Academic literature on the topic 'Permanent deformation model'

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Journal articles on the topic "Permanent deformation model"

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Xiao, Yuanjie, Erol Tutumluer, and Debakanta Mishra. "Performance Evaluations of Unbound Aggregate Permanent Deformation Models for Various Aggregate Physical Properties." Transportation Research Record: Journal of the Transportation Research Board 2525, no. 1 (2015): 20–30. http://dx.doi.org/10.3141/2525-03.

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Permanent deformation or rutting is the main performance indicator of unbound aggregate layers used in flexible pavements. This paper evaluates the prediction abilities of unbound aggregate base or subbase permanent deformation models in use or proposed for use in the Mechanistic–Empirical Pavement Design Guide (MEPDG) approach. Repeated load triaxial-type permanent deformation tests were conducted on three unbound aggregate materials—limestone, dolomite, and uncrushed gravel—commonly used for pavement base and subbase and subgrade replacement applications in Illinois. The test matrix was desi
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Zheng, Rui. "Thorough Investigation of Constitutive Model of Asphalt Pavement Permanent Deformation." Applied Mechanics and Materials 744-746 (March 2015): 1331–34. http://dx.doi.org/10.4028/www.scientific.net/amm.744-746.1331.

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In this paper, the constitutive model of the asphalt pavement permanent deformation is analyzed, which is based on the asphalt pavement permanent deformation. In order to reasonably predict the asphalt pavement permanent deformation, the domestic and foreign research results are thorough investigated. It shows that the nonlinear viscoelastic - elastoplastic constitutive model of Peng Miaojuan improves the defects of various models. This constitutive model comprehensively reflects the characteristics of permanent deformation of asphalt pavement.
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Głuchowski, Andrzej, and Wojciech Sas. "Impact of Cyclic Loading on Shakedown in Cohesive Soils—Simple Hysteresis Loop Model." Applied Sciences 10, no. 6 (2020): 2029. http://dx.doi.org/10.3390/app10062029.

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The objective of this study is to characterize the permanent deformations and to present a mathematical model that enables the prediction of permanent strain during cyclic loading. First, laboratory cyclic triaxial tests are conducted on sandy silty clay samples to gather the data concerning the permanent deformation characteristics. The article discusses the shakedown theory and abation phenomena, and we present the Simple Hysteresis Loop Model (SHLM) based on the stress-controlled test results. The determined permanent deformation properties are a base for the development of SHLM parameters.
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Lin, Tianshu, Tatsuya Ishikawa, and Bin Luo. "Applicability of Modified University of Illinois at Urbana–Champaign Model for Unbound Aggregate Material with Different Water Content." Transportation Research Record: Journal of the Transportation Research Board 2673, no. 3 (2019): 439–49. http://dx.doi.org/10.1177/0361198119827530.

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This paper proposes a modified University of Illinois at Urbana–Champaign (UIUC) model to predict permanent deformation behavior of unbound aggregate materials. Most existing models relate permanent deformation to resilient properties, whereas the UIUC model treats shear strength as a critical factor in permanent deformation behavior. Three types of test, monotonic shearing test, cyclic axial loading test, and cyclic axial and shear loading test, were conducted by multi-ring shear apparatus on two kinds of parallel grading aggregate materials, natural crusher-run and recycled crusher-run obtai
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Stark, Timothy D., Michael H. Beaty, Peter M. Byrne, et al. "Seismic deformation analysis of Tuttle Creek Dam." Canadian Geotechnical Journal 49, no. 3 (2012): 323–43. http://dx.doi.org/10.1139/t11-107.

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To facilitate the design of seismic remediation for Tuttle Creek Dam in east central Kansas, a seismic finite difference analysis of the dam was performed using the software FLAC and the UBCSAND and UBCTOT soil constitutive models. The FLAC software has a key advantage because it can use calibrated site-specific constitutive models. Earlier deformation analyses using a hyperbolic constitutive model for the foundation fine-grained materials did not properly represent the modulus and strength reduction and predicted extremely large permanent deformations. Cyclic triaxial laboratory tests using h
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Wang, Xiu Shan, Xiao Jun Ding, and Yong Li Xie. "Permanent Deformation Prediction Model of Graded Gravel under Repeated Load." Advanced Materials Research 168-170 (December 2010): 217–21. http://dx.doi.org/10.4028/www.scientific.net/amr.168-170.217.

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In order to predict the permanent deformation of graded gravel, through to the existing flexible pavement granular base permanent deformation estimate model's contrastive analysis, combined with repeated dynamic triaxial test , selects Wei Mi permanent deformation estimate model as the loose aggregate permanent deformation of the estimate model, using 1stopt statistical analysis software carries on the nonlinear curve fit for the parameter, obtained two kinds of norms of graded broken stone aggregates forecast model of the correlation among the types : permanent deformation of the coefficient
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Leonardi, Giovanni, and Federica Suraci. "A 3D-FE Model for the Rutting Prediction in Geogrid Reinforced Flexible Pavements." Sustainability 14, no. 6 (2022): 3695. http://dx.doi.org/10.3390/su14063695.

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Permanent deformation (rutting) is an important disturbing failure on flexible road pavements. This phenomenon appears on the flexible pavement as longitudinal depressions, and it is a consequence of the degradation of materials under high traffic loading based on consolidation/densification, surface wear, plastic/shear flow, and mechanical deformation. Hence, the rutting phenomenon depends on the accumulation of permanent deformations on pavement surfaces subjected to repeated wheel loads. In recent years, several studies have confirmed that the service life of asphalt pavements can be increa
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Zou, De-gao, Jing-mao Liu, Xian-jing Kong, Chen-guang Zhou, and Qing-po Yang. "A simple permanent deformation model of rockfill materials." Water Science and Engineering 11, no. 4 (2018): 302–9. http://dx.doi.org/10.1016/j.wse.2018.12.001.

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Mei, Huihao, Sajjad Satvati, and Wuming Leng. "Experimental study on permanent deformation characteristics of coarse-grained soil under repeated dynamic loading." Railway Engineering Science 29, no. 1 (2021): 94–107. http://dx.doi.org/10.1007/s40534-021-00233-2.

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AbstractPractical assessment of subgrade settlement induced by train operation requires developing suitable models capable of describing permanent deformation characteristics of subgrade filling under repeated dynamic loading. In this paper, repeated load triaxial tests were performed on coarse-grained soil (CGS), and the axial permanent strain of CGS under different confining pressures and dynamic stress amplitudes was analysed. Permanent deformation behaviors of CGS were categorized based on the variation trend of permanent strain rate with accumulated permanent strain and the shakedown theo
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Fang, Rui, Hui Gao, and Xiang Qin Bian. "Three-Stage Permanent Deformation Behavior of Subgrade Soils." Advanced Materials Research 374-377 (October 2011): 1942–46. http://dx.doi.org/10.4028/www.scientific.net/amr.374-377.1942.

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The development of the permanent deformation of subgrade soils under repeated load tests may consists of three stages, namely the primary, secondary and tertiary stages, but the existing models can not describe this behavior very well, so a new model is required to be developed. Based on the creep equation of the soil under static load, a mechanistic model is developed to describe the development of the permanent deformation of the soil under repeated load tests. Triaxial repeated load tests are conducted for silty soils and results show that, under some conditions, the development of the perm
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Dissertations / Theses on the topic "Permanent deformation model"

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Borges, RÃmulo Luiz. "Permanent deformation in asphalt mixtures from viscoplastic shift model and triaxial repeated load test." Universidade Federal do CearÃ, 2014. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=13192.

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FundaÃÃo Cearense de Apoio ao Desenvolvimento Cientifico e TecnolÃgico<br>Permanent deformation or rutting is a major distress in asphalt pavements. To predict permanent deformation of asphalt mixtures the dynamic creep test is often used in laboratory, with the result presented in terms of the so called flow number. However, for this work it was performed the triaxial repeated permanent deformation load test, a confined test that better represents field conditions. The models that incorporate the flow number do not represent the main zone of the dynamic creep test result, denoted secondary re
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Tashman, Laith. "Microstructural viscoplastic continuum model for asphalt concrete." Diss., Texas A&M University, 2003. http://hdl.handle.net/1969.1/313.

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This dissertation presents the development of an anisotropic viscoplastic continuum damage model to describe the permanent deformation of asphalt pavements. The model is developed to account for several phenomena that influence the permanent deformation of Asphalt Concrete (AC) at high temperatures. These phenomena include strain rate dependency, confining pressure dependency, dilation, aggregate friction, anisotropy, and damage. The model is based on Perzyna's theory of viscoplasticity with Drucker-Prager yield function modified to account for the microstructure anisotropy and damage. A para
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Zhalehjoo, Negin. "Characterisation of the deformation behaviour of unbound granular materials using repeated load triaxial testing." Thesis, Federation University of Australia, 2018. http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/166953.

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Unbound Granular Materials (UGMs) are used in the base/subbase layers of flexible pavements for the majority of roads around the world. The deterioration of pavements increases with the increase of traffic loadings. To ensure the long-term performance and serviceability of pavement structures through a realistic design, the precise evaluation and comprehensive characterisation of the resilient and permanent deformation behaviour of pavement materials are essential. The present PhD study aims to investigate the characterisation of the resilient and permanent deformation behaviour of four road b
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Rahman, Mohammad Shafiqur. "Characterising the Deformation Behaviour of Unbound Granular Materials in Pavement Structures." Doctoral thesis, KTH, Väg- och banteknik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-162277.

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Unbound granular materials (UGMs) used in the base and sub-base layers of flexible pavements play a significant role in the overall performance of the structure. Proper understanding and characterization of the deformation behaviour of UGMs in pavement structures are, therefore, vital for the design and maintenance of flexible pavements. In this study, the resilient deformation (RD) and the permanent deformation (PD) behaviour of UGMs were investigated for the better understanding and improved modelling of these deformation characteristics. The study is based on a series of repeated-load triax
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Yideti, Tatek Fekadu. "Performance model for unbound grnular materials pavements." Licentiate thesis, KTH, Väg- och banteknik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-97752.

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Recently, there has been growing interest on the behaviour of unbound granular material in road base layers. Researchers have studied that the design of a new pavement and prediction of service life need proper characterization of unbound granular materials, which is one of the requirements for a new mechanistic design method in flexible pavement. Adequate knowledge of the strength and deformation characteristics of unbound layer in pavements is a prerequisite for proper thickness design, residual life determination, and overall economic optimization of the pavement structure. The current know
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Ozturk, Hande Isik. "Parametric Study On Selected Mathematical Models For Dynamic Creep Behavior Of Asphalt Concrete." Master's thesis, METU, 2007. http://etd.lib.metu.edu.tr/upload/12609023/index.pdf.

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Rut formation has long been recognized as a distress mechanism in flexible pavements. One of the causes of rut formation in flexible pavements is permanent deformation of uppermost asphalt concrete layers due to repeatedly applied traffic loading. The long term permanent deformation of asphalt concrete under repeated load is commonly called as dynamic creep. The primary objective of this thesis is to examine dynamic creep behavior of asphalt concrete specimens tested in laboratory and also study some suitable mathematical models for representing dynamic creep behavior. In this study, a set of
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Onyango, Mbakisya A. "Verification of mechanistic prediction models for permanent deformation in asphalt mixes using accelerated pavement testing." Diss., Manhattan, Kan. : Kansas State University, 2009. http://hdl.handle.net/2097/1362.

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Pettinari, Matteo <1980&gt. "Performance evaluation of low environmental impact asphalt concretes using the mechanistic empirical design method based on laboratory fatigue and permanent deformation models." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2011. http://amsdottorato.unibo.it/3485/.

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The "sustainability" concept relates to the prolonging of human economic systems with as little detrimental impact on ecological systems as possible. Construction that exhibits good environmental stewardship and practices that conserve resources in a manner that allow growth and development to be sustained for the long-term without degrading the environment are indispensable in a developed society. Past, current and future advancements in asphalt as an environmentally sustainable paving material are especially important because the quantities of asphalt used annually in Europe as well as in
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Kaška, Zdeněk. "Posouzení asfaltového koberce drenážního a tenkého s asfaltem modifikovaným přísadou TecRoad." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2012. http://www.nusl.cz/ntk/nusl-225495.

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This work is focused on the design and determination of the properties of porous asphalt and asphalt concrete for very thin layers with TecRoad addition. The water sensitivity, particle loss, stiffness, fatigue and low temperature characteristics and resistance to permanent deformation are determined for a description of mixtures properties. Subsequently, the mixtures are compared and recommendations for use in maintenance and reconstruction of roads are prepared.
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Renza, Jaroslav. "Využití tenkých obrusných vrstev s vysoce polymerem modifikovaným asfaltem." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2019. http://www.nusl.cz/ntk/nusl-392024.

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The diploma thesis deals with technology for the implementation and use of asphalt concrete for very thin layers (BBTM) with use of asphalt binder of high-polymer modification (HiMA). Further, there are described selected and performed functional tests. Thesis also contains design of a mixture for bituminous concrete type targeted for very thin layers with different types of binders. After a suitable design of the mixture, laboratory tests were carried out (stiffness modulus, resistance to permanent deformation, low temperature characteristics, water resistance and particle loss). The output o
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Book chapters on the topic "Permanent deformation model"

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Li, Shiyuan, Xiaoqiang Gu, Jiangu Qian, and Aiguo Li. "A Practical Model to Predict Permanent Deformation of Sand Under Cyclic Loading." In Proceedings of GeoShanghai 2018 International Conference: Fundamentals of Soil Behaviours. Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-0125-4_83.

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Rahman, M. S., S. Erlingsson, A. Ahmed, and Y. Dinegdae. "A model for the permanent deformation behavior of the unbound layers of pavements." In Eleventh International Conference on the Bearing Capacity of Roads, Railways and Airfields, Volume 1. CRC Press, 2021. http://dx.doi.org/10.1201/9781003222880-25.

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Ba, Makhaly. "Correlation Between Resilient Modulus and Permanent Deformation During a Large Scale Model Experiment of Unbound Base Course." In Lecture Notes in Civil Engineering. Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-6713-6_37.

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Ramos, Ana, António Gomes Correia, and Rui Calçada. "Neural Network-Based Model to Predict Permanent Deformation Induced in the Subgrade by the Passage of the Trains." In Lecture Notes in Civil Engineering. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-20241-4_4.

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Leiva-Villacorta, Fabricio, Adriana Vargas-Nordcbeck, José Pablo Aguiar-Moya, and Luis Loría-Salazar. "Development and Calibration of Permanent Deformation Models." In The Roles of Accelerated Pavement Testing in Pavement Sustainability. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-42797-3_37.

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Sarvanis, Gregory C., Spyros A. Karamanos, Polynikis Vazouras, Panos Dakoulas, and Kyriaki A. Georgiadi-Stefanidi. "Simplified Analytical Models for Pipeline Deformation Analyses Due to Permanent Ground Deformation." In Geohazards and Pipelines. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-49892-4_9.

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Dinegdae, Yared, and Sigurdur Erlingsson. "Evaluation of Permanent Deformation Models for Flexible Pavements Using Accelerated Pavement Testing." In Lecture Notes in Civil Engineering. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-55236-7_41.

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Leon, Lee P. "Development of Permanent Deformation Models with the Inclusion of AIMS Coarse Aggregate Angularity." In RILEM Bookseries. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-46455-4_71.

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"Laboratory characterization of North Carolina base course aggregates for permanent deformation model development and calibration." In Asphalt Pavements. CRC Press, 2014. http://dx.doi.org/10.1201/b17219-95.

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Werkmeister, S., R. Numrich, and F. Wellner. "The Development of a Permanent Deformation Design Model for Unbound Granular Materials with the Shakedown-Concept." In Bearing Capacity of Roads, Railways and Airfields. CRC Press, 2020. http://dx.doi.org/10.1201/9781003078821-29.

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Conference papers on the topic "Permanent deformation model"

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Li, Qiang, and Haidong Kuai. "Regional Calibration of Asphalt Concrete Layers Permanent Deformation Model for Mechanistic-Empirical Pavement Design Guide." In Tenth International Conference of Chinese Transportation Professionals (ICCTP). American Society of Civil Engineers, 2010. http://dx.doi.org/10.1061/41127(382)392.

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Fredj, Abdelfettah, Aaron Dinovitzer, and Joe Zhou. "A 3-Dimensional Continuum ALE Model for Soil-Pipe Interaction." In 2008 7th International Pipeline Conference. ASMEDC, 2008. http://dx.doi.org/10.1115/ipc2008-64624.

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Soil-pipe interactions when large ground movements occur are an important consideration in pipeline design, route selection, guide monitoring and reduce the risk of damage or failure. Large ground movement can be caused by slope failures, faulting, landslides and seismic activities. Such conditions induce large deformations of both the soil and pipe. Analyses of such behavior pose a significant challenge to capabilities of standard finite elements as the capability to analyze large deformations is required. This requirement is difficult to meet for Lagrangian-based code. New developments using
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Voycheck, Carrie A., Daniel P. Browe, Patrick J. McMahon, and Richard E. Debski. "Changes in Capsule Function Following Anterior Dislocation Elucidate the Need for Standardized Clinical Exams to Diagnose Shoulder Instability." In ASME 2011 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2011. http://dx.doi.org/10.1115/sbc2011-53831.

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The anteroinferior glenohumeral capsule (anterior band of the inferior glenohumeral ligament (AB-IGHL), axillary pouch) limits anterior translation, particularly in positions of external rotation, and as a result is frequently injured during anterior dislocation. [1,2] A common capsular injury is permanent tissue deformation, however, the extent and effects of this injury are difficult to evaluate as the deformation cannot be seen using diagnostic imaging. In addition, clinical exams to diagnose this injury are not reliable [3] and poor patient outcome still exists following repair procedures.
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Daley, Claude, and Hyunwook Kim. "Ice Collision Forces Considering Structural Deformation." In ASME 2010 29th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2010. http://dx.doi.org/10.1115/omae2010-20657.

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With increasing interest in resource exploitation and shipping in the Arctic, the focus on ice class ships and offshore structures is growing every year. In Arctic waters collision with ice is a major concern. The standard analytical ship-ice collision load model is based on the assumption that the ship structure is perfectly rigid body and the crushing energy of ice is equated to the available kinetic energy to calculate the ice load. This paper extends the standard approach by including the local plastic deformation. By considering the plastic work done to the structure in the balance of ene
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Trabia, Mohamed B. "A Continuous Force Model for Elastic-Plastic Impact of Solids." In ASME 1993 Design Technical Conferences. American Society of Mechanical Engineers, 1993. http://dx.doi.org/10.1115/detc1993-0360.

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Abstract A model for elastic-plastic impact analysis of solids is presented. This model is valid for the cases when plasticity accounts for the absorption of energy during impact. It is assumed that impact forces follow continuous Hertz contact force model. The model depends on a new mechanism for energy absorption in the impacted solids. The method yields the relative velocity of impact needed to initiate permanent deformation, coefficient of restitution, and impact time. As an example, impact between spheres is considered. Comparison between analytical and experimental results is included.
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Ertas, Ahmet H., Betty J. Sindelar, and John R. Cotton. "Creep Simulation of a Micro-CT Based Finite Element Model of Porcine Cancellous Bone." In ASME 2011 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2011. http://dx.doi.org/10.1115/sbc2011-53320.

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Creep and fatigue behavior of cancellous bone are thought to be important in senile fractures [1, 2], bone remodeling [3], and implant subsidence [4]. Mechanical tests of cancellous bone samples have explored permanent deformation over time in both creep and fatigue loading. For example, Bowman, et al. [1] investigated creep behavior of bovine trabecular bone showing strong relationships between the applied stress and both time-to-failure and steady-state creep rate.
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Shivaswamy, Shashishekar, Jianmin Li, and Hamid M. Lankarani. "Impact Analysis of Plates Using Quasi-Static Approach." In ASME 1994 Design Technical Conferences collocated with the ASME 1994 International Computers in Engineering Conference and Exhibition and the ASME 1994 8th Annual Database Symposium. American Society of Mechanical Engineers, 1994. http://dx.doi.org/10.1115/detc1994-0089.

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Abstract Impact calculations suffer from several practical limitations which limit their application to establishing the approximate magnitude of the various phenomena involved. The transient force deformation response of a body subjected to impact can be explained accurately using stress wave propagation theory. As this approach is very complicated, a simpler quasi-static approach with non-linear force deformation Hertz relations can be employed for impact analysis. However, these relations can not explain the energy absorption and permanent deformations encountered during the impact. This ne
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Ghaderi, Aref, Vahid Morovati, Amir Bahrololoumi, and Roozbeh Dargazany. "A Physics-Informed Neural Network Constitutive Model for Cross-Linked Polymers." In ASME 2020 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/imece2020-24227.

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Abstract The behavior of Cross-linked Polymers in finite deformations is often characterized by nonlinear behaviour. In this paper, we propose to embed an artificial neural network (ANN) within a micro-mechanical platform and thus to enforce certain physical restrictions of an amorphous network such as directional dependency and history-dependency of the constitutive behavior of rubber-like materials during loading and unloading. Accordingly, a strain energy density function is assumed for a set of chains in each direction based on ANN and trained with experimental data set. Summation of the e
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Liu, Xiaoben, Hong Zhang, Mengying Xia, Jianping Liu, and Qian Zheng. "An Improved Analytical Strain Analysis Method for Buried Steel Pipelines Subjected to Abrupt Permanent Ground Displacement." In 2020 13th International Pipeline Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/ipc2020-9341.

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Abstract Abrupt permanent ground displacement is a typical loading condition for pipelines crossing geotechnical hazard areas. An improved analytical method for calculating longitudinal strain of buried pipeline under tension combined with bending load induced by permanent ground displacement (PGD) was proposed, in which, the pipe steel was considered as a bilinear material and the soil constraint on pipe was considered as a series of elastic-plastic nonlinear soil springs. Effects of elastic deformation of axial soil springs on pipe strain was derived accurately. Effects of axial force in pip
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ALAHMED, NOORA, KAMRAN KHAN, and REHAN UMER. "RATE-DEPENDENT COMPACTION AND RELAXATION RESPONSE OF UNCURED PREPREGS UNDER HIGH-PRESSURE CONDITIONS." In Thirty-sixth Technical Conference. Destech Publications, Inc., 2021. http://dx.doi.org/10.12783/asc36/35950.

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The compaction-relaxation response at different compaction rates and fiber volume fractions plays a key role in understanding the viscoelastic response of uncured prepregs. Hence, this study characterizes the time-dependent behavior of un-cured 4- layer prepregs subjected to compaction-stress relaxation test at different displacement rates i.e., 0.1 mm/min, 1.0 mm/min, and 10 mm/min, at 0.65 fiber volume fraction and allowed to relax for two hours. In this study, the complete deformation history of the Hexply M26T multilayer prepregs is measured from a stress-free state to the cured state. The
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Reports on the topic "Permanent deformation model"

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Nantung, Tommy E., Jusang Lee, John E. Haddock, et al. Structural Evaluation of Full-Depth Flexible Pavement Using APT. Purdue University, 2021. http://dx.doi.org/10.5703/1288284317319.

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The fundamentals of rutting behavior for thin full-depth flexible pavements (i.e., asphalt thickness less than 12 inches) are investigated in this study. The scope incorporates an experimental study using full-scale Accelerated Pavement Tests (APTs) to monitor the evolution of each pavement structural layer's transverse profiles. The findings were then employed to verify the local rutting model coefficients used in the current pavement design method, the Mechanistic-Empirical Pavement Design Guide (MEPDG). Four APT sections were constructed using two thin typical pavement structures (seven-and
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Ramakrishnan, Aravind, Ashraf Alrajhi, Egemen Okte, Hasan Ozer, and Imad Al-Qadi. Truck-Platooning Impacts on Flexible Pavements: Experimental and Mechanistic Approaches. Illinois Center for Transportation, 2021. http://dx.doi.org/10.36501/0197-9191/21-038.

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Truck platoons are expected to improve safety and reduce fuel consumption. However, their use is projected to accelerate pavement damage due to channelized-load application (lack of wander) and potentially reduced duration between truck-loading applications (reduced rest period). The effect of wander on pavement damage is well documented, while relatively few studies are available on the effect of rest period on pavement permanent deformation. Therefore, the main objective of this study was to quantify the impact of rest period theoretically, using a numerical method, and experimentally, using
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Al-Qadi, Imad, Jaime Hernandez, Angeli Jayme, et al. The Impact of Wide-Base Tires on Pavement—A National Study. Illinois Center for Transportation, 2021. http://dx.doi.org/10.36501/0197-9191/21-035.

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Researchers have been studying wide-base tires for over two decades, but no evidence has been provided regarding the net benefit of this tire technology. In this study, a comprehensive approach is used to compare new-generation wide-base tires (NG-WBT) with the dual-tire assembly (DTA). Numerical modeling, prediction methods, experimental measurements, and environmental impact assessment were combined to provide recommendations about the use of NG-WBT. A finite element approach, considering variables usually omitted in the conventional analysis of flexible pavement was utilized for modeling. F
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