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|Title:||The simulation of impact loads on beam-type structures using a pseudo-dynamic procedure|
|Author:||Melo, F. J. Q.|
Carneiro, J. A. O.
Tavares, C. L.
Camanho, P. P.
Fernandes, A. A.
|Keywords:||pseudo-dynamic techniques (PSD)|
shock energy absorption
|Abstract:||This study proposes an alternate method for the analysis of beams with solid cross-section or built as a framed structure and subjected to transverse impact loads from an external striker. The procedure used in the analysis is a combination of two essential tools using pseudo-dynamic techniques. The method reported here involves only one degree of freedom for the structure modelling and assumes an elastic contact between an external striker and the beam structure, which in reality does not happen. As only one degree of freedom is considered in the analysis, some important limitations are inherent to the method proposed here. Essentially, there is the difficulty of modelling the displacement field associated with the transient structure behaviour accurately, as a consequence of fast-rate impact loads. Another difficulty faced by the method refers to a local structure behaviour associated with contact loads. The present method can deal with large displacements in transversely loaded beams associated to a collapse mechanism having a simple geometry and defined with precision from a single parameter. This ensures reasonable accuracy in the evaluation of the strain energy absorbing capacity of transversely impacted beam structures using a single degree of freedom model in a pseudo-dynamic procedure.|
|Appears in Collections:||MEC - Artigos|
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|STRAIN-104.pdf||The paper describes a pseudo-dynamic simulation of impact of rigid bodies against flexible structures||472.7 kB||Adobe PDF||Request a copy|
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