Elastic-plastic-creep-large strain analysis at elevated temperature by the finite element method

Haisler, W. E.; Sanders, D. R.

doi:10.1016/0045-7949(79)90108-1

Cited by 6 publications

(5 citation statements)

References 18 publications

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“…Here, the conventional model adopted is essentially the generalized Voigt type ( Figure 7). Extensive references for modeling creep behavior are provided in reviews by Haisler and Sanders [45], Zienkiewicz [130] and Owen Therefore, the stress-strain law for the viscoelastic creep can be written in the form of standard elastic equations replacing the elastic compliance 1/E by the integral operators defined by replaced by…”

Section: Modeling Of Cribp Behaviormentioning

confidence: 99%

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Computational method for thermoviscoelasticity with application to rock mechanics. [Ph. D. Thesis]

Lee¹

1984

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Section: Modeling Of Cribp Behaviormentioning

confidence: 99%

“…media have been represented by several forms of viscoelastic constitutive laws classified as differential, integral, and empirical (cf. ~ef [45,90,130,132)…”

mentioning

confidence: 99%

Computational method for thermoviscoelasticity with application to rock mechanics. [Ph. D. Thesis]

Lee¹

1984

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“…In this computational model coupled with HTHP and creep, we propose to use multiphysics coupling FEM to calculate casing remaining strength [14][15][16][17], total strain increment is calculated as follows:…”

Section: Multi-physics Coupling Field Modelmentioning

confidence: 99%

Application of Multiphysics Coupling FEM on Open Wellbore Shrinkage and Casing Remaining Strength in an Incomplete Borehole in Deep Salt Formation

Tong

Guo

Zhu

2015

Mathematical Problems in Engineering

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Drilling and completing wells in deep salt stratum are technically challenging and costing, as when serving in an incomplete borehole in deep salt formation, well casing runs a high risk of collapse. To quantitatively calculate casing remaining strength under this harsh condition, a three-dimensional mechanical model is developed; then a computational model coupled with interbed salt rock-defective cement-casing and HPHT (high pressure and high temperature) is established and analyzed using multiphysics coupling FEM (finite element method); furthermore, open wellbore shrinkage and casing remaining strength under varying differential conditions in deep salt formation are discussed. The result demonstrates that the most serious shrinkage occurs at the middle of salt rock, and the combination action of salt rock creep, cement defect, and HPHT substantially lessens casing remaining strength; meanwhile, cement defect level should be taken into consideration when designing casing strength in deep salt formation, and apart from the consideration of temperature on casing the effect of temperature on cement properties also cannot be ignored. This study not only provides a theoretical basis for revealing the failure mechanism of well casing in deep complicated salt formation, but also acts as a new perspective of novel engineering applications of the multiphysics coupling FEM.

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“…Thermo-elastoplastic-creep analysis procedure has been developed by many researchers [4,6,[9][10][11][12]. Most of them adopted Green-Lagrange or Almansi strain measures adequate for smallmedium strain.…”

Section: Thermo-elasto-plastic-creep Analysismentioning

confidence: 99%

A Critical Heat Generation for Safe Nuclear Fuels after a LOCA

Kim

Kim²,

Cho

et al. 2014

Science and Technology of Nuclear Installations

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This study applies a thermo-elasto-plastic-creep finite element procedure to the analysis of an accidental behavior of nuclear fuel as well as normal behavior. The result will be used as basic data for the robust design of nuclear power plant and fuels. We extended the range of mechanical strain from small or medium to large adopting the Hencky logarithmic strain measure in addition to the Green-Lagrange strain and Almansi strain measures, for the possible large strain situation in accidental environments. We found that there is a critical heat generation after LOCA without ECCS (event category 5), under which the cladding of fuel sustains the internal pressure and temperature for the time being for the rescue of the power plant. With the heat generation above the critical value caused by malfunctioning of the control rods, the stiffness of cladding becomes zero due to the softening by high temperature. The weak position of cladding along the length continuously bulges radially to burst and to discharge radioactive substances. This kind of cases should be avoid by any means.

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Elastic-plastic-creep-large strain analysis at elevated temperature by the finite element method

Cited by 6 publications

References 18 publications

Computational method for thermoviscoelasticity with application to rock mechanics. [Ph. D. Thesis]

Computational method for thermoviscoelasticity with application to rock mechanics. [Ph. D. Thesis]

Application of Multiphysics Coupling FEM on Open Wellbore Shrinkage and Casing Remaining Strength in an Incomplete Borehole in Deep Salt Formation

A Critical Heat Generation for Safe Nuclear Fuels after a LOCA

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