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Journal articles on the topic 'Backstress'

Author: Grafiati

Published: 30 November 2024

Last updated: 31 July 2025

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1

Servatan, M., S. M. Hashemi, and A. Varvani-Farahani. "Ratcheting Simulation of Additively Manufactured Aluminum 4043 Samples through Finite Element Analysis." Applied Sciences 13, no. 20 (2023): 11553. http://dx.doi.org/10.3390/app132011553.

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This study presents a finite element-based ratcheting assessment of additively manufactured aluminum 4043 samples undergoing asymmetric loading cycles. The Chaboche material model in ANSYS was utilized and the effects of mesh and element type were examined. Different element numbers were used in a thorough convergence study to obtain independent meshing structures. The coefficients of this model were defined through stress–strain hysteresis loops determined from the strain-controlled tests. The backstress evolution and the corresponding yield surface translation in the deviatoric stress space

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2

McDowell, D. L. "A Bounding Surface Theory for Cyclic Thermoplasticity." Journal of Engineering Materials and Technology 114, no. 3 (1992): 297–303. http://dx.doi.org/10.1115/1.2904176.

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A nonisothermal, rate and time independent generalization of nonlinear kinematic hardening theory for cyclic plasticity is introduced. The model includes decomposition of backstress and of isotropic hardening between the yield surface radius and the backstress amplitude. A purely temperature dependent component of yield surface radius is assumed in addition to an isotropic hardening component. Issues of thermoplastic material stability and temperature history independence are clearly distinguished and addressed via implications of temperature rate terms. Correlations are reported for OFHC copp

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3

Kassner, M. E., P. Geantil, L. E. Levine, and B. C. Larson. "Backstress, the Bauschinger Effect and Cyclic Deformation." Materials Science Forum 604-605 (October 2008): 39–51. http://dx.doi.org/10.4028/www.scientific.net/msf.604-605.39.

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Backstresses or long range internal stresses (LRIS) in the past have been suggested by many to exist in plastically deformed crystalline materials. Elevated stresses can be present in regions of elevated dislocation density or dislocation heterogeneities in the deformed microstructures. The heterogeneities include edge dislocation dipole bundles (veins) and the edge dipole walls of persistent slip bands (PSBs) in cyclically deformed materials and cell and subgrain walls in monotonically deformed materials. The existence of long range internal stress is especially important for the understandin

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4

Borstad, C. P., E. Rignot, J. Mouginot, and M. P. Schodlok. "Creep deformation and buttressing capacity of damaged ice shelves: theory and application to Larsen C ice shelf." Cryosphere Discussions 7, no. 4 (2013): 3567–610. http://dx.doi.org/10.5194/tcd-7-3567-2013.

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Abstract. Around the perimeter of Antarctica, much of the ice sheet discharges to the ocean through floating ice shelves. The buttressing provided by ice shelves is critical for modulating the flux of ice into the ocean, and the presently observed thinning of ice shelves is believed to be reducing their buttressing capacity and contributing to the acceleration and thinning of the grounded ice sheet. However, relatively little attention has been paid to the role that fractures play in the flow and stability of ice shelves and their capacity to buttress the flow of grounded ice. Here, we develop

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5

Benn, Douglas I., Adrian Luckman, Jan A. Åström, et al. "Rapid fragmentation of Thwaites Eastern Ice Shelf." Cryosphere 16, no. 6 (2022): 2545–64. http://dx.doi.org/10.5194/tc-16-2545-2022.

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Abstract. Ice shelves play a key role in the dynamics of marine ice sheets by buttressing grounded ice and limiting rates of ice flux to the oceans. In response to recent climatic and oceanic change, ice shelves fringing the West Antarctic Ice Sheet (WAIS) have begun to fragment and retreat, with major implications for ice-sheet stability. Here, we focus on the Thwaites Eastern Ice Shelf (TEIS), the remaining pinned floating extension of Thwaites Glacier. We show that TEIS has undergone a process of fragmentation in the last 5 years, including brittle failure along a major shear zone, formatio

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6

Wolff, M., M. Böhm, M. Dalgic, G. Löwisch, N. Lysenko, and J. Rath. "Parameter identification for a TRIP model with backstress." Computational Materials Science 37, no. 1-2 (2006): 37–41. http://dx.doi.org/10.1016/j.commatsci.2005.12.007.

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7

Voyiadjis, G. Z., and P. I. Kattan. "Phenomenological evolution equations for the backstress and spin tensors." Acta Mechanica 88, no. 1-2 (1991): 91–111. http://dx.doi.org/10.1007/bf01170595.

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8

Foga, Steve, Leigh A. Stearns, and C. J. van der Veen. "Application of Satellite Remote Sensing Techniques to Quantify Terminus and Ice Mélange Behavior at Helheim Glacier, East Greenland." Marine Technology Society Journal 48, no. 5 (2014): 81–91. http://dx.doi.org/10.4031/mtsj.48.5.3.

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AbstractIceberg calving is an efficient mechanism for ice mass loss, and rapidly calving glaciers are often considered to be inherently unstable. However, the physical controls on calving are not well understood. Recent studies hypothesize that the presence of a rigid ice mélange (composed of icebergs, bergy bits, and sea ice) can reduce iceberg calving by providing “backstress” to the terminus. To test this hypothesis we use remote sensing techniques to construct a time series model of calving rate and size and composition of the adjacent ice mélange. We describe a semi-automated routine for

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9

Wierzba, Bartek, Tsutomu Mashimo, and Marek Danielewski. "Competition between Chemical and Gravity Forces in Binary Alloys." High Temperature Materials and Processes 37, no. 3 (2018): 285–88. http://dx.doi.org/10.1515/htmp-2016-0194.

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AbstractWe present the first experimental results of the growth of Cu6Sn5 and Cu3Sn under an external force field – during the sedimentation process. The results are compared with the proposed model under the combined influence of the Kirkendall effect, backstress and sedimentation. It is shown that Cu3Sn consumes the preformed Cu6Sn5 phase during sedimentation under a strong gravitational field of 779,000 G at 200 °C.

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10

Brahme, Abhijit P., Kaan Inal, Raja K. Mishra, and S. Saimoto. "The backstress effect of evolving deformation boundaries in FCC polycrystals." International Journal of Plasticity 27, no. 8 (2011): 1252–66. http://dx.doi.org/10.1016/j.ijplas.2011.02.006.

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11

Wierzba, Bartek. "Void Formation during Diffusion – Two-Dimensional Approach." High Temperature Materials and Processes 35, no. 6 (2016): 629–33. http://dx.doi.org/10.1515/htmp-2015-0049.

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AbstractThe final set of equations defining the interdiffusion process in solid state is presented. The model is supplemented by vacancy evolution equation. The competition between the Kirkendall shift, backstress effect and vacancy migration is considered. The proper diffusion flux based on the Nernst–Planck formula is proposed. As a result, the comparison of the experimental and calculated evolution of the void formation in the Fe-Pd diffusion couple is shown.

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12

Novikova, Elena V., Mariia A. Trimonova, Sergey B. Turuntaev, Evgeny V. Zenchenko, and Petr E. Zenchenko. "Backstress Influence on the Formation Stress Field in Hydraulic Fracturing Experiments." Geosciences 13, no. 6 (2023): 153. http://dx.doi.org/10.3390/geosciences13060153.

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This work presents an analysis of data obtained through unique laboratory experiments on hydraulic fracturing. In the experiments, sufficiently large artificial samples were used to model a reservoir. Thus, it was possible to simulate several wells simultaneously, given that hydraulic fracture was initiated in one of them. In addition, the setup construction provided a true triaxial stress–strain state. The setup allowed us to investigate parameters that are difficult to access in real conditions. The data processing based on six laboratory experiments on hydraulic fracturing showed discrepanc

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13

Yoshida, Fusahito, Hiroshi Hamasaki, and Takeshi Uemori. "Description of Closure of Cyclic Stress-Strain Loop and Ratcheting Based on Y-U Model." Key Engineering Materials 725 (December 2016): 351–56. http://dx.doi.org/10.4028/www.scientific.net/kem.725.351.

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This paper proposes a cyclic plasticity model to describe the closure of a cyclic stress-strain hysteresis loop based on the Y-U model. In this model, the backstress moves in a cyclic memory surface following a newly proposed kinematic hardening law. For this model just the same Y-U parameters can be used, and no additional material parameters are needed. By using a supplementary rule, this model is also able to describe ratcheting.

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14

Borstad, C. P., E. Rignot, J. Mouginot, and M. P. Schodlok. "Creep deformation and buttressing capacity of damaged ice shelves: theory and application to Larsen C ice shelf." Cryosphere 7, no. 6 (2013): 1931–47. http://dx.doi.org/10.5194/tc-7-1931-2013.

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Abstract. Around the perimeter of Antarctica, much of the ice sheet discharges to the ocean through floating ice shelves. The buttressing provided by ice shelves is critical for modulating the flux of ice into the ocean, and the presently observed thinning of ice shelves is believed to be reducing their buttressing capacity and contributing to the acceleration and thinning of the grounded ice sheet. However, relatively little attention has been paid to the role that fractures play in the ability of ice shelves to sustain and transmit buttressing stresses. Here, we present a new framework for q

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15

UEMORI, TAKESHI, YUJI MITO, SATOSHI SUMIKAWA, RYUTARO HINO, FUSAHITO YOSHIDA, and TETSUO NAKA. "PLASTIC DEFORMATION BEHAVIOR OF HIGH STRENGTH STEEL SHEET UNDER NON-PROPORTIONAL LOADING AND ITS MODELING." International Journal of Modern Physics B 22, no. 31n32 (2008): 5394–99. http://dx.doi.org/10.1142/s0217979208050553.

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This paper deals with plastic deformations of a high tensile strength steel sheet (HTSS sheet) under biaxial stress condition including strain path. Using a cruciform specimen of a HTSS sheet of 780MPa-TS, experiments under proportional and non-proportional loadings were investigated. Numerical simulations of stress-strain responses for several strain paths after biaxial stretching were conducted using a large-strain cyclic plasticity model (Yoshida-Uemori model). The results of numerical simulation agrees well the corresponding experimental results, which is attributed to the accurate modelin

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16

Gusak, A., B. Wierzba, and M. Danielewski. "Competition between Kirkendall shift and backstress in interdiffusion revisited – simple analytic model." Philosophical Magazine 94, no. 10 (2014): 1153–65. http://dx.doi.org/10.1080/14786435.2013.878053.

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17

Uemori, Takeshi, T. Kuramitsu, Ryutaro Hino, Tetsuo Naka, and Fusahito Yoshida. "Plastic Deformation Behavior of High Strength Steel Sheet under Non-Proportional Loading and its Modeling." Key Engineering Materials 340-341 (June 2007): 895–900. http://dx.doi.org/10.4028/www.scientific.net/kem.340-341.895.

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This paper deals with experimental observations and modeling of plastic deformations of a high strength steel sheet (HSS sheet) under biaxial stress conditions. Using a cruciform specimen of a HSS sheet of 980MPa-TS, experiments of proportional and non-proportional loadings were performed. Numerical simulations for the biaxial stress-strain responses were conducted using a constitutive model of large-strain cyclic plasticity (Yoshida-Uemori model), and the results were compared to the experimental data. The results of numerical simulation show a good agreement with the experimental results, wh

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18

MAYAMA, Tsuyoshi, Katsuhiko SASAKI, and Hiromasa ISHIKAWA. "Simulation of Biaxial Ratchetting Using the Unified Constitutive Model Considering Memorization of Backstress." Transactions of the Japan Society of Mechanical Engineers Series A 68, no. 675 (2002): 1582–87. http://dx.doi.org/10.1299/kikaia.68.1582.

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19

Holzweissig, M. J., D. Canadinc, and H. J. Maier. "In situ characterization of backstress effects on the austenite-to-bainite phase transformation." Scripta Materialia 67, no. 4 (2012): 368–71. http://dx.doi.org/10.1016/j.scriptamat.2012.05.027.

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20

Liu, Lu, Yao Yao, Tao Zeng, and Leon M. Keer. "A micromechanical model considering dislocation density based intra-granular backstress under cyclic loading." Mechanics of Materials 129 (January 2019): 41–49. http://dx.doi.org/10.1016/j.mechmat.2018.10.011.

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21

Voyiadjis, G. "Thermodynamic based model for the evolution equation of the backstress in cyclic plasticity." International Journal of Plasticity 19, no. 12 (2003): 2121–47. http://dx.doi.org/10.1016/s0749-6419(03)00062-7.

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22

Stubstad, J. M., and G. J. Simitses. "Creep Analysis of Beams and Arches Based on a Hereditary Visco-Elastic-Plastic Constitutive Law." Journal of Engineering Materials and Technology 112, no. 2 (1990): 210–17. http://dx.doi.org/10.1115/1.2903309.

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An analytic study of planar beams and arches subjected to significant thermal cycling from ambient temperatures up to 800°C is presented. The study employs a recently unified nonlinear hereditary type of viscoelastoplastic constitutive law to characterize the time- and temperature-dependent properties of Hastelloy X, a typical aerospace alloy. The results demonstrate a strong interaction between the backstress variable of the constitutive law and the time-dependent stress distribution produced by the deformation. This interaction tends to control, in a highly nonlinear manner, the creep ratche

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23

Keller, Clement, Gael Marnier, Wilson Veloz, and Lakhdar Taleb. "Influence of the stacking fault energy and temperature on the prestrain memory effect of face centered cubic metal submitted to cyclic loadings." MATEC Web of Conferences 165 (2018): 06008. http://dx.doi.org/10.1051/matecconf/201816506008.

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In this paper, the effect of a monotonic prehardening in tension on the subsequent cyclic stress strain curves is investigated as a function of the deformation mechanisms. To this aim, three materials are employed, copper for wavy dislocation slip, Ni20Cr alloy for planar slip and AISI 316L for intermediate deformation mechanisms. Samples were first prestrained in tension and then submitted to incremental strain cyclic tests at room temperature, and also 200°C for the 316L. Based on the analysis of the flow stress components (backstress and effective stress), the results show that all material

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24

Li, Ling, Lu Ming Shen, and Gwénaëlle Proust. "Crystal Plasticity Simulation of the Bauschinger Effect of Polycrystalline AA7075 through a Texture-Based Representative Volume Element Model." Applied Mechanics and Materials 553 (May 2014): 22–27. http://dx.doi.org/10.4028/www.scientific.net/amm.553.22.

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A texture-based representative volume element (TBRVE) model is developed for the three-dimensional crystal plasticity (CP) finite element simulations of the Bauschinger effect (BE) of polycrystalline aluminium alloy 7075 (AA7075). In the simulations, the grain morphology is created using the Voronoi tessellation method with the material texture systematically discretised from experiment. A modified CP constitutive model, which takes into account the backstress, is used to simulate the BE during cyclic loading. The model parameters are calibrated using the first cycle stress-strain curve and us

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25

Aktaa, J. "Unified modelling of time dependent damage taking into account an explicit dependency on backstress." International Journal of Fatigue 19, no. 3 (1997): 195–200. http://dx.doi.org/10.1016/s0142-1123(97)83266-5.

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26

Yao, Hong, and Jian Cao. "Prediction of forming limit curves using an anisotropic yield function with prestrain induced backstress." International Journal of Plasticity 18, no. 8 (2002): 1013–38. http://dx.doi.org/10.1016/s0749-6419(01)00022-5.

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27

Kuroda, Mitsutoshi. "Interfacial microscopic boundary conditions associated with backstress-based higher-order gradient crystal plasticity theory." Journal of Mechanics of Materials and Structures 12, no. 2 (2017): 193–218. http://dx.doi.org/10.2140/jomms.2017.12.193.

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28

Luo, Yan. "A Cyclic Softening Plastic Model of Carbon Steel 45 under Uniaxial Cyclic Straining." Advanced Materials Research 343-344 (September 2011): 85–91. http://dx.doi.org/10.4028/www.scientific.net/amr.343-344.85.

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Based on the characteristic of cyclic softening of the quenched and tempered Carbon steel 45, a cyclic plastic constitutive model was proposed to describe the cyclic behavior under symmetrical and unsymmetrical strain cycling with different strain amplitudes. In this model, the phenomenon of the decrease of the up yield limit stress with the increase of strain in the initial 1/4 cycle was taken into account. The proposed evolution equations of the yield size and backstress can simulate the cycling softening under symmetrical and unsymmetrical strain cycling well. The results indicated that eit

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29

Venteris, E. R., I. M. Whillans, and C. J. Van der Veen. "Effect of extension rate on terminus position, Columbia Glacier, Alaska, U.S.A." Annals of Glaciology 24 (1997): 49–53. http://dx.doi.org/10.3189/s0260305500011927.

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The relations between seasonal changes in ice speed, longitudinal extension rate and terminus position are investigated for Columbia Glacier, Alaska, over the period 1977–87. The lower reach of the glacier is studied using repeat aerial photography, which extends from the terminus to the base of an icefall about 14 km up-glacier. There are regular seasonal cycles in speed and stretching rate. These cycles continue after the glacier retreats off the shoal at the end of the fjord (in about 1983), indicating that factors other than backstress, such as seasonal changes in subglacial water, control

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30

Venteris, E. R., I. M. Whillans, and C. J. Van der Veen. "Effect of extension rate on terminus position, Columbia Glacier, Alaska, U.S.A." Annals of Glaciology 24 (1997): 49–53. http://dx.doi.org/10.1017/s0260305500011927.

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The relations between seasonal changes in ice speed, longitudinal extension rate and terminus position are investigated for Columbia Glacier, Alaska, over the period 1977–87. The lower reach of the glacier is studied using repeat aerial photography, which extends from the terminus to the base of an icefall about 14 km up-glacier. There are regular seasonal cycles in speed and stretching rate. These cycles continue after the glacier retreats off the shoal at the end of the fjord (in about 1983), indicating that factors other than backstress, such as seasonal changes in subglacial water, control

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31

Paolo, Fernando S., Alex S. Gardner, Chad A. Greene, et al. "Widespread slowdown in thinning rates of West Antarctic ice shelves." Cryosphere 17, no. 8 (2023): 3409–33. http://dx.doi.org/10.5194/tc-17-3409-2023.

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Abstract. Antarctica's floating ice shelves modulate discharge of grounded ice into the ocean by providing a backstress. Ice shelf thinning and grounding line retreat have reduced this backstress, driving rapid drawdown of key unstable areas of the Antarctic Ice Sheet, leading to sea-level rise. If ice shelf loss continues, it may initiate irreversible glacier retreat through the marine ice sheet instability. Identification of areas undergoing significant change requires knowledge of spatial and temporal patterns in recent ice shelf loss. We used 26 years (1992–2017) of satellite-derived Antar

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32

Gusak, Andriy, Nadiya Storozhuk, and King Ning Tu. "Models of Interdiffusion in a Polycrystalline Alloy: Kirkendall Effect versus Non-Equilibrium Vacancies and Backstress." Defect and Diffusion Forum 309-310 (March 2011): 135–42. http://dx.doi.org/10.4028/www.scientific.net/ddf.309-310.135.

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In order to study evolution of the concentration profiles and markers velocities in various time and space scales quasi-one-dimensional model of interdiffusion in a polycrystalline alloy is proposed considering non-equilibrium vacancies and the Kirkendall effect. Sinks/sources of vacancies are assumed to be concentrated mainly at the moving grain boundaries. This model simultaneously takes into account the movement of grains and changes of grain sizes.

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33

Gusak, A., B. Wierzba, and M. Danielewski. "Electromigration revisited: competition between Kirkendall shift and backstress in pure metals and two-phase alloys." Philosophical Magazine 95, no. 10 (2015): 1093–104. http://dx.doi.org/10.1080/14786435.2015.1020352.

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34

Fischlschweiger, Michael, Georges Cailletaud, and Thomas Antretter. "A mean-field model for transformation induced plasticity including backstress effects for non-proportional loadings." International Journal of Plasticity 37 (October 2012): 53–71. http://dx.doi.org/10.1016/j.ijplas.2012.04.001.

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35

Altenbach, Holm, Dmitry Breslavsky, Konstantin Naumenko, and Oksana Tatarinova. "Two-time-scales and time-averaging approaches for the analysis of cyclic creep based on Armstrong–Frederick type constitutive model." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 233, no. 5 (2018): 1690–700. http://dx.doi.org/10.1177/0954406218772609.

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The aim of this paper is the analysis of inelastic behavior under periodic cyclic loading regimes for materials showing recovery effects. Starting with the Armstrong–Frederick type model and applying the two-time-scale asymptotic technique, the constitutive equation for the mean inelastic strain rate and the evolution equation for the mean backstress variable are derived. The advantage of the presented technique is the closed analytical form of the solutions such that the influence of the loading profiles on the resulting slow cycle-by-cycle strain accumulation can be analyzed explicitly. To v

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36

Hatami, Faezeh, and Ahmad Varvani-Farahani. "Accumulation of Plastic Strain at Notch Root of Steel Specimens Undergoing Asymmetric Fatigue Cycles: Analysis and Simulation." Materials 16, no. 6 (2023): 2153. http://dx.doi.org/10.3390/ma16062153.

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The present study evaluates the ratcheting response at notch roots of 1045 steel specimens experiencing uniaxial asymmetric fatigue cycles. Local stress and strain components at the notch root were analytically evaluated through the use of Neuber, Glinka, and Hoffman-Seeger (H-S) rules coupled with the Ahmadzadeh-Varvani (A-V) kinematic hardening model. Backstress promotion through coupled kinematic hardening model with the Hoffman-Seeger, Neuber, and Glinka rules was studied. Relaxation in local stresses on the notched samples as hysteresis loops moved forward with plastic strain accumulation

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37

Hsu, Jen-Che, and Kwang-Lung Lin. "Effect of internal stress on elemental diffusion and crystallization of electroless Ni–Cu–P deposit on Al." Journal of Materials Research 18, no. 9 (2003): 2221–27. http://dx.doi.org/10.1557/jmr.2003.0310.

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The type and magnitude of stress in electroless Ni–Cu–P deposits on Al were manipulated by controlling the concentration of saccharin in the plating solution. Tensile, zero, and compressive stress of the electroless Ni–Cu–P deposits was obtained with 0, 8, and 10 g/l saccharin for studying the effect of stress on the diffusion and crystallization behavior of the deposit. The effect of stress on the diffusion behavior of Cu, Ni, and Al elements during annealing was investigated. Interdiffusion between Al and Ni in an amorphous Ni–Cu–P/crystal Al diffusion couple is abated by the effects of amor

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38

Jiang, Maoyuan, and Benoit Devincre. "Uncovering the existence of anti-backstress associated with dislocations accumulated at grain boundaries during plastic deformation." Computational Materials Science 208 (June 2022): 111328. http://dx.doi.org/10.1016/j.commatsci.2022.111328.

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39

Koo, Sungyong, Jungmoo Han, Karuppasamy Pandian Marimuthu, and Hyungyil Lee. "Determination of Chaboche combined hardening parameters with dual backstress for ratcheting evaluation of AISI 52100 bearing steel." International Journal of Fatigue 122 (May 2019): 152–63. http://dx.doi.org/10.1016/j.ijfatigue.2019.01.009.

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40

Li, Ling, Lu Ming Shen, and Gwénaëlle Proust. "Crystal Plasticity Finite Element Simulations of Polycrystalline Aluminium Alloy under Cyclic Loading." Advanced Materials Research 891-892 (March 2014): 1609–14. http://dx.doi.org/10.4028/www.scientific.net/amr.891-892.1609.

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A three-dimensional crystal plasticity (CP) finite element model is developed to reproduce the grain level stress concentration and deformation of polycrystalline aluminium alloy 7075 (AA7075) during fatigue experiments. The grains contained in the model possess the same size and crystallographic orientations obtained from electron back-scatter diffraction experiments. A modified CP constitutive model, which considers the backstress evolution, is employed to describe the mechanical behaviour of AA7075 under cyclic loading. A round-notched specimen from a fatigue test is simulated using the pro

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41

ÇAYLAK, Melih, Toros Arda AKŞEN, and Mehmet FIRAT. "Evaluating the effectiveness of combined hardening models to determine the behavior of a plate with a hole under combined loadings." European Mechanical Science 6, no. 2 (2022): 97–104. http://dx.doi.org/10.26701/ems.1051057.

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Geometrical discontinuities in a material such as holes and notches on machine elements are called as critical regions due to the stress concentrations. They are the potential failure initiation locations Therefore, researchers put significant effort on the prediction of the material response in these discontinuities under repetitive loadings.  Cyclic plasticity is concerned with the nonlinear material response under cyclic loadings. In this study, numerical cyclic stress – strain response of a plate with a hole was evaluated under the combined loadings which are cyclic bending and tensi

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42

ROYSTON, SAM, and G. HILMAR GUDMUNDSSON. "Changes in ice-shelf buttressing following the collapse of Larsen A Ice Shelf, Antarctica, and the resulting impact on tributaries." Journal of Glaciology 62, no. 235 (2016): 905–11. http://dx.doi.org/10.1017/jog.2016.77.

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ABSTRACTThe dominant mass-loss process on the Antarctic Peninsula has been ice-shelf collapse, including the Larsen A Ice Shelf in early 1995. Following this collapse, there was rapid speed up and thinning of its tributary glaciers. We model the impact of this ice-shelf collapse on upstream tributaries, and compare with observations using new datasets of surface velocity and ice thickness. Using a two-horizontal-dimension shallow shelf approximation model, we are able to replicate the observed large increase in surface velocity that occurred within Drygalski Glacier, Antarctic Peninsula. The m

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43

Schouwenaars, R., V. H. Jacobo, and A. Ortiz. "Multiple dislocation pile-ups in small grains at small strains: implications for the Hall-Petch relationship and backstress screening." IOP Conference Series: Materials Science and Engineering 63 (August 8, 2014): 012132. http://dx.doi.org/10.1088/1757-899x/63/1/012132.

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44

Bandyopadhyay, Ritwik, Sven E. Gustafson, Kartik Kapoor, Diwakar Naragani, Darren C. Pagan, and Michael D. Sangid. "Comparative assessment of backstress models using high-energy X-ray diffraction microscopy experiments and crystal plasticity finite element simulations." International Journal of Plasticity 136 (January 2021): 102887. http://dx.doi.org/10.1016/j.ijplas.2020.102887.

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Wolff, M., M. Böhm, M. Dalgic, G. Löwisch, and J. Rath. "Validation of a TP model with backstress for the pearlitic transformation of the steel 100Cr6 under step-wise loads." Computational Materials Science 39, no. 1 (2007): 49–54. http://dx.doi.org/10.1016/j.commatsci.2006.01.025.

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Adamec, Tomáš, Tasnim Hassan, Josef Zapletal, Sudhir Kumar Kondepati, and František Šebek. "Backstress shift modelling concept for improving uniaxial ratcheting predictions for wrought 304 stainless steel and additively manufactured Inconel 718." European Journal of Mechanics - A/Solids 114 (November 2025): 105770. https://doi.org/10.1016/j.euromechsol.2025.105770.

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Cook, S., I. C. Rutt, T. Murray, et al. "Modelling environmental influences on calving at Helheim Glacier in eastern Greenland." Cryosphere 8, no. 3 (2014): 827–41. http://dx.doi.org/10.5194/tc-8-827-2014.

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Abstract. Calving is an important mass-loss process for many glaciers worldwide, and has been assumed to respond to a variety of environmental influences. We present a grounded, flowline tidewater glacier model using a physically-based calving mechanism, applied to Helheim Glacier, eastern Greenland. By qualitatively examining both modelled size and frequency of calving events, and the subsequent dynamic response, the model is found to realistically reproduce key aspects of observed calving behaviour. Experiments explore four environmental variables which have been suggested to affect calving

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Suchocki, Cyprian. "On finite element implementation of cyclic elastoplasticity: theory, coding, and exemplary problems." Acta Mechanica 233, no. 1 (2021): 83–120. http://dx.doi.org/10.1007/s00707-021-03069-3.

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AbstractIn this work the finite element (FE) implementation of the small strain cyclic plasticity is discussed. The family of elastoplastic constitutive models is considered which uses the mixed, kinematic-isotropic hardening rule. It is assumed that the kinematic hardening is governed by the Armstrong–Frederick law. The radial return mapping algorithm is utilized to discretize the general form of the constitutive equation. A relation for the consistent elastoplastic tangent operator is derived. To the best of the author’s knowledge, this formula has not been presented in the literature yet. T

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Cook, S., I. C. Rutt, T. Murray, et al. "Modelling environmental influences on calving at Helheim Glacier, East Greenland." Cryosphere Discussions 7, no. 5 (2013): 4407–42. http://dx.doi.org/10.5194/tcd-7-4407-2013.

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Abstract. Calving is an important mass-loss process for many glaciers worldwide, and has been assumed to respond to a variety of environmental influences. We present a grounded, flowline tidewater glacier model, using a physically realistic calving mechanism, which is applied to Helheim Glacier, East Greenland. By qualitatively examining both modelled size and frequency of calving events, and the subsequent dynamic response, the model is found to produce a realistic representation of calving behaviour. Experiments use four environmental variables which have been suggested to affect calving rat

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Natesan, Elanghovan, Stefan Eriksson, Johan Ahlström, and Christer Persson. "Effect of Temperature on Deformation and Fatigue Behaviour of A356–T7 Cast Aluminium Alloys Used in High Specific Power IC Engine Cylinder Heads." Materials 13, no. 5 (2020): 1202. http://dx.doi.org/10.3390/ma13051202.

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Aggressive downsizing of the internal combustion engines used as part of electrified powertrains in recent years have resulted in increasing thermal loads on the cylinder heads and consequently, the susceptibility to premature thermo-mechanical fatigue failures. To enable a reliable computer aided engineering (CAE) prediction of the component lives, we need more reliable material deformation and fatigue performance data. Material for testing was extracted from the highly loaded valve bridge area of specially cast cylinder heads to study the monotonic and cyclic deformation behaviour of the A35

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