CS217694B1 - Mass to simulate the elastomeric material with optional material characteristics - Google Patents
Mass to simulate the elastomeric material with optional material characteristics Download PDFInfo
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Abstract
Vynález spadá do odboru fyziky tuhých látok. Rieši hmotu na simulovanie vázkopružného materiálu s volitelnými materiálovými charakteristikami pre použitie v laboratórnych podmienkach. Hmota sa skládá z gleja, glycerínu a vody, ktoré sa zmiešajú v pomere 1 : 0,8 až 2 : 0,01 až 1,2. Hmota sa dá použiť pre meranie modulu pružnosti v tlaku E (MPa) v rozpátí od 0,033 do 0,336 MPa.The invention falls within the field of solid state physics. Solves a viscoelastic material simulation mass with optional material characteristics for use in laboratory conditions. The mass consists of glue, glycerin and water, which are mixed in a ratio of 1:0.8 to 2:0.01 to 1.2. The mass can be used to measure the modulus of elasticity under pressure E (MPa) in the range from 0.033 to 0.336 MPa.
Description
Vynález sa týká hmoty na simulovanie vázkopružného materiálu s volitelnými materiálovými charakteristikami.BACKGROUND OF THE INVENTION 1. Field of the Invention The invention relates to a material for simulating a viscous material with selectable material characteristics.
Modelovanie vázkopružného polopriestoru v laboratórnych podmienkach bolo sprevádzané s určitými íažkosťami, nakolko modelové materiály sa vyznačovali nestálými hodnotami materiálových charakteristik, čo znemožňovalo dlhodobejšie laboratorně merania a ich zlou tvárnitelnosťou. Materiálové charakteristiky, ktoré sa modeluj ú, sú modul pružnosti v tlaku, modul pružnosti v smyku, Poissonov súčinitel’ a iné, ktoré si tieto vlastnosti zachovává stabilně dlhšiu dobu, až niekolko rokov.Modeling of the semi-flexible semi-space under laboratory conditions was accompanied with some difficulty, as the model materials were characterized by unstable values of material characteristics, which prevented long-term laboratory measurements and their poor formability. The material characteristics to be modeled are the compressive modulus, the shear modulus, the Poisson's coefficient, and others, which retain these properties stably over a period of up to several years.
Nedostatky sú odstránené u hmoty na simulovanie vázkopružného materiálu s volitelnými materiálovými charakteristikami podl’a vynálezu, ktorej podstatou je, že sa skládá z gleja, glycerínu a vody, ktoré sú zmiešané v pomeroch hmotnosti 1 : 0,8 až 2 : 0,01 až 1,2. Modul pružnosti v tlaku E (MPa) je v rozpátí od 0,033 MPa do 0,336 MPa a hmota má výrazné vázkopružné charakteristiky s extrémně úzkým modulom pružnosti E (MPa), resp. G (MPa) a poměrně vysoké tlmiace charakteristiky, ako například logaritmický dekrement útlmu rádu 0,7. Nízká rýchlosť šírenia dynamických impulzov CR = 3,0 m . s1 umožňuje sledovat čelo vlny, jej odraz a interferencím Hmota má dobrú formulovatel’nosť do potřebných materiálov odlievaním za tepla alebo řezáním z váčších kusov za studená.The drawbacks are eliminated in a mass for simulating a viscous material with optional material characteristics according to the invention, which consists in that it consists of glues, glycerin and water, mixed in ratios of 1: 0.8 to 2: 0.01 to 1.2. The modulus of elasticity in compression E (MPa) ranges from 0.033 MPa to 0.336 MPa and the mass has distinctive elastic characteristics with an extremely narrow modulus of elasticity E (MPa), respectively. G (MPa) and relatively high damping characteristics, such as log attenuation decrement of the order of 0.7. Low dynamic pulse propagation speed C R = 3.0 m. s 1 makes it possible to trace the wave front, its reflection and interference The material has good formability into the necessary materials by hot casting or cutting from larger pieces cold.
Vynález je ilustrovaný na príkladoch prevedenia.The invention is illustrated by way of example.
Příklad 1Example 1
Zmieša sa glej, glycerín a voda v pomere 1 : 0,8 : 1,2. Získá sa hmota s najnižším modulom pružnosti v tlaku E = 0,033 MPa. Příklad 2Mix the size, glycerine and water at a ratio of 1: 0.8: 1.2. The mass with the lowest compressive modulus E = 0.033 MPa is obtained. Example 2
Zmieša sa glej, glycerín a voda v pomere 1 : 1,2 : 0,8. Získá sa hmota s najváčšou- hodnotou modulu pružnosti v tlaku E = 0,336 MPa.Mix the size, glycerin and water at a ratio of 1: 1.2: 0.8. The mass with the greatest value of the modulus of elasticity at compression E = 0.336 MPa is obtained.
Příklad 3Example 3
Z počtu 10 vzoriek, vyhotovených pťi róznych pomeroch jednotlivých komponentov hmoty, bol zostavený graf na obr. 1 pre určenie velkosti E (MPa) v závislosti na vzájomných pomeroch glej, glycerín, voda. Na vodorovnú os bola nanesená velkost čísla a = — pričom nj je poměr medzi dielom glycen2 řinu a gleja a n2 je poměr medzi vodou a glejom. Na zvislú os boli nanášané hodnoty zistených modulov pružnosti E (MPa).From the number of 10 samples prepared in five different proportions of the individual components of the mass, the graph in fig. 1 for determining the size E (MPa) depending on the relative ratios of size, glycerine, water. The magnitude of the number a = - was plotted on the horizontal axis, where nj is the ratio between the portion of glycine n 2 lineage and the size and n2 is the ratio between water and size. The values of the determined modulus of elasticity E (MPa) were applied to the vertical axis.
Příklad 4Example 4
Za účelom zistenia spolehlivosti grafu na obr. 1 pre výrobu hmoty s vopred zvolenou vefkosťou modulu pružnosti a tlaku E = 3,1 MPa a stanovením potřebného hmotnostného poměru jednotlivých zložiek, odčítáme pre a = 0,92, čo odpovedá pre 1 hmotnostný diel gleju 0,9 hmotnostného dielu vody a 1,04 hmotnostného dielu glycerínu. Experimentálně zmerané E = 0,3078 MPa.In order to determine the reliability of the graph in FIG. 1 for the production of a mass with a preselected size of the modulus of elasticity and pressure E = 3.1 MPa and determination of the necessary weight ratio of the individual components, subtracted for a = 0.92, which corresponds to 1 part by weight of sizing 0.9 parts by weight of water and 1, 04 part by weight of glycerin. Experimentally measured E = 0.3078 MPa.
Zisťovanie modulu pružnosti v tlaku sa vykonávalo na vzorkách tvaru valca s priemerom d = 9,0 cm a výškou h = 1,8 cm na zariadení, zvlášť pre tento účel zhotovenom. Z Hookovho zákona vyplývá pre velkosť modulu pružnosti v tlaku vzťah EThe determination of the compressive modulus was performed on cylindrical specimens having a diameter d = 9.0 cm and a height h = 1.8 cm on a device specially made for this purpose. Hook's law implies the relation E for the size of the compressive modulus
F.lORL
Ál-S pre oblast pružných deformácií.Ál-S for elastic deformation.
F je sila, pósobiaca na deformované teleso; l je jeho dlžka; Al je absolútne skrátenie prúta, v našom případe stlačenie skúšobnej vzorky hmoty v tvare valca; S je prierezová plocha prúta, v našom případe pódorysná plocha valca. Sila F bola vyvolaná kvapalinou, ktorá pósobila rovnoměrně na celú plochu valca a bola meraná s presnosťou 0,01 N; absolútne skrátenie Al skúšobnej vzorky sa meralo indikátorovými hodinkami s presnosťou 0,001 mm.F is the force acting on the deformed body; l is its length; A1 is the absolute shortening of the rod, in our case the compression of the cylinder-shaped mass sample; S is the cross-sectional area of the bar, in our case the surface area of the cylinder. The force F was exerted by a liquid which acted uniformly over the entire surface of the cylinder and was measured to an accuracy of 0.01 N; the absolute truncation of the Al test sample was measured with an indicator watch with an accuracy of 0.001 mm.
V případe, kde bola hmota vyrobená z dielu vody rózneho od 0 bolo zistené, že hodnota E sa nemení po 28 dňoch od vyrobenia predmetnej hmoty aj v případe, že podiel vody v hmotě dosiahol hodnoty 1,2 hmotnostného dielu.In the case where the mass was made from a part of water different from 0, it was found that the E value did not change 28 days after the production of the subject mass, even if the water content in the mass reached 1.2 parts by weight.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS466681A CS217694B1 (en) | 1981-06-22 | 1981-06-22 | Mass to simulate the elastomeric material with optional material characteristics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS466681A CS217694B1 (en) | 1981-06-22 | 1981-06-22 | Mass to simulate the elastomeric material with optional material characteristics |
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| Publication Number | Publication Date |
|---|---|
| CS217694B1 true CS217694B1 (en) | 1983-01-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS466681A CS217694B1 (en) | 1981-06-22 | 1981-06-22 | Mass to simulate the elastomeric material with optional material characteristics |
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| CS (1) | CS217694B1 (en) |
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1981
- 1981-06-22 CS CS466681A patent/CS217694B1/en unknown
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