SU542935A1

SU542935A1 - Method for testing specimens of sheet materials for bending

Info

Publication number: SU542935A1
Application number: SU2116033A
Authority: SU
Inventors: Владимир Антонович Лупин; Юрий Николаевич Никулин; Анатолий Иванович Мурашов
Original assignee: Уральский научно-исследовательский институт трубной промышленности
Priority date: 1975-03-24
Filing date: 1975-03-24
Publication date: 1977-01-15

Description

На фиг. 1 изображен образец и схема его нагружени при изгибе; на фиг. 2 - схема нагружени раст жением; на фиг. 3 - приспособление дл испытани ; на фиг. 4 - сечение по А-А на фиг. 3.FIG. Figure 1 shows a sample and its bending loading pattern; in fig. 2 is a tensile loading scheme; in fig. 3 - device for testing; in fig. 4 is a section along A-A in FIG. 3

Рабочую часть образца 1 в виде пр моугольной пластины с надрезом 2 жестко прикрепл ют к захватным част м 3 и 4. Захватные части выполнены Г-образной формы и пмеют отверсти 5 и 6, в которых установлены осп 7 и 8 дл креплени и дополнптельные отверсти 9 и 10, в которых установлены осиThe working part of sample 1 in the form of a rectangular plate with a notch 2 is rigidly attached to the gripping parts 3 and 4. The gripping parts are L-shaped and stick holes 5 and 6, in which small pox 7 and 8 are mounted for fastening and additional holes 9 and 10, in which the axles are installed

11и 12 дл нагружени образца 1. Нагружение осуществл ют с помощью приспособлени 13, включающего т ги 14 и 15 и кривощипы 16 п 17, св занные с пуансоном 18. Усилие через пуансон 18, т ги 14 и 15, оси 7 и 8, кривошипы 16 и 17 и оси 11 и 12 прикладываетс к захватным част м 3 и 4 образца 1.11 and 12 for loading the sample 1. The loading is carried out with the help of the tool 13, which includes the rods 14 and 15 and the curvature 16 and 17, connected to the punch 18. The force through the punch 18, the rods 14 and 15, axes 7 and 8, the cranks 16 and 17 and axes 11 and 12 are applied to the gripping portions 3 and 4 of sample 1.

Дл нагружени образца 1 раст гивающим усилием Р центры основных отверстий 5 и 6 и дополнительных отверстий 9 и 10 располагают на разных рассто ни х от оси симметрии образца 1, последние на большем, а оси 11 иFor loading sample 1 with a tensile force P, the centers of the main holes 5 and 6 and the additional holes 9 and 10 are located at different distances from the symmetry axis of sample 1, the latter at a larger one, and axis 11 and

12устанавливают в отверсти 5 и 6.12 Install into holes 5 and 6.

Claims

Claims 1. A method for testing specimens of sheet materials for bending, comprising:

That a sample of length is used, including a working part in the form of a rectangular plate with a notch and two gripping parts of an L-shaped shape, the ends of the shelves of which are rigidly connected to the working part, and holes are mounted in their holes; sample n is loaded with a punch from the side, cut halfway through the notch, characterized in that, in order to improve the accuracy of the tests, a sample is used, which has an additional hole in each gripping part, is installed in these holes and loading is carried out with

with the help of a device that includes rods and cranks, one ends of the rims are connected to the punch, and others to the axis installed in one of the holes of each gripping part, and the ends of the cranks are fixed on the axes,

installed in the holes of each gripping part.

2. A method according to claim I, characterized in that, in order to load the sample also by stretching, the centers of the main and additional holes are located at different distances from the axis of symmetry of the sample, the latter at a larger one.

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