Results 21 to 30 of about 1,564 (161)
Discovering plasticity models without stress data
npj Computational Materials, 2022 We propose an approach for data-driven automated discovery of material laws, which we call EUCLID (Efficient Unsupervised Constitutive Law Identification and Discovery), and we apply it here to the discovery of plasticity models, including arbitrarily ...
Moritz Flaschel +2 more
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Determination of Kinematic Hardening Parameters in W-Temper Forming of 6082 Aluminum Alloy [PDF]
MATEC Web of ConferencesThis study investigates the kinematic hardening behavior of 6082 aluminum alloy during W-temper forming, with a particular focus on the influence of transition time following W-temper heat treatment on key kinematic hardening parameters.
Dessie Jemal Ebrahim +2 more
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Wellposedness of kinematic hardening models in elastoplasticity [PDF]
ESAIM: Mathematical Modelling and Numerical Analysis, 1998 Summary: We consider a certain type of rate-independent elastoplastic constitutive laws for nonlinear kinematic hardening which include the models of Frederick-Armstrong, Bower and Mróz. We prove results concerning existence, uniqueness and continuous dependence for the stress-strain evolution considered as a function of time (but not of space).
Brokate, Martin, Krejčí, Pavel
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Nihon Kikai Gakkai ronbunshu, 2016 This paper presents a re-formulation of the extended subloading surface model within the ‘unconventional plasticity’ concept applicable to cyclic loadings. The small strain theory is adopted in the model formulation.
Takuya IGUCHI +2 more
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A Design Optimization Study for the Die Dimensioning Using the Locking Nut Folding Simulation
Journal of Mechanical Engineering, 2021 An inverse analysis based on optimization process is performed to determine die curvatures for a locking nut’s flange folding process which has highly nonlinear material behaviour. The nut material is AISI C1040 steel.
Ülüver Bozkurt, İlyas Kacar
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Metals, 2019 A fundamental prerequisite for the micromechanical simulation of fatigue is the appropriate modelling of the effective cyclic properties of the considered material.
Benjamin J. Schäfer +4 more
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Advances in Mechanical Engineering, 2018 In this article, a numerical model for predicting spring-back in U-draw bending of DP350 high-strength steel sheet was presented. First, the hardening models were formulated based on combined isotropic–kinematic hardening laws, along with the traditional
Van-Canh Tong, Duc-Toan Nguyen
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A Study on the Effect of Restriking Process for the Stampings of HSS Sheet [PDF]
한국정밀공학회지, 2018 Recently the application of high strength steel sheets, such as DP, TRIP, and TWIP, is rapidly increasing in the automotive industry. Despite this trend, springback is still one of major obstacles that has yet to be overcome.
Rongzhen Zheng, Hyun Bo Shim
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Mechanical Engineering JournalLaser cladding (LC) is an advantageous surface modification technique. However, in the case of a thin substrate or a large process area to substrate, large thermal distortions could be generated, which can affect the dimensional accuracy of machinery ...
Taisei IZUMI, Ayumu YANO, Masayuki ARAI
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High Temperature Mechanical Constitutive Modeling of a High-Nb TiAl Alloy
Journal of Aeronautical Materials, 2018 Uniaxial tensile, low cycle fatigue, fatigue-creep interaction and creep experiments of a novel high-Nb TiAl alloy (i.e. Ti-45Al-8Nb-0.2W-0.2B-0.02Y (atom fraction/%)) were conducted at 750℃ to obtain its tested data and curves.
DONG Chengli +4 more
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