zldmЗаводская лаборатория. Диагностика материаловIndustrial laboratory. Diagnostics of materials1028-68612588-0187ООО «Издательство «ТЕСТ-ЗЛ»10.26896/1028-6861-2026-92-1-70-76zldm-2704Research ArticleМЕХАНИКА МАТЕРИАЛА: ПРОЧНОСТЬ, РЕСУРС, БЕЗОПАСНОСТЬMATERIALS MECHANICS: STRENGTH, DURABILITY, SAFETYИсследование напряженного состояния в зоне расслоения слоистой стальной пластиныResearch of the stress state in the delamination zone of a laminated steel plateКрючковД. И.KryuchkovD. I.

Денис Игоревич Крючков

620049, г. Екатеринбург, Комсомольская ул., д. 34

Denis I. Kryuchkov

34, Komsomolskaya ul., Yekaterinburg

kru4koff@bk.ruКаманцевИ. С.S.Ivan S. Kamantsev I.

Иван Сергеевич Каманцев

620049, г. Екатеринбург, Комсомольская ул., д. 34

Ivan S. Kamantsev

34, Komsomolskaya ul., Yekaterinburg

ШвейкинВ. П.ShveikinV. P.

Владимир Павлович Швейкин

620049, г. Екатеринбург, Комсомольская ул., д. 34

Vladimir P. Shveikin

34, Komsomolskaya ul., Yekaterinburg

Институт машиноведения им. Э. С. Горкунова УрО РАНРоссияInstitute of Engineering Science, RAS, Ural BranchRussian Federation2026290120269217076Copyright © Крючков Д.И., Каманцев И.С., Швейкин В.П., 20262026Крючков Д.И., Каманцев И.С., Швейкин В.П.Kryuchkov D.I., S. I.I., Shveikin V.P.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://www.zldm.ru/jour/article/view/2704

На формоизменение и разрушение многослойных материалов влияет множество факторов: способ изготовления материала, количество и толщина слоев и др. Цель работы — исследование напряженно-деформированного состояния на межслойных границах слоистого металлического композиционного материала на основе сталей 09Г2С и 12Х18Н10Т. Процесс расслоения анализировали с использованием конечно-элементного моделирования совместно с методом виртуального закрытия трещин. При проведении испытаний варьировали критическую скорость высвобождения упругой энергии в условиях отрыва двух образцов с разным отношением толщины отрываемой части к общей толщине образца. Показано, что для инициации расслоения необходимо, чтобы критическая скорость высвобождения упругой энергии была ниже 40 кДж/м2. Установлено, что в зависимости от отношения толщины отрываемой части к общей толщине расслоение начинает формироваться в разных местах образца. При этом отклонение максимального главного напряжения в вершине трещины от направления приложения нагрузки составляет 10°. Выявлено, что при испытаниях на расслоение предпочтительнее использовать образец, в котором отношение толщины отрываемой части к общей толщине меньше. Полученные результаты могут быть использованы при подборе геометрии образца для испытаний на расслоение и оценке качества соединения слоев.

Many factors (the method of manufacturing the material, the number and thickness of the layers, the pattern of alternating layers) influence on forming and destruction of multilayer materials. The purpose of the work is to evaluate the effect of the thickness of the torn part on the total thickness of the sample on the stress-strain state at the interlayer boundaries of a layered metal composite material based on 09G2S and 12Kh18N10T steels. The debonding process is implemented using finite element modeling in conjunction with the virtual crack closure (VCCT) method. A series of computational experiments has been implemented with varying the critical rate of elastic energy release under conditions of separation of two samples with different ratios of the thickness of the torn part to the total thickness of the sample. As a result of a series of computational experiments, the stress state along the junction boundary was determined. The stratification will begin when the criterion for the critical rate of release of elastic energy GIS is below 40 kJ/m2. The stratification begins to form in different places, depending on the ratio of the thickness of the torn part to the total thickness of the samples under study. The deviation of the maximum main stress at the crack tip from the direction of application of the load is 10°. It is more preferable to use a sample where the ratio of the thickness of the torn part to the total thickness of the sample is less. The results obtained can be used in selecting the geometry of the sample for stratification tests and evaluating the quality of the joint layers.

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The authors declare that there are no conflicts of interest present.