Residual stresses and initial imperfections in non-linear analysis

Pastor, M.M.; Bonada, J.; Roure, Francesc; Casafont, Miquel

doi:10.1016/j.engstruct.2012.08.013

Cited by 33 publications

(18 citation statements)

References 25 publications

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“…In contrast to traditional methods for analyzing complex processes, the nonlinear recurrence analysis proposed by Poincare, as well as the obtained recurrence diagrams, allow one to study and predict the behavior of the system using discrete mapping [7][8][9][10].…”

Section: список литературы 1нойманmentioning

confidence: 99%

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2019

ESU

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Ежемесячный научный журнал № 12 (69) / 2019 5 часть Редакционная коллегия: д.п.н., профессор Аркулин Т.В. (Москва, РФ) Члены редакционной коллегии: Ответственный редактор д.п.н., профессор Каркушин Дмитрий Петрович (Москва, Россия) Международные индексы: Ответственный редактор: Главный редактор: Завальский Яков Андреевич (Россия), доктор психологических наук, профессор Международный редакционный совет: Научный редактор: Игнатьев Сергей Петрович (Россия), доктор педагогических наук, профессор Ответственный секретарь редакции: Давыдова Наталия Николаевна, кандидат психологических наук, доцент. Арсеньев Дмитрий Петрович (Россия), доктор психологических наук, профессор, заведующий лабораторией Бычковский Роман Анатолиевич (Россия), доктор психологических наук, профессор, МГППУ Ильченко Федор Валериевич (Россия), доктор психологических наук, профессор, заведующая лабораторией психологии Кобзон Александр Владимирович (Россия), доктор педагогических наук, профессор Панов Игорь Евгеньевич (Россия), доктор технических наук, профессор Петренко Вадим Николаевич (Казахстан), доктор психологических наук, профессор Прохоров Александр Октябринович (Казахстан), доктор педагогических наук, профессор Савченко Татьяна Николаевна (Беларуссия), кандидат психологических наук, доцент Стеценко Марина Ивановна (США), Ph.D., профессор Строганова Татьяна Александровна (Украина), доктор педагогических наук, профессор Статьи, поступающие в редакцию, рецензируются. За достоверность сведений, изложенных в статьях, ответственность несут авторы. Мнение редакции может не совпадать с мнением авторов материалов. При перепечатке ссылка на журнал обязательна. Материалы публикуются в авторской редакции. Журнал зарегистрирован Федеральной службой по надзору в сфере связи, информационных технологий и массовых коммуникаций. Художник: Валегин Арсений Петрович Верстка: Курпатова Ирина Александровна Адрес редакции: г. Москва, Лужнецкая набережная 2/4, офис №17,

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Section: список литературы 1нойманmentioning

confidence: 99%

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2019

ESU

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“…In addition, the first buckling mode of imperfection in the analysis overestimated the strength of the member by 15% [17]. III) The use of the sinusoidal-shaped local imperfection mode for local buckling does not always represent the appropriate mode to be introduced for nonlinear buckling analysis [18][19]. Different shapes of local imperfections have a different effect on members buckling strength.…”

Section: Introductionmentioning

confidence: 99%

07.19: Geometric imperfection measurements on cold‐formed steel channels: An approach using 3D non‐contact laser scanner

Selvaraj

Madhavan

2017

ce papers

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A 3D non-contact laser scanning method to quantify the deviations in cold-formed steel (CFS) channel sections (plain and lipped) is presented. The methodologies to segregate the different categories of imperfections from the deviations in the geometry of CFS member are also presented. A total of 13 different C-sections with varying cross-sectional parameters totaling to 78 specimens were studied. The nature of imperfections in the CFS members was found to correlate with the geometric properties such as slenderness ratios, torsional constant and plate slenderness. The bow and camber imperfection (global out-of-straightness) in the members is presented with respect to the minor and major axis slenderness ratios. A new combined global and cross-sectional parameter (J/L) was introduced against the deviation due to twist of the CFS member. To predict the imperfection magnitudes based on their geometrical properties, a new set of expressions were suggested.wileyonlinelibrary.com/journal/cepa | 1665

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“…If the methodology presented in [17] is used, it is not necessary to define an arbitrary initial geometric imperfection in order to calculate the ultimate load of rack columns under pure compression load.…”

Section: Introductionmentioning

confidence: 99%

“…The main difference between them is the geometrical imperfection value generated due to the equilibrium of the residual strain distribution introduced as initial state into the finite element model, but its influence is insignificant if the residual stresses are used in the nonlinear buckling analysis [17]. This geometrical imperfection is obtained as a consequence of introducing a simplified strain pattern along the column length.…”

Section: Influence Of Residual Stressesmentioning

confidence: 99%

“…Quach et al [12] introduced the residual stresses of a press-braked Csection [13][14][15][16] in a nonlinear buckling analysis. In [17] an analysis to predict the load carrying capacity of non-perforated rack columns was presented considering the residual stresses due the cold roll-forming process obtained through finite element analysis of the manufacturing process.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Influence of the cold work effects in perforated rack columns under pure compression load

Bonada

Pastor

Roure

et al. 2015

Engineering Structures

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This paper analyses the influence of residual stresses and strain hardening due to the cold rollforming process on the load carrying capacity of perforated rack columns. First of all, a residual strain distribution of the manufacturing process is obtained via a finite element analysis and then it is introduced in the model as initial state to carry out a nonlinear buckling analysis. Two different methodologies to introduce the residual strain pattern are presented in order to reproduce the local stress effects because of perforations. Moreover, the changes of the mechanical properties of the material by strain hardening are evaluated through experimental tests and its influence on the rack column behaviour is investigated. The results obtained agree well with experimental tests and show a method to predict the load carrying capacity of perforated rack column taking into account the effects of the cold roll-forming process.

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Residual stresses and initial imperfections in non-linear analysis

Cited by 33 publications

References 25 publications

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07.19: Geometric imperfection measurements on cold‐formed steel channels: An approach using 3D non‐contact laser scanner

Influence of the cold work effects in perforated rack columns under pure compression load

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