Impact Analysis of Concrete Structural Components

Abstract

This paper presents an overview on the concrete structural components subjected to impact loading. The review includes empirical formulae, analytical models, and numerical simulations. Various empirical formulae on penetration depth, perforation, and scabbing limits as well as their ranges of application have been provided. It has been observed that the information available on the validation of these models is limited. There is wider scope to study the performance of well known empirical formulae. Penetration resistance function play an important role in any analytical model. It has been observed that the major limitation is rigid projectile assumption. There is scope to develop new/improved analytical models to represent projectile characteristics. The numerical simulation of concrete structural components subjected to impact loads is a complex phenomenon. From the review, it is observed that employing appropriate material model for concrete, equation-of-state, contact algorithm and definition of yield surface plays significant role in the accurate simulation of concrete structural components. There is ample scope to develop improved methodologies in terms of development of material models and contact algorithms, which can be employed in nonlinear explicit finite element analysis of concrete structural components subjected to impact loading.

Regulation of the influence of the structure of inorganic binders on their properties

“…It is known that both medium quality concrete [1], like highquality concrete [2] and special [3], consist of two systems: cement stone and aggregates. Therefore, the nature and completeness of the processes occurring in the volume of concrete at the contact boundary between ce ment stone and aggregate depend on many factors, and directly affect the durability of both concrete on cement [4] and slagalkali [5].…”

Local Effects of Impact into Concrete Structure

“…The most important summarizing articles on local failure calculations were published by Li [1], Kennedy [2], Teland [12], and Murthy [13]. In these papers, the most important formulae are collected, compared and the results are analysed.…”

Research into effect of complex nanomodifiers on the strength of fine-grained concrete

“…Fine-grained concretes are expedient to use for manufacturing thin-walled, densely reinforced, and other structures whose fabrication implies a constraint for the size of a filler. Such concretes are a multicomponent composition system [1] and contain both a fine-grained filler and a finely-dispersed filler in its composition, as well as Portland cement [2][3][4][5] and high-performance superplasticizers acting as deflocculants. Optimal application makes it possible to control the rheological properties of concrete admixtures.…”