Dr Hugh Goyder, Cranfield University at the Defence Academy, Shrivenham UK

Some dynamics of bolted interfaces
When Nov 19, 2018
from 02:00 PM to 03:00 PM
Where LR1, Thom Building
Contact Name
Contact Phone 01865-273030
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It is surprising that although the idea of joining interfaces with bolts has been around since antiquity we still know very little about how they work in a dynamic environment. This is particularly remarkable since the interactions of a bolted interface can dominate the vibration behaviour of an engineering structure. This is a severe setback for those using computer modelling.

An experimental approach has been taken, which is challenging since it is not possible to place transducers within the contact patch formed by the interfaces. Consequently novel signal processing methods have had to be developed to extract the information indirectly. These are supplemented by simple computational models.

Recent experiments have shown that there are two extremes of behaviour associated with the contact patch formed by tightening a bolted joint. Further experiments have shown that bending moments may play an important role in joint behaviour.