 61–72. http://dx.doi.org/10.7843/kgs.2016.32.11.61.

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Spruogis, Bronislovas, Arūnas Jakštas, Vytautas Turla, Igor Iljin, and Nikolaj Šešok. "DYNAMIC REACTION FORCES OF AN OVERHEAD CRANE ON LIFTING." TRANSPORT 26, no. 3 (2011): 279–83. http://dx.doi.org/10.3846/16484142.2011.622144.

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In the recent period, girder bridge cranes are replaced with double-beam overhead cranes with a rectangular cross-section of the beams. In addition, new materials are used for producing them thus applying other values of allowable loads and deformations. The paper focuses on two overhead cranes working for JSC Vilniaus kranai (Vilnius Cranes). The presented mathematical model provides an opportunity to assess the structural peculiarities of the above introduced cranes. The calculated results of dynamic loads appearing in the beginning and the end of the lifting process and having an impact on

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Aziz, Hussein Yousif, and Jian Lin Ma. "Study the Design and Analysis of Al-Shuhadah Bridge and Analysis by Using Plaxis Program of Finite Elements." Advanced Materials Research 243-249 (May 2011): 3676–84. http://dx.doi.org/10.4028/www.scientific.net/amr.243-249.3676.

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This paper is a studying on the Al-Shuhadah Bridge lies in the Muthanna province south of Iraq, including the soil investigation taken from the project and analysis for the designed bridge firstly manually by using equations 1 and 2 according to the data provided, secondly by using three dimensional Plaxis program of finite elements. The settlement calculated by the above two ways is nearly similar and considered reasonable values compared with the allowable settlement according to Skempton and McDonald (1956) limitations for maximum settlement and maximum angular distortion. The bearing capac

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Wang, Junguo, Minqiang Ren, Rui Sun, Yang Yang, and Yongxiang Zhao. "Structural Simulation and Strength Analysis for Trailer Bogie Frame of High-Speed Train Based on CATIA and ANSYS Workbench." Recent Patents on Mechanical Engineering 13, no. 3 (2020): 266–79. http://dx.doi.org/10.2174/2212797613666200319150947.

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Background: As a key component of the rail transit vehicle, the railway bogie greatly affects the dynamic performance, reliability, and safety of the high-speed rail vehicle. In this paper, the structural strength of a typical trailer bogie frame is evaluated and its strength and dynamic requirements are verified. In addition, various patents on bogie structural strength have also been discussed in this paper. Objective: The study aimed to evaluate and verify the rationality of the bogie frame structure design with static strength and dynamic characteristics. Methods: A three-dimensional model

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Roikhan, Roikhan. "EFISIENSI PEGADAIAN SYARIAH DAN PROSPEK PERTUMBUHAN ASET DI INDONESIA." al-Uqud : Journal of Islamic Economics 1, no. 1 (2017): 59. http://dx.doi.org/10.26740/jie.v1n1.p59-82.

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The purpose of this study is to analyze the efficiency of Islamic Pawnshop together with four competitors and analyze the prospects for assets growth of the Islamic pawnshop in Indonesia. This study is quantitative analyze research with secondary data of annual financial statements from the Islamic Pawnshop and four competitors during 2008-2014. The sampling technique is the purposive sampling with sample of the Islamic Pawnshop and four competitors in Indonesia. This study uses analysis efficiency of the Data Envelopment Analysis method. Input variables are: the load bonus, deposit wadiah, ge

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