Development of a finite element based strain accumulation model for the prediction of fatigue lives in highly stressed Ti components

Putchkov, Igor V.; Temis, Y. M; Dowson, A.L.; Damri, D.

doi:10.1016/0142-1123(95)00005-e

Cited by 10 publications

(6 citation statements)

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“…Nomenclature correlates with works [1][2][3][4]. In [1,2] based on experimental results it was determined that at room temperature number of halfcycles to failure for several structural materials under various loading programs (soft loading, hard loading, random loading) n f and damage D depends on ultimate value max by next relation:…”

Section: Materials Modelsmentioning

confidence: 99%

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Simulation of Thermomechanical Fatigue of Structured Materials

Temis

Fakeev

2014

Procedia Engineering

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Technology of low-cycle fatigue simulation under nonisothermal loading was developed. It is based on the two models: threeparametric model of cyclic stress-strain curve which determines set of thermomechanical surfaces of plastic strain and damage model. Based on experimental results under isothermal cyclic loading thermomechanical surfaces of cyclic loading were created. Parameters of cyclic stress-strain curves were determined by the processing of the experimental data by the optimization techniques. Parameters of damage model were determined by the least squares method. A program for simulation of specimen tests under nonisothermal cyclic loading was developed for the verification of the proposed models under various types of cyclic loading. Influence of creep and creep rupture strength was taken into account in the simulation of nonisothermal cyclic stressstrain curves and low cycle fatigue respectively. Mathematical simulation of the various experiments in literature of thermomechanical fatigue was carried out for the performing of efficiency of the proposed models and programs.

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Section: Materials Modelsmentioning

confidence: 99%

“…The technology of simulation of low cycle fatigue of specimens and parts was originally developed under isothermal cyclic loading conditions [1,2]. Generalization of this technology of the simulation under nonisothermal cyclic loading was proposed in works [3,4] .…”

Section: Introductionmentioning

confidence: 99%

Simulation of Thermomechanical Fatigue of Structured Materials

Temis

Fakeev

2014

Procedia Engineering

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“…Зависимости амплитуд напряжений от числа циклов при различных программах нагружения (1 -эксперимент; 2 -расчет) Модель повреждаемости. Экспериментально установлено [2,3], что при различных программах нагружения конструкционных материалов (постоянный размах напряжений, постоянный размах деформаций, случайный размах напряжений) при постоянной температуре число полуциклов до разрушения при знакопеременном пластическом деформировании связано с предельной величиной q max следующей зависимостью:…”

Section: =1unclassified

“…Введение. Трехпараметрическая модель [1][2][3], предназначенная для моделирования поведения упругопластического материала под воздействием циклического нагружения при постоянных температурах, обобщена на случай неизотермического нагружения. Это позволяет учитывать в процессе неизотермического циклического нагружения в зависимости от температуры и пластической деформации изменение в каждом полуцикле эффекта Баушингера, нелинейного участка кривой деформирования и модуля упругости.…”

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