An algorithm is proposed for optimizing the internal structure of a sample obtained by 3D printing, while maintaining the mechanical strength and rigidity. The basis is the pre-calculated stress-strain state of the sample in an elastic isotropic setting. Numerical simulation results are obtained showing the performance of the optimized design using the example of the three-point bending problem. Comparison of the results of numerical modeling, optimized and monolithic samples, in elastic isotropic formulation is presented
The work is devoted to the description of an algorithm for the formation of the internal structure of a product, obtained using the FDM technology, considering the stress-strain state, based on the use of isosurfaces of equivalent stresses obtained on a pre-calculated stress-strain state of the sample in an elastic isotropic formulation. In addition, the preparation of a force structure based on isosurfaces of normal stresses, considering the problem of axial tension/compression of horizontal layers of the sample, typical for the problem of four-point bending, is described. Numerical simulations in ANSYS Workbench have obtained results showing the performance of the optimized design, using the example of the four-point bending problem. Comparison of the results of numerical modelling, optimized and monolithic samples, in elastic isotropic formulation is presented.
Работа посвящена описанию алгоритма формирования внутренней структуры изделия, полученного с использование FDM-технологии с учетом напряженно-деформированного состояния, в основе - использование изоповерхностей эквивалентных напряжений, полученных на предварительно рассчитанном напряженно деформированном состоянии образца в упругой изотропной постановке. Дополнительно описано получение силовой структуры на базе изоповерхностей нормальных напряжений, с учетом задачи осевого растяжения/сжатия горизонтальных слоев образца, характерных для задачи четырёхточечного изгиба. Численным моделированием в ANSYS Workbench получены результаты, показывающие работоспособность оптимизированной конструкции, на примере задачи четырехточечного изгиба. Приведено сравнение результатов численного моделирования, оптимизированного и монолитного образцов, в упругой изотропной постановке.
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