Three-Dimensional Finite Element Analysis of Tensile-Shear Spot-Welded Joints in Tensile and Compressive Loading Conditions
نویسندگان
چکیده
Выполнен трехмерный конечноэлементный анализ образцов с одним, тремя и пятью точеч ными сварными швами при растяж ении и сжатии. Д ля расчета на прочность исполь зуется распределение упругопластических напряжений в корне точечного шва. Предложена методика субмоделирования, позволяющая получить более точные результаты конечно элементного расчета точечных швов малых размеров. Схема численного расчета дает возмож ность учитывать параметры материала и геометрические нелинейные эффекты, обусловленные наличием зазора меж ду тонкостенными пластинами, их выпучиванием и т.д. Проанализировано упругое и упругопластическое поведение образцов с различной конфигу рацией сварных швов при нагружении растягивающими и сжимающими осевыми усилиями.
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