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Analiza porównawcza wytrzymałości wybranych połączeń prowadnicowych, stosowanych w budowie maszyn

Bławucki S., Zaleski K.

Technologia i Automatyzacja Montażu

2016

nr 2

11--15

Wykonywanie połączeń kształtowych wiąże się z trudnościami technologicznymi, stąd potrzeba poszukiwania nowych, prostszych do wykonania konturów. W pracy dokonano oceny porównawczej trudności wykonania i montażu połączeń kształtowych o zarysie trapezowym i teowym oraz zaproponowano nowe kształty połączeń konstrukcyjnych. Przeprowadzono obliczenia numeryczne wytrzymałości statycznej połączeń w stanie zmontowanym, z wykorzystaniem metody elementów skończonych w programie ABAQUS.

The performance of shaped joints is associated with many technological problems, hence the need to seek out new, simpler to perform, contours. This paper contains an comparative assessment of difficulties of performance and mounting of trapezoidal and T-slot shaped joints and new outlines of joints were proposed. There were also done the numerical computations of the static strength in ready-assembled joints with the use of finite element method in ABAQUS program.

Examination of the influence of pressing parameters on strength and geometry of joint between aluminum plate and sheet metal

Kowalik M., Trzepieciński T.

Archives of Civil and Mechanical Engineering

2012

Vol. 12, no. 3

292--298

The paper presents technology of fastening of elements made of sheet metal with machine elements of much greater thicknesses (i.e. metal plates) by cold plastic press-joining. The fastening technology consists of inserting the thinner element into a channel on the surface of the plate and pressing by two punches arranged symmetrically along the channel edges. Under the effect of cold plastic strain in the plate, the sheet-metal element is thinned, and one obtains the so-called dovetail joint characterized by good tightness and high electric and thermal conductivity. In the paper, the authors present the results of numerical simulation of a plate–sheet metal joint. The investigation was performed in order to determine the influence of technological parameters of the press-joining process on the quality of contact between the joined elements. The following parameters were analyzed: the distance between the sheet and the punch, the shape of punch's working surface, and the depth of punch sink. The joint between the elements and its characteristics were modeled numerically by the FEM method. The correctness of numerical simulation was verified by metallographic examination and strength tests. FEM simulation proved fully consistent with experimental results.