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Relevant bibliographies by topics / Severe loading condition

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Academic literature on the topic 'Severe loading condition'

Author: Grafiati

Published: 3 June 2025

Last updated: 20 July 2025

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Journal articles on the topic "Severe loading condition"

1

Kanhaiya, Krishnakant, and Dr Ajay Kumar Jain. "“A Comparative Study of Circular Water Tank in Two Different Loading Conditions (Seismic and Wind Load Condition) using Staad-Pro”." International Journal of Innovative Technology and Exploring Engineering 11, no. 3 (2022): 75–79. http://dx.doi.org/10.35940/ijitee.l9562.0111322.

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In this paper a comparison of the two loading combinations of a circular water tank i.e. seismic and wind load conditions have been made. The STAADPro software has been used to analyze the circular water tank structure and to compare both the loading combinations. Two similar models of a circular water tank were created, provided with the required attributes (i.e. loading conditions, zones etc.) and were analyzed in both, seismic load condition and wind load condition. The comparison of results from both the analyses revealed that, due to lower seismic zones, the effect of earthquake is slight

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Krishnakant, Kanhaiya, and Ajay Kumar Jain Dr. "A Comparative Study of Circular Water Tank in Two Different Loading Conditions (Seismic and Wind Load Condition) using Staad-Pro." International Journal of Innovative Technology and Exploring Engineering (IJITEE) 11, no. 3 (2022): 75–79. https://doi.org/10.35940/ijitee.L9562.0111322.

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<strong>Abstract:</strong> In this paper a comparison of the two loading combinations of a circular water tank i.e. seismic and wind load conditions have been made. The STAADPro software has been used to analyze the circular water tank structure and to compare both the loading combinations. Two similar models of a circular water tank were created, provided with the required attributes (i.e. loading conditions, zones etc.) and were analyzed in both, seismic load condition and wind load condition. The comparison of results from both the analyses revealed that, due to lower seismic zones, the eff

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Arabshahi, Zohreh, Jamal Kashani, S. S. R. Koloor, Mohammed Rafiq Abdul Kadir, and Abbas Azari. "Design Analysis of TMJ Implant under Physiological Loading Condition." Advanced Materials Research 488-489 (March 2012): 996–1000. http://dx.doi.org/10.4028/www.scientific.net/amr.488-489.996.

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Equal channel angular extrusion (ECAE) is a severe plastic deformation (SPD) method for obtaining bulk nanostructured materials. The ECAE die consists of two equal channels that intersect at an angle, usually between 90。and 135。. In the present study, the plastic deformation behavior of copper during the ECAE process with 120o die was investigated. To analyze the deformation behavior and the related strain distributions in the specimen, the commercial FE code ABAQUS has been used. The properties of the materials are strongly dependent on the shear plastic deformation behavior during equal chan

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Zhang, Fu Xiang, Bing Yin Ji, Xiang Tong Yang, Yong Han, and Ze Liang Chang. "Finite Element Numerical Simulation of Tubing Premium Connection." Applied Mechanics and Materials 217-219 (November 2012): 1622–27. http://dx.doi.org/10.4028/www.scientific.net/amm.217-219.1622.

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The environment and load condition of tubing is severe in high pressure wells. The sealability and joint strength of tubing string plays an important role in production operation. In this study, the makeup, sealability and joint strength was analyzed from conditions of make-up loading, tension loading, compression loading and internal pressure loading by finite element method. The makeup torque, the contact pressure distributions of metal seal along the axis and the stress distributions of threaded connection are given. The results show that under tension loading, compression loading and inter

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Salim, Nur Ashida, Muhammad Murtadha Othman, Ismail Musirin, Mohd Salleh Serwan, and Stendley Busan. "Severe Total Loading Condition Attributed by a Significant Impact of Dynamic Power System Cascading Collapse." Applied Mechanics and Materials 785 (August 2015): 445–49. http://dx.doi.org/10.4028/www.scientific.net/amm.785.445.

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Cascading outage is a sequence of multiple dependent component outages that gradually happened in a power system. One of the main reasons is due to the hidden failure in a protection system that may cause to a power system instability leading to a system cascading collapse. This paper presents a computationally realistic technique used to determine the estimated average probability of a dynamic system cascading collapse in conjunction with the effect of hidden failure on a protection system. This includes a realistic calculation of the probability of hidden failure as it will provide significa

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Yang, Yong Biao, Zhi Min Zhang, and Fu Chi Wang. "Fracture Mechanisms Anisotropy of AZ31 Magnesium Plate under Impact Loading Condition." Advanced Materials Research 266 (June 2011): 233–36. http://dx.doi.org/10.4028/www.scientific.net/amr.266.233.

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Dynamic mechanical properties of AZ31 magnesium alloy plate were carried out using split Hopkinson pressure bar (SHPB) with compression direction 0° and 90° from normal direction respectively. Optical microscopy (OM) and scanning electronic microscopy (SEM) were used for the observation of microstructure and fractograph. OM observations showed that cracks initiated and propagated along localized deformed bands consisted of twin intersection for 0° specimen, and that cracks initiated and propagated along localized transformed bands consisted of fine equiaxed dynamic recrystallized grains for 90

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Kim, Jung Seok, and Nam Po Kim. "Structural Assessment for Bogie Frame of 180km/h Korean Tilting Train." Key Engineering Materials 297-300 (November 2005): 345–50. http://dx.doi.org/10.4028/www.scientific.net/kem.297-300.345.

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This paper has performed the fatigue strength evaluation for the bogie frame of Korean tilting train. In order to verify the structural safety of the bogie frame, we firstly investigated the loading condition imposed on the bogie frame. The bogie frame of the tilting train is exposed to the more severe loadings compared with the conventional one because of the tilting of the carbody and the high-speed curve negotiation. We have conducted some multi-body dynamic analyses to extract the load condition by tilting on curve. The finite element analysis is used to obtain the stress distribution. Thr

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Bataev, Ivan A., Igor A. Balagansky, Anatoly Bataev, and Kazuyuki Hokamoto. "Transformation of Structure in Carbon Steel Specimen under Loading by Mach Stem, Formed in Preliminary Compressed High Explosive Charge TG-40." Materials Science Forum 673 (January 2011): 89–94. http://dx.doi.org/10.4028/www.scientific.net/msf.673.89.

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A structure of a carbon steel specimen after explosive loading is investigated. The loading was executed by Mach stem, formed in high explosive charge that was preliminary compressed by advanced wave in ceramic bar. In the original condition the specimen had a typical for low carbon steel ferrite-pearlite structure. Metallographic analysis has shown that during the process of the explosive loading the following structural changes took place: formation of numerous deformation twins in both ferrite grains and pearlite colonies (i.e. in two-phase structure); formation of extended bands of localiz

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Situ, M., and J. A. Schetz. "Numerical Calculations of the Breakup of Highly Loaded Slurry Jets." Journal of Fluids Engineering 109, no. 3 (1987): 332–36. http://dx.doi.org/10.1115/1.3242669.

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A complete numerical calculation procedure for predicting the effects of mass loading and particle diameter on laminar slurry jet breakup in a low velocity, coaxial gas stream has been developed. The method is based on the Volume of Fluid technique for the Navier-Stokes equations. The severe restrictions involved in earlier treatments have been relaxed. The influence of particle loading on liquid phase density and the influence of particle spacing on drag are included. The particular case considered is a slurry with a methanol liquid phase with aluminum oxide beads in order to compare with som

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Liao, Yiping, Xiaoshan Liu, Guoqiu He, et al. "Path-dependent multiaxial fatigue behavior of A319 aluminum alloy under non-proportional loading conditions." Materials Testing 65, no. 5 (2023): 684–98. http://dx.doi.org/10.1515/mt-2022-0287.

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Abstract In the multiaxial low fatigue test study, four multiaxial non-proportional fatigue loading paths were used including rectangular, square, rhombic and circular. The effect of loading condition changes on the fatigue behavior and cyclic damage characteristics of A319 aluminum alloy was investigated by means of stress response curves, stress–strain hysteresis lines, fatigue fracture morphology, and dislocation substructure morphology in combination with material microstructure. The non-proportional hardening behavior exhibits strong loading path dependence, and the fatigue plastic deform

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Books on the topic "Severe loading condition"

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International, Conference on Concrete under Severe Conditions (2nd 1998 Tromsø Norway). Concrete under severe conditions 2: Environment and loading : proceedings of the Second International Conference on Concrete Under Severe Conditions, CONSEC '98, Tromsø, Norway, June 21-24, 1998. E & FN Spon, 1998.

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International, Conference on Concrete under Severe Conditions (2nd 1998 Tromsø Norway). Concrete under severe conditions 2: Environment and loading : proceedings of the Second International Conference on Concrete Under Severe Conditions, CONSEC '98, Tromsø, Norway, June 21-24, 1998. E & FN Spon, 1998.

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Concrete under severe conditions: Environment and loading. Spon, 1995.

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Colombo, Matteo. Concrete under Severe Conditions - Environment and Loading. Trans Tech Publications, Limited, 2016.

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Gjørv, Odd E., K. Sakai, and Nemkumar Banthia. Concrete under Severe Conditions: Environment and Loading. Taylor & Francis Group, 2004.

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Prisco, Marco di, and Matteo Colombo. Concrete under Severe Conditions - Environment and Loading. Trans Tech Publications, Limited, 2016.

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Colombo, Matteo, and Marco di Prisco. Concrete under Severe Conditions - Environment and Loading. Trans Tech Publications Ltd, 2016. http://dx.doi.org/10.4028/b-dmwk9d.

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Concrete under Severe Conditions: Environment and Loading. CRC Press LLC, 1995.

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Sakai, Koji. Concrete Under Severe Conditions 1: Environment and Loading. Taylor & Francis, 1995.

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Sakai, K., N. Banthia, and O. Gjorv. Concrete under Severe Conditions 2: Environment and Loading. Taylor & Francis Group, 1998.

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Book chapters on the topic "Severe loading condition"

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Ghilardi, C., A. Girola, S. Gazzola, M. Culotta, and L. Zilli. "Tunnel renewal in severe seismic loading conditions: The case of Mena twin tunnel." In Tunnelling into a Sustainable Future – Methods and Technologies. CRC Press, 2025. https://doi.org/10.1201/9781003559047-530.

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Setiawan, Budi. "Implementation of SISTRO (Truck Scheduling System) to Enhance Supply Chain Efficiency and Performance to Support Industrial Revolution 4.0 in Petrokimia Gresik." In Proceedings of the 19th International Symposium on Management (INSYMA 2022). Atlantis Press International BV, 2022. http://dx.doi.org/10.2991/978-94-6463-008-4_133.

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AbstractSISTRO, a truck scheduling and management system, was developed to optimize stock fulfillment following the government regulation (Peraturan Menteri Perdagangan/Permendag) and the distribution process of subsidized fertilizer from Gresik Warehouse of PT Petrokimia Gresik (PG) to Buffer Warehouse located in almost every province in Java Island. The volume that must be distributed is around 5.4 million tons of fertilizer/year. During the implementation, a critical problem is the lack of integration and single information about the supply chain and truck loading process. The information includes (1) truck arrival delay, (2) the difference between planning and reality, and (3) the availability of workers. These three pieces of information are out of sync, so they have direct and indirect impacts. The direct impact is the potential for unscheduled open storage (OPS) in Gresik warehouse. At the same time, the indirect impact is the high logistics costs in the form of land transportation cost increases every year and the potential to lose the opportunity/moment to sell goods due to delays in fertilizer distribution. Therefore, a solution is needed by creating an integrated system to accommodate related parties in truck schedule arrivals, stock availability, and labor availability in the loading line warehouse, hereinafter referred to as SISTRO. The SISTRO’s scope of work starts from the distribution of quota allocations for heavy loading that has been adjusted to stock conditions and loading capacity in each warehouse so that the truck vendors can book the loading plan according to the schedule they want, based on the POSTO that has been uploaded on the SISTRO application and partners will get a booking code. The booking code will later be printed as a security pass. The security pass will later be scanned at all SISTRO checkpoints, which is proven can reduce the number of late arrivals for trucks to load appropriately from an average of 1.361 events/month to just 553 events/month. This project impacts several sectors, including reducing the risk of losing chances to sell goods that previously averaged 24,034 tons/month equivalent to Rp. 110 billion/month, a decrease in the OPS quantity (which is currently happening due to oversupply that does not match with quantum distribution). There has been no increase in inland transportation costs for 3 years and monitoring all license numbers and transportation partners so that there is no combined number of registration numbers. In fact, SISTRO can be used by all logistics companies.

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Hu, Zongbo. "Analysis of Impact Resistance and Optimization of Protective Capacity for Steel Reinforced Concrete Columns." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2024. https://doi.org/10.1007/978-981-97-6238-5_14.

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AbstractThrough simulated horizontal impact tests on steel-reinforced concrete column components, the dynamic response of steel-reinforced concrete columns under different impact heights, boundary conditions, and impact velocities was obtained. The results indicate that with an increase in impact energy, the peak impact force shows an upward trend. As the impact height increases, the impact force gradually decreases, with higher forces near the end. When the mass of the impacting object is 2580 kg and the minimum velocity is 4.58 m/s, the maximum residual displacement occurs in the impact zone. Based on the simulated test results, the impact failure modes of steel-reinforced concrete columns can be classified as slight damage, moderate damage, severe damage, and critical damage. A model reflecting the changes in mechanical characteristics of steel-reinforced concrete column structures was established based on the damage states and impact resistance mechanisms at each loading stage of the column components. Active and passive protective structures were proposed.

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Lemouchi, Rafik, Mohamed Assaf, Mohamed Al-Hussein, Khaoula Boutouhami, and Ahmed Bouferguene. "Safety Training for Rigging Using Virtual Reality." In CONVR 2023 - Proceedings of the 23rd International Conference on Construction Applications of Virtual Reality. Firenze University Press, 2023. http://dx.doi.org/10.36253/10.36253/979-12-215-0289-3.18.

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Tower and Mobile Cranes are some of the most commonly used heavy equipment in all construction sites, and any crane failures could lead to significant human and monetary losses. Moreover, rigging configuration determination is a critical task that requires the rigging crew to have significant experience and knowledge of various failure modes that can be encountered when performing lifting operations. However, despite the criticality of training riggers, there has yet to be a comprehensive tool used to train and guide inexperienced riggers, and hence, more practical tools are needed. This paper proposes a framework for using Virtual reality (VR) and simulation to train riggers to identify the optimal rigging configurations based on the lift type and the external conditions. Through 3D modeling, the critical components of the rigging system are modeled to accurately simulate the rigging system and their performance when faced with critical loading scenarios. The developed framework is expected to allow inexperienced riggers to identify critical failure modes and enhance construction operations' overall safety performance and productivity. Furthermore, several scenarios are assessed based on historical evidence for rigging configuration failures, and the efficiency of the training tool is assessed through real-life scenarios and tests

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Lemouchi, Rafik, Mohamed Assaf, Mohamed Al-Hussein, Khaoula Boutouhami, and Ahmed Bouferguene. "Safety Training for Rigging Using Virtual Reality." In CONVR 2023 - Proceedings of the 23rd International Conference on Construction Applications of Virtual Reality. Firenze University Press, 2023. http://dx.doi.org/10.36253/979-12-215-0289-3.18.

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Tower and Mobile Cranes are some of the most commonly used heavy equipment in all construction sites, and any crane failures could lead to significant human and monetary losses. Moreover, rigging configuration determination is a critical task that requires the rigging crew to have significant experience and knowledge of various failure modes that can be encountered when performing lifting operations. However, despite the criticality of training riggers, there has yet to be a comprehensive tool used to train and guide inexperienced riggers, and hence, more practical tools are needed. This paper proposes a framework for using Virtual reality (VR) and simulation to train riggers to identify the optimal rigging configurations based on the lift type and the external conditions. Through 3D modeling, the critical components of the rigging system are modeled to accurately simulate the rigging system and their performance when faced with critical loading scenarios. The developed framework is expected to allow inexperienced riggers to identify critical failure modes and enhance construction operations' overall safety performance and productivity. Furthermore, several scenarios are assessed based on historical evidence for rigging configuration failures, and the efficiency of the training tool is assessed through real-life scenarios and tests

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Tiwari, Binod, and Beena Ajmera. "Advancements in Shear Strength Interpretation, Testing, and Use for Landslide Analysis." In Progress in Landslide Research and Technology. Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-44296-4_1.

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AbstractLandslides are devastating natural disasters that result in loss of life, property damage, and community disruption. They have global impacts, causing fatalities and economic losses, particularly in mountainous regions near densely populated areas. Landslides can be caused by natural factors, including water saturation from heavy rainfall, snowmelt, and changes in groundwater levels, as well as seismic activity such as earthquakes and volcanic eruptions. Human activities, such as altering drainage patterns, destabilizing slopes, and removing vegetation, also contribute to landslides. Construction and development on slopes, over-steepening, and improper land management practices can further increase the risk of landslides. A key component in understanding the stability of slopes will be knowledge of the shear strength of the soils involved. However, to do so, it will be necessary to understand the various measuring methods of shear strength, loading conditions, and other parameters. Different methods and tests are employed to determine the shear strength of soil, depending on the specific conditions and objectives. Direct shear tests are often utilized to measure peak and fully softened shear strengths. Triaxial tests, on the other hand, are suitable for assessing both peak and fully softened shear strengths under drained or undrained conditions. Generally, the ring shear device is preferred for measurements of the residual shear strengths. However, multiple reversal direct shear tests and specifically modified direct shear tests as well as triaxial tests have also been utilized for this purpose. The cyclic simple shear test is recommended as an effective technique for replicating in-situ conditions to investigate the cyclic resistance and post-cyclic shear strengths of soils. Several correlations have been developed in the literature to estimate various shear strengths, including the fully softened and residual shear strengths of soil, as summarized in this paper. These correlations utilize parameters such as the liquid limit, plasticity index, mineralogy, clay fraction, and effective normal stress. The undrained shear strength of over-consolidated soils can be captured with the use of the Stress History and Normalized Soil Engineering Properties (SHANSEP) method. Extending this approach with the use of the normalized undrained strength ratio can result in two correlations that can capture the undrained shear strength. The paper also presents correlations for the true and base friction angles to estimate the shear strength using Hvorslev’s theory. This allows for a departure from the use of the cohesion intercept and friction angle in the Mohr-Coulomb failure envelope, both of which are dependent on the over-consolidation ratio. The power function effectively represents the cyclic strength curves in soils with the curve fitting parameters a and b defining their shape and position. A correlation between the normalized undrained strength ratio and post-cyclic effective stress ratio to assess the undrained shear strength after cyclic loading was also introduced. This correlation was shown to also capture the effects of excess pore pressure dissipation and reductions in shear strength induced by a second cyclic load.

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Zheng, Wulue, Wenjun Yuan, Fuchun Zhang, Ming Fan, and Xin Zhang. "Experimental Study on Mechanical Properties of Foundation Soil Under Unloading Condition." In Advances in Transdisciplinary Engineering. IOS Press, 2024. https://doi.org/10.3233/atde240979.

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The stability of transmission line tower foundation soil is crucial for the proper functioning of high-voltage transmission lines. To better understand the mechanisms behind soil deformation and instability, soil samples were collected from a transmission line tower foundation in Guangzhou. Tests were conducted under different stress paths to examine the effects of loading and unloading on the mechanical properties of the soil. A constitutive model was developed to account for unloading effects. The results showed that the stress-strain relationship of the foundation soil exhibited normalized characteristics under loading conditions, with peak deviator stress increasing with confining pressure. Soil failure was predominantly characterized by bulging with minor surface cracks. When taking unloading effects into account, the soil initially underwent strain softening followed by strain hardening. The peak deviator stress at failure was lower than under loading, resulting in more severe soil failure. The study highlights the importance of considering the effects of excavation and unloading on foundation soil when constructing tower foundations, and implementing support measures in advance for stress compensation.

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"Loading." In Concrete Under Severe Conditions, Two Volume Set. CRC Press, 2010. http://dx.doi.org/10.1201/b10552-187.

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"Performance under severe loading." In Concrete Under Severe Conditions, Vol 2. CRC Press, 2010. http://dx.doi.org/10.1201/b11947-28.

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"Performance under severe loading." In Concrete Under Severe Conditions, Two Volume Set. CRC Press, 2010. http://dx.doi.org/10.1201/b10552-167.

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Conference papers on the topic "Severe loading condition"

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Nisbet, W. J. R., R. H. C. Hartman, and G. vd Handel. "Rippled Strain Rate Test for CRA Sour Service Materials Selection." In CORROSION 1997. NACE International, 1997. https://doi.org/10.5006/c1997-97058.

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Abstract To ensure economic and reliable materials selection it is necessary to evaluate corrosion resistant alloys (CRAs) under the most severe environmental and mechanical conditions that are realistically anticipated in service. This requires identification and control of the parameters that are needed to characterise an environment in terms of its impact on environmentally assisted cracking (EAC). The primary factors that need to be defined and controlled when assessing EAC in sour environments are: H2S level, pH, chloride level, temperature range and loading condition. Conventional EAC te

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Ngo, Tri, and Cornel Sultan. "Simulation of Helicopter Shipboard Operations with Spatial Velocity Gradients in the Ship's Airwake." In Vertical Flight Society 71st Annual Forum & Technology Display. The Vertical Flight Society, 2015. http://dx.doi.org/10.4050/f-0071-2015-10220.

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A mathematical model of a generic helicopter that captures essential helicopter-ship's airwake dynamics (e.g. fuselage dynamics, blade flapping and lead/lagging, interactional aerodynamic effects of the ship's airwake) has been developed in the implicit nonlinear ODE form for control design and evaluation. A procedure in which the ship's airwake characteristics with spatial velocity gradients are integrated into the rotor blade dynamics is described using polynomial interpolations from available CFD data. A simulation of the automatic lateral reposition toward the ship in 30-deg wind-over-deck

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BENÍTEZ, A., and M. POLZINETTI. "Permeability and condition of concrete in the Argentine Antarctic‘Carlini’ Base." In 9th International Conference On Concrete Under Severe Conditions - Environment and Loading. MENVIA, 2019. http://dx.doi.org/10.31808/5ca6e03d5ca4f0d406ac88a4.

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Takatani, Tomiya, and Takanori Kaya. "Stability Analysis of Unburied Offshore Pipeline on Carobonate Soil Under Severe Storm Condition." In ASME 2007 26th International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2007. http://dx.doi.org/10.1115/omae2007-29224.

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The purpose of this paper is to investigate the stability of an unburied offshore pipeline resting on carbonate sand under severe storm condition. Pore pressure accumulation and pipeline movement during cyclic loading caused by waves and currents are numerically investigated. Both drag and lift forces are numerically obtained for 100 years return period storm condition using the Fourier decomposition method. Non-linear spring element is used to simulate a slip phenomenon between pipeline and seabed. The effects of both bi-linear and tri-linear spring element models on pipeline movement and por

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Salim, N. A., M. M. Othman, I. Musirin, and M. S. Serwan. "Identifying severe loading condition during the events of cascading outage considering the effects of protection system hidden failure." In 2013 IEEE 7th International Power Engineering and Optimization Conference (PEOCO). IEEE, 2013. http://dx.doi.org/10.1109/peoco.2013.6564576.

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Islam, Nazrul, and Md Ala Uddin. "Life Prediction of Modified Grad 91 Tube-Sheet Structures Under Creep-Fatigue Loading Condition." In ASME 2021 Pressure Vessels & Piping Conference. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/pvp2021-62066.

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Abstract This study deals with the creep-fatigue strength evaluation of a tube-sheet structure made of Mod. Grade 91 steel. Such a structure is one of the components of Japan Sodium Fast Reactor (JSFR) that suffers the most severe loadings in the reactor and one of the most difficult components to design because of its complex three-dimensional semispherical shape with an arrangement of numerous holes. A test model of this component was developed by Japan Atomic Energy Agency and test was subjected to 1873 cycles of severe thermal transient loading in which elevated temperature at 600 °C and 2

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Kim, Tae Hyun, Yoon-Suk Chang, and Bong-Sang Lee. "Structural Integrity Assessment of RPV Under Severe Accident Conditions With Creep Constants Correlation." In ASME 2016 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/pvp2016-63232.

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Creep behavior of nuclear materials is susceptible factor for structural integrity assessment. Particularly, RPV (Reactor Pressure Vessel) under severe accident with a core melting conditions may go through its wall penetration caused by direct contact with corium as well as additional unexpected failure by creep damage. Even though various experiments and analyses were conducted to resolve this special integrity issue, there are still many uncertainties which come from high temperature range, availabilities in only isothermal analysis and so on. In the present study, the state-of-the-art ther

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Kai, Satoru, Masakazu Ichimiya, and Naoto Kasahara. "Prediction Concept of Ratchet-Induced Collapse Under Deadweight and Seismic Loading." In ASME 2022 Pressure Vessels & Piping Conference. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/pvp2022-84508.

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Abstract The failure mode estimation of essential components in nuclear facilities under beyond design-basis events (BDBEs) is necessary to mitigate the consequences during severe accident conditions. The plastic collapse induced by ratcheting, defined as the ratchet-induced collapse in this study, is one of the failure modes of piping components under seismic loading. This failure mode was first confirmed in the Pipe-fitting dynamic reliability program (PFDRP) conducted by EPRI in the 1980s. However, the mechanism and occurrence condition of this failure remained unclear for decades because t

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Yi, Jin-Hak, Kwang-Soo Lee, Jin-Soon Park, and Woo-Sun Park. "Structural Health Monitoring System for “Uldolmok” Tidal Current Power Pilot Plant and Its Applications." In ASME 2009 28th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2009. http://dx.doi.org/10.1115/omae2009-80101.

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In this paper, the structural health monitoring system for “Uldolmok Tidal Current Power Pilot Plant (TCPP)” is briefly introduced and the measured data obtained up to now are analyzed. TCPP is basically constructed in the ocean area with high current speed, and therefore the current loading is governing the structural safety than the wave or wind loadings. Usually the soft soils are eroded due to the current and the soft and hard rocks are composing the seabed in strait which tidal current of high speed. Therefore the coring is not so easy due to rock seabed condition and also the operational

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Abid, Muhammad, Kamran Ahmed Khan, and Javed Ahmad Chattha. "Performance of a Gasketed Bolted Flange Joint Under Combined Structural and Thermal Transient Loading (Taking Bolt Scatter Into Consideration): FEA Approach." In ASME 2009 Pressure Vessels and Piping Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/pvp2009-77891.

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Performance of a bolted flange joint is characterized mainly by its ‘strength’ and ‘sealing capability’. The weakest part of a high temperature and pressure envelope is the gasket in bolted flange joints, as these are prone to leakage. It causes loss of productivity and in severe cases, loss of lives. There is a need to evaluate the sealing performance of a gasketed bolted flange joint (GBFJ) under combined structural and thermal transient loadings as these occur in industrial applications. In this paper using complete 3D Finite Element Model, the joint’s performance is studied during bolt up

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Reports on the topic "Severe loading condition"

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Rushing, John, Lulu Edwards, Haley Bell, and Margarita Ordaz. Rapid assessment tools for estimating trafficability of low volume roads. Engineer Research and Development Center (U.S.), 2025. https://doi.org/10.21079/11681/49560.

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Rapid assessment of low-volume road surfaces remains a challenge when attempting to forecast allowable vehicle crossings. Variations in soil type, compaction effort, and moisture content of the soil can greatly affect trafficability, and predictive equations for soil deformation under vehicle loads often have reduced reliability for low-strength materials. Portable tools to characterize soil stiffness and corresponding relationships to load-induced deformation are needed. In this effort, researchers performed comparative testing of multiple rapid assessment tools as potential devices for givin

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Acosta, Felipe, and Guillermo Riveros. Repair of corroded steel girders of hydraulic steel structures (HSS) using fiber-reinforced polymers (FRP). Engineer Research and Development Center (U.S.), 2023. http://dx.doi.org/10.21079/11681/47404.

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Although steel hydraulic structures have a protective system to prevent corrosion, this type of deterioration will eventually occur due to the constant exposure to harsh environmental conditions. There are several techniques that can be implemented to repair corroded steel structural elements. This report presents a numerical study to evaluate the mechanical behavior of corroded steel girders used in hydraulic steel structures and to evaluate several carbon fiber–reinforced polymers (CFRP) layups to repair them. The girders were modeled as simply supported with four-point loading boundary cond

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Tiku, Sanjay. PR-214-203820-R01 Performance Evaluation of ILI for Dents with Cracks and Gouges. Pipeline Research Council International, Inc. (PRCI), 2023. http://dx.doi.org/10.55274/r0000031.

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Pipeline integrity management involves the analysis of pipeline condition information (e.g., pipe size, presence and size of features), operational/environmental conditions and line pipe material properties in engineering assessment (fitness-for-purpose) tools to evaluate operational risk. While nominal or minimum specified material properties and SCADA reported, design or estimated operational loading conditions can be considered, pipeline operators depend heavily on pipeline condition data from in-line inspection (ILI) systems. The current project presents the details of performance trials e

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Walshire, Lucas, Benjamin Breland, Joseph Dunbar, and Maureen Corcoran. Old River Control Low Sill Structure : monitoring and performance. Engineer Research and Development Center (U.S.), 2025. https://doi.org/10.21079/11681/49640.

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The Old River Low Sill Structure (ORLSS) is located approximately 25 mi south of Vidalia, LA, and is part of the Old River Control Complex. The structure is founded on steel piles and is a 566-foot-long concrete structure constructed in 1959. The structure resembles a dam with 11, 44-foot-wide gates to prevent migration of the Mississippi River’s current course to a hydraulically shorter course down the Atchafalaya River. A reanalysis was undertaken by the US Army Engineer Research and Development Center to investigate the current level of stability and the potential for adjusting the operatin

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Griffin, Aaron, and Matthew Murray. Evaluation of the Bridge Supplement Set overhead cable system with uneven bank heights. Engineer Research and Development Center (U.S.), 2024. http://dx.doi.org/10.21079/11681/49214.

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A numerical model was developed to analyze the effects of environmental conditions and construction layout on the structural capacity of the modernized Bridge Supplemental Set (BSS). Environmental variables included even and uneven bank heights, soil strength, river width, and river flow rate conditions. Construction variables included tower placement, tower guy line orientation, and catenary length. Loading conditions, the drag force of the bridge due to river current, were conservatively applied with the assumption of uniform flow rate across the entire river width to account for the wide ra

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Upadhyaya, Shrini, Dan Wolf, William J. Chancellor, Itzhak Shmulevich, and Amos Hadas. Traction-Soil Compaction Tradeoffs as a Function of Dynamic Soil-Tire Interation Due to Varying Soil and Loading Conditions. United States Department of Agriculture, 1995. http://dx.doi.org/10.32747/1995.7612832.bard.

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The objectives of this study were to investigate soil-pneumatic tire interaction and develop traction-soil compaction prediction model. We have developed an inverse solution technique that employs a response surface methodology to determine engineering properties of soil in-situ. This technique is useful in obtaining actual properties of soil in-situ for use in traction and soil compaction studies rather than using the values obtained in the laboratory by employing remolded and/or disturbed soil samples. We have conducted extensive field tests i the U.S. to develop semi-empirical traction pred

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Chauhan, Vinod. L52307 Remaining Strength of Corroded Pipe Under Secondary Biaxial Loading. Pipeline Research Council International, Inc. (PRCI), 2009. http://dx.doi.org/10.55274/r0010175.

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Corrosion metal-loss is one of the major damage mechanisms to transmission pipelines worldwide. Several methods have been developed for assessment of corrosion defects, such as ASME B31G, RSTRENG and LPC. These methods were derived based on experimental tests and theoretical/numerical studies of the failure behavior of corroded pipelines subjected only to internal pressure loading. In the vast majority of cases, internal pressure loading will be the main loading mechanism on the pipeline. However, there may be instances when pipelines could also be subjected to significant loading from the env

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Wilkowski, G. M., D. Rudland, P. Mincer, B. Metrovich, and D. Rider. ASME-PVP05 Brittle-to-Ductile Fracture Initiation Transition Temperature for Old Linepipe w Surface-Crack. Pipeline Research Council International, Inc. (PRCI), 2005. http://dx.doi.org/10.55274/r0011772.

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Much work has been done to assess constraint effects on the crack-driving force for specimens and cracks in pipes. The material's transition temperature where the fracture process changes from ductile tearing to cleavage fracture at crack initiation is affected by the constraint conditions but is a material property that cannot be determined analytically. This paper presents a methodology to account for constraint effects to predict the lowest temperature where ductile fracture initiation occurs and relates that temperature back to Charpy impact data for X60 and lower grades, particularly for

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Bruce. L52090 Near-Neutral pH SCC - Dormancy and Re-Initiation of Stress Corrosion Cracks. Pipeline Research Council International, Inc. (PRCI), 2003. http://dx.doi.org/10.55274/r0011360.

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The objective of this research project was to identify the environmental, metallurgical, and mechanical conditions that lead to dormancy and re-initiation of previously dormant stress corrosion cracks. These parameters would assist pipeline operators in mitigating near-neutral pH SCC on their systems, and allocating resources for pipeline maintenance. Unload-reload transients were found to increase the crack growth rate in the majority of the experiments and to re-initiate dormant stress corrosion cracks in several cases. On the other hand, there was no consistent effect of the presence or mag

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Wilkowski, Gery. L52249 Failure Initiation Modes of Pipe with High Charpy Transition Temperature. Pipeline Research Council International, Inc. (PRCI), 2004. http://dx.doi.org/10.55274/r0010352.

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This project was developed to establish a general methodology to; (a) determine a simple way to assess what is the lowest temperature where ductile crack initiation will occur for a sharp crack or a blunt flaw (i.e., corrosion), (b) to developed several optional approaches to predict the transition temperature shifts that depend on what type of lab specimen data are available, and (c) show validation from past tests as well as by conducting tests on older vintage linepipe steels. This report presents a methodology that determines the lowest temperature where ductile fracture would occur for ei

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