Abstract
This paper presents finite element analysis considering strain rate effect of reinforced concrete members subjected to impact loading. An incremental stress-strain relationship for concrete is defined by the tangent elastic moduli considering strain rate effect, i.e., the initial elastic moduli and the maximum stress increase with the strain rate. Cracks are assumed to form when the maximum principal stress in concrete reaches the uniaxial tensile strength considering strain rate effect, and are represented by smeard crack model. The experimental specimens for verification of the analytical model are reinforced concrete slabs under impact loading, which was generated by dropping a hummer. By comparing with the experimental results, the influence of strain rate effect on the dynamic response analysis of reinforced concrete slabs is discussed.
