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- W77327294 abstract "The complex phenomena involved in combined blast and fragment loading and thesubsequent response of the loaded structure are the main reasons for the limited knowledgewithin this area.In order to increase the knowledge of the effects of combined blast and fragment loading of areinforced concrete beam, numerical simulations were conducted in the hydrocode ANSYSAUTODYN 3D. Since simulations of blast and fragment loading may place different, andsometimes conflicting, demands on the numerical model, the study presented in this paperwas preceded by the work of calibrating and validating the numerical model. This preliminarywork is briefly described.A few cracks to which the elongation of the rear face of the beam was localized were formedin the case of blast loading alone, while the number of flexural cracks in the cases wherefragments were involved was numerous. The increased number of flexural cracks in the casesof fragment impacts may affect the energy-absorbing capacity positively.In the simulations involving fragment impacts the damage also consisted of local damage, i.e.craters on the front face of the beam, scabbing cracks at the rear of the beam, and direct shearcracks close to the supports. Since most damage caused by the fragment impacts occurredvery early in the response (within 0.25 ms), the fragment impacts may have highly influencedthe response in the case of combined loading since the load-carrying capacity of the beammay have been seriously decreased.It can be concluded that the damage caused by combined blast and fragment loading wasmore severe than if adding the damages caused by the blast and fragment loading treatedseparately, indicating a synergy effect in combined loading." @default.
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- W77327294 date "2008-01-01" @default.
- W77327294 modified "2023-09-27" @default.
- W77327294 title "Simulations of blast and fragment impacts on reinforced concrete" @default.
- W77327294 hasPublicationYear "2008" @default.
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