SU847150A1 - Method of testing sheet materials for biaxial tension - Google Patents

Method of testing sheet materials for biaxial tension Download PDF

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Publication number
SU847150A1
SU847150A1 SU792831008A SU2831008A SU847150A1 SU 847150 A1 SU847150 A1 SU 847150A1 SU 792831008 A SU792831008 A SU 792831008A SU 2831008 A SU2831008 A SU 2831008A SU 847150 A1 SU847150 A1 SU 847150A1
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SU
USSR - Soviet Union
Prior art keywords
sample
sheet materials
testing sheet
biaxial tension
matrix
Prior art date
Application number
SU792831008A
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Russian (ru)
Inventor
Сергей Владимирович Журавлев
Галина Васильевна Сапожникова
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Предприятие П/Я М-5671
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Priority to SU792831008A priority Critical patent/SU847150A1/en
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Publication of SU847150A1 publication Critical patent/SU847150A1/en

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Description

Изобрётение относитс  к ирпытанию .материалов на прочность, а именно к способам испытани  листовых материалов н-а двухосное раст жение.The invention relates to the testing of strength of materials, namely to methods for testing sheet materials and to biaxial stretching.

Известен способ испытани  листовых материалов на двухосное раст жение , заключающийс  в том, .что образец в виде диска устанавливают на матрицу, прижимают кольцом и нагружгиот жестким пуансоном, установленным соосно матрице There is a known method of testing sheet materials for biaxial stretching, which consists in: that the sample in the form of a disk is mounted on a matrix, pressed by a ring and loaded from a rigid punch mounted coaxially with the matrix.

Недостатком этого способа  вл етс  низка  его точность из-за неравномерности условий нагружени .The disadvantage of this method is its low accuracy due to the uneven loading conditions.

Наиболее близким к изобретению по технической сущности и достигаемому результату  вл етс  способ испытани  листовых материалов на двух-; осчое раст жение, заключающийс  в том, что образец материала в виде диска размещают на матрице, при шмают его с помощью кольца, нагружают ударной нагрузкой с помощью жесткого пуансона, расположенного соосно с матрицей, до по влени  трещин и по характерному размеру образца суд т о предельной пластич-.Closest to the invention in its technical essence and the achieved result is a method for testing sheet materials in two-; The elastic stretching, which consists in placing a sample of a disk-shaped material on a matrix, loading it with a ring, loading it with a shock load using a rigid punch, located coaxially with the matrix, until a crack appears and according to a characteristic sample size ultimate plasticity.

ности 21.21.

Недостатком этого способа  вл етс  его сложность, так как при егоThe disadvantage of this method is its complexity, since with its

гg

осуществлении необходимо испытать несколько образцов разного размера при посто нной.энергии удара.implementation, it is necessary to test several samples of different sizes at a constant impact energy.

Цель изобретени  - упрощение способа .The purpose of the invention is to simplify the method.

Дл  достижени  поставленной цели используют Образец с конической боковой поверхностью, определ ют диаметр сечени , в котором расположена To achieve this goal, use a Sample with a conical side surface, determine the diameter of the cross section in which the

10 вершина трещины, и принимают его эа характерный размер образца.10 is the tip of the crack, and its characteristic sample size is taken.

На фиг. 1 показана схема испытани  образца; Иа фиг. 2 - образец с трещиной после нагружени .FIG. 1 shows a sample test circuit; FIG. 2 - a sample with a crack after loading.

1515

Способ оеуществл. ют следукщим образом.The way it is. are following way.

Образец 1 в виде диска с конической боковой поверхностью 2 устанавли20 вают на матрице 3. Затем прижимают образец 1 с помсхцью кольца 4 и корпуса 5 и нагружают его ударной нагрузкой Р с помощью жесткого пуансОна 6 диаметра d, установленного Sample 1 in the form of a disk with a conical side surface 2 is installed 20 on the matrix 3. Then they press the sample 1 with the ring 4 and the housing 5 and load it with a shock load P using a hard punch 6 of diameter d,

25 в корпусе 5 соосно с матрицей 3, до по влени  трев|ины 7 в образце-1. затем определ ют диаметр О сечени , в котором раслбложена вершина В треШины 7, и принимают его за характер30 ный размер образца 1. Предельную25 in housing 5 coaxially with matrix 3, until alarm 7 appears in sample-1. Then, the diameter O of the cross section, in which the top B of Tire 7 is laid, is determined and is taken as the characteristic size of sample 1.

Claims (1)

Формула изобретенияClaim Способ испытания листовых лов на двухосное растяжение, материал заклюс матрицей, ‘до появления трещины и по характерному размеру образца судят о предельной пластичности, о т л и ч а ю щ и й с я тем, что, с целью упрощения способа, используют образец с конической боковой поверхностью, определяют диаметр сечения, в котором расположена вершина трещины, й принимают его за характерный размер образца.A method of testing sheet fishing for biaxial tension, material with a matrix, before the crack appears and by the characteristic size of the sample, they judge the ultimate plasticity, since they are used in order to simplify the method with conical lateral surface, determine the diameter of the section in which the crack tip is located, and take it for the characteristic size of the sample.
SU792831008A 1979-10-24 1979-10-24 Method of testing sheet materials for biaxial tension SU847150A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU792831008A SU847150A1 (en) 1979-10-24 1979-10-24 Method of testing sheet materials for biaxial tension

Applications Claiming Priority (1)

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SU792831008A SU847150A1 (en) 1979-10-24 1979-10-24 Method of testing sheet materials for biaxial tension

Publications (1)

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SU847150A1 true SU847150A1 (en) 1981-07-15

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108844816A (en) * 2018-03-30 2018-11-20 东南大学 A kind of yield criterion appraisal procedure based on cruciform specimen biaxial tension-compression strength

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108844816A (en) * 2018-03-30 2018-11-20 东南大学 A kind of yield criterion appraisal procedure based on cruciform specimen biaxial tension-compression strength

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