Finite Element analysis of UHPFRC plates under impact loads

Author(s) : H. Othman, H. Marzouk
Paper category : Proceedings
Book title : UHPFRC 2017 Designing and Building with UHPFRC: New large-scale implementations, recent technical advances, experience and standards
Editor(s) : F. Toutlemonde & J. ResplendinoT.Ch.
Print-ISBN : 978-2-35158-166-7
e-ISBN : 978-2-35158-167-4
Publisher : RILEM Publications SARL
Publication year : 2017
Pages: 337 - 346
Total Pages : 10
Language : English

Abstract: A three-dimensional finite element analysis has been conducted to model multi-impacts on UHPFRC plates that were previously tested by the authors. A brief description of the experimental tests is provided. The numerical simulation has been performed using ABAQUS/Explicit. Concrete and reinforcing steel are represented by separate material models which are combined together to describe the behaviour of the composite RC material. Concrete Damage Plasticity (CDP) model is adapted to define UHPFRC material. The objective of this research is to assess whether the existing CDP constitutive model with adjustable parameters may be able to accurately replicate the dynamic response of UHPFRC member. Computed responses are sensitive to CDP parameters related to the tension, fracture energy, and expansion properties. The analytical results showed that the existing CDP model can predict the response and crack pattern of UHPFRC reasonably well. Instabilities of results were observed in the impact analyses that corresponding to extensive damage level of fibers bridging action stage.

Online publication : 2017
Publication type : full_text
Public price (Euros) : 0.00