SU805109A1

SU805109A1 - Device for testing prismatic specimens by tri-axial pressure

Info

Publication number: SU805109A1
Application number: SU792742995A
Authority: SU
Inventors: Анатолий Григорьевич Оловянный
Original assignee: Всесоюзный Научно-Исследователь-Ский И Проектный Институт Галургии"Внииг"
Priority date: 1979-03-28
Filing date: 1979-03-28
Publication date: 1981-02-15

Description

1one

Изобретение относитс к испытанию материалов иа прочность, а именно к устройствам дл испытанн прнзматнческих образцю на трехосное сжатие.The invention relates to the testing of materials and their strength, in particular to devices for testing three-axis compression specimens.

Известна установка дл испытани прнзматнческнх образцов на трехошое сжатие, содержаща шесть шшт, установленных с возможностью относительного перемещени по трем взаимно перпендикул рным напр жением 1.A known setup for testing three-dimensional compression specimens containing six pieces that are installed with the possibility of relative movement along three mutually perpendicular stresses 1.

Недостатком этой установки вл етс низка точность испытаний из-за того, что нагрузка на образец передаетс по всей его поверхностн и ненагруженными остаютс участки по контуру плит.The disadvantage of this setup is the low accuracy of the tests due to the fact that the load on the sample is transmitted along its entire surface and the areas along the contour of the plates remain unloaded.

Наиболее близкой к предлагаемой по технической сущности и достигаемому результату вл етс установка дл испытани призматических образцов на трехосное сжатие, содержаща основание и установленные на нем с возможностью перемещени др}а- относительно друга в трех взаимно перпендикул рных направлени х опорные и нажимные плиты 2.Closest to the proposed technical essence and the achieved result is a setup for testing prismatic samples for triaxial compression, containing a base and mounted on it with the possibility of moving others} and - relative to each other in three mutually perpendicular directions 2 and the pressure plates.

Недостатком известной устаиовкн вл етс слохсность ее конструкцни, так как дл осуществленн взаимного перемещени плит без отрыва их друг от друга в этой установке применена сложна система, содержаща упругие элементы и направл ющие.The drawback of the known installation is the lack of design of the structure, since for the mutual movement of the plates without separating them from each other, this installation uses a complex system containing elastic elements and guides.

Цель изобретени - упрощение конструкции установки.The purpose of the invention is to simplify the installation design.

Указаниа цель достигаетс тем, что на двух смежных боковых гран х каждой из плит заподлицо с их рабочей поверхностью выполнен выступ, на рабочих поверхност х плит вдоль двух других смежных граней выполнен открытый паз, ширина которого равна толщиие выступа, а глубина - больше высоты выступа, а плить.1 установлены таким образом , что выступь одних заход т в соответствующие пазы других, смежных с ними плит.The goal is achieved by the fact that on two adjacent lateral edges of each of the plates, a protrusion is made flush with their working surface, an open groove is made on the working surfaces of the plates along two other adjacent faces, the width of which is equal to the thickness of the protrusion, and the slabs.1 are installed in such a way that some of them protrude into the corresponding grooves of the other adjacent plates.

На фиг. 1 приведена схема установки; на фиг. 2 - одна из плит, вид сверху; на фиг. 3 - то же, вид спереди.FIG. 1 shows the installation diagram; in fig. 2 - one of the plates, top view; in fig. 3 - the same, front view.

Claims

The installation comprises a base 1, three support plates 2-4 and three pressure plates 5-7 installed on the base with the possibility of moving them relative to each other in three mutually perpendicular directions. 38 Pressure plates 5-7 interact with corresponding plungers 8-10 loading mechanisms (not shown). A protrusion 13 is made on two adjacent tank edges x 11 and 12 of each of the plates 2-7. On the working surfaces 14 of each of the plates 2-7, a groove 17 is made along the two adjacent faces 15 and 16, the depth t of which is more than the height h of the protrusion 13 and the width b is equal to the thickness d of the protrusion 13. The installation works as follows. Sample 18 of a prismatic shape is placed between the support plates 2-4 and pressure plates 5-7, so that the working surfaces 14 pieces 2 and 3 interact with the shaft 18, and the projections on the lateral faces x 12 plates 2-7 enter the slots 17 adjacent pc 2-7. Place the assembled plates with sample 18 on the base 1, load the sample 18 with the help of plungers 8-10 until it is destroyed. When sample 18 is deformed, plates 2-7 are mixed relative to each other in three mutually perpendicular directions and the protrusions 13 of some plates 2-7 move in the slots J7 of the other slides 2-7 and sample 18 is loaded with a uniformly distributed force over its entire surface. The invention The apparatus for testing prismatic samples for triaxial compression, comprising a base and mounted on it with the ability to move relative to each other in three mutually perpendicular directions, support and pressure plates, characterized in that, in order to simplify the design, on two adjacent lateral The faces of each of the plates flush with their working surface are made a protrusion, on the working surfaces of the plates along two other adjacent faces there is an open groove, the width of which is equal to the thickness of the protrusion and the depth more than the height of the protrusion, and the plates are installed in such a way that the protrusions of some fit into the corresponding grooves of the other adjacent plates. Sources of information taken into account in the examination 1. Mechanical properties of rocks. M., Publishing House of the Academy of Sciences of the USSR, 1963, p. 39-40.

2. USSR author's certificate number 394692, cl. G 01 N 3/08, 1973 (prototype).

15 P

P

15