Wall response to soft impact (WARSI) & Impact loaded structures (IMPACT)

Kim Calonius, Ilkka Hakola, Simo Hostikka, Ari Kankkunen, Auli Lastunen, Arja Saarenheimo, Ari Silde, Markku Tuomala

Research output: Chapter in Book/Report/Conference proceedingChapter or book articleProfessional


An experimental set-up has been constructed for medium scale impact tests. The main objective of this effort is to provide data for the calibration and verification of numerical models of a loading scenario where an aircraft impacts against a nuclear power plant. The experiments with fluid filled missiles yield also valuable information about the release and spreading of liquid fuel in impact. This information is vital in assessing the combustion hazard of fuel, and for analytical and numerical methods which can be applied to assess the spreading and combustion of fuel spray. Instrumentation used in the tests includes for instance high-speed photography, forcetime function measurements based on accelerometry and strain gauges, and debris tracking. The main goal is to develop further the analytical method that defines the load-time function of relatively soft missile impacts. The second goal for further study is to develop and take in use numerical methods for predicting the response of reinforced concrete structures to impacts of deformable projectiles that may contain combustible liquid. The computational results were also needed in the continuous planning of the tests.

Original languageEnglish
Title of host publicationSAFIR: The Finnish Research Programme on Nuclear Power Plant Safety 2003-2006
Subtitle of host publicationFinal Report
EditorsHanna Räty, Eija Puska
PublisherVTT Technical Research Centre of Finland
Number of pages18
ISBN (Electronic)951-38-6887-7
ISBN (Print)951-38-6886-9
Publication statusPublished - 2006
MoE publication typeD2 Article in professional manuals or guides or professional information systems or text book material

Publication series

SeriesVTT Tiedotteita - Valtion Teknillinen Tutkimuskeskus


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