SU767616A1 - Method for impact compact compression tests of materials - Google Patents
Method for impact compact compression tests of materials Download PDFInfo
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- SU767616A1 SU767616A1 SU782644119A SU2644119A SU767616A1 SU 767616 A1 SU767616 A1 SU 767616A1 SU 782644119 A SU782644119 A SU 782644119A SU 2644119 A SU2644119 A SU 2644119A SU 767616 A1 SU767616 A1 SU 767616A1
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- materials
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- compression tests
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Description
(54) СПОСОБ ИСПЫТАНИЯ МАТЕРИАЛОВ НА УДАРНОЕ СЖАТИЕ(54) METHOD FOR TESTING MATERIALS FOR SHOCK COMPRESSION
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Изобретение относитс к области исследовани прочностных свойств материалов , а именно к способам испытани материалов на ударное сжатие.The invention relates to the field of research of the strength properties of materials, and specifically to methods for testing materials for shock compression.
Известен способ испытаний матерка-5 лов на удар, при котором образец; п6мещенный на наковальне, подвергают удару молота, предварительно разог- нанного до определенной скорости разгонньвл устройством l. Способ приме-10 н етс дл проведени испытаний при невысоких скорост х удара.There is a method of testing the material-5 lov per impact, in which the sample; p6 placed on the anvil, is hit by a hammer, previously accelerated to a certain speed, accelerated by device l. The method is applicable to testing at low impact rates.
Наиболее близким по техническому существу к изобретений) вл етс способ испытани материалов на ударное 15 сжатие, эак.гпочающийс в том, что образец из исследуемого материала помещают между плоскими поверхност ми передающего и опорного элементов в виде стержней посто нного сечени , 20 нанос т удар по торцу передающего элемента ударником и регистрируют параметр деформации опорного элемента , по величине которого определ ют напр женне в образце 2.25The closest in technical essence to the inventions) is a method of testing materials for shock 15 compression, which is in that a sample of the material under study is placed between the flat surfaces of the transmitting and supporting elements in the form of rods of constant cross section, 20 strike at the end face of the transmitting element with a hammer and register the deformation parameter of the support element, the value of which determines the stress in sample 2.25
При таком способе испытаний параметр деформации опорного элемента зависнт от напр жени в испытуемом образце и от эффектов радиальной инерции в опорном, элементе при про- 30With this method of testing, the deformation parameter of the support element depends on the stress in the sample under test and on the effects of radial inertia in the reference element during the test.
хождении через него фронта волны. При больших скорост х деформации, когда длительность удара имеет тот же пор док, что и период радиальных колебаний опорного элемента, погрешность определени напр жени в образце по деформации опорного элемента очень велика.walking through the wave front. At high strain rates, when the impact duration is of the same order as the period of radial oscillations of the support element, the error in determining the stress in the sample from the deformation of the support element is very large.
Целью изобретени вл етс повышение точности определени напр жений в образце при высокоскоростнс сжатии путем устранени эффектов радиальной инерции.The aim of the invention is to improve the accuracy of stresses in a sample during high-speed compression by eliminating the effects of radial inertia.
Цель достигаетс тем, что в качестве передающего и опорного элементов и ударника используют плоские пластины такого размера, что диаметр вписанной в них окружности D и толщина d удовлетвор ют условию D/2 2(У C-tp, где С - скорость звука в материалеThe goal is achieved by using flat plates of such size as the transmitting and supporting elements and the striker, such that the diameter of the circumscribed circle D and thickness d satisfy the condition D / 2 2 (At C-tp, where C is the speed of sound in the material
пластин;plates;
t р - длительность удара, опорную пластину опирают по контуру, а в качестве параметра деформации регистрируют скорость движени центра поверхности, опорной пластины.tp is the duration of the impact, the support plate is supported along the contour, and the speed of the center of the surface, the support plate, is recorded as a deformation parameter.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU782644119A SU767616A1 (en) | 1978-07-17 | 1978-07-17 | Method for impact compact compression tests of materials |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU782644119A SU767616A1 (en) | 1978-07-17 | 1978-07-17 | Method for impact compact compression tests of materials |
Publications (1)
Publication Number | Publication Date |
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SU767616A1 true SU767616A1 (en) | 1980-09-30 |
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Family Applications (1)
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SU782644119A SU767616A1 (en) | 1978-07-17 | 1978-07-17 | Method for impact compact compression tests of materials |
Country Status (1)
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SU (1) | SU767616A1 (en) |
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1978
- 1978-07-17 SU SU782644119A patent/SU767616A1/en active
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