| Autor: |
Helena Šebková, Dušan Gabriel, Josef Beneš, Eduard Veselý |
| Rok vydání: |
1995 |
| Předmět: |
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| Zdroj: |
Contact Mechanics ISBN: 9781461358176 |
| DOI: |
10.1007/978-1-4615-1983-6_42 |
| Popis: |
Presented investigation was initiated by the necessity to solve stress waves propagation through the impact loaded structural connections as connection of die block with ram of machine hammer (Benes et al (1994)) or contact between acoustic emission transducer (AE) and structure (Benes et al (1994)). Contact between these parts isn’t perfect due to machining and sometimes also wearing occurs during working life. Numerical simulations of model experiments shown that the correspondence of calculations and measurements is strongly influenced by neglecting the mentioned imperfections. To explain this process clearly we can speak about two tasks: 1) The macroscale behaviour of contact surfaces. The contact area can be significantly changed during the loading process if the distance of parts of body surfaces in contact area is comparable to normal displacements of corresponding surface particles 2) The microscale behaviour of contact interface. Usually there is not a perfect connection of individual particles in the contact of two surfaces of the same shape (in macroscale). This imperfection of contact is caused by surface roughness due to machining process. Variation of the normal and tangential stiffness of surface layer is caused by this effect. The situation is presented in Figure 1 |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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