التفاصيل البيبلوغرافية
| العنوان: |
The regularity of the transmission of vibroimpact-peristaltic effects on concrete mix and concrete. |
| المؤلفون: |
Khasanov, B. B., Vatin, N. I., Choriev, R. K., Firlina, G. L., Urunboev, S. K., Mirzaev, T. A. |
| المصدر: |
AIP Conference Proceedings; 2023, Vol. 2612 Issue 1, p1-10, 10p |
| مصطلحات موضوعية: |
CONCRETE mixing, CONCRETE columns, CONTINUUM mechanics, MODULUS of elasticity, STRAINS & stresses (Mechanics), FREQUENCIES of oscillating systems |
| مستخلص: |
It is accepted that as a result of the complex impact of vibration-impact forces on the elementary volume of the concrete mixture with section F, the sum of the three main forces acts (Fig. 1). This includes the gravity force of the molded product and the outer shape m, inertial forces I, and the shock load P from the vibration core pressing band. The most difficult is determining the pressure from the impact of the shock load of the pressing band. Moreover, the use of a shock load resulting from the reciprocating movements of the outer shape and the concrete pipe being manufactured leads to a twisting shock. To determine the actual mechanical stress by the method of continuum mechanics, the following prerequisites were used: - there is a directly proportional relationship between stress and deformation upon impact; - the modulus of elasticity of the concrete mixture under static and shock loading is the same; - the height of the core section with the pressing band is equal to the initial displacement of the column of a concrete mixture. These prerequisites have been confirmed with a sufficient degree of accuracy by experiments. In this case, the system in which interactions are realized, representing the process of systematic collisions, is called a vibroimpact system. Naturally, these interactions have significant specificity in comparison with the act of a single impact. However, this is true if the frequency of forced collisions, as in the case under study, is comparable to the frequency of natural vibrations of the column of the compressed concrete mixture. In this situation, the collision of a pressing organ, for example, a bandage and a column of concrete mixture, occurs in an excited system with a certain reserve of energy, which can accumulate from impact to impact, causing the development of the process of hyperexposure of the mixture. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
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