Based on the studied end eccentricities combinations for reinforced concrete columns bent in either single or double curvature mode and according to the used concrete dimensions and adopted material properties, the following conclusions maybe drawn: 1. Providing end eccentricities resulted in decrease the axial capacity proportionally with respect to the value of the end eccentricity.
On the basis of mentioned research, the following material properties were determined: ultimate tensile strength (σm), 0.2% offset yield strength (σ0.2), modulus of elasticity (E) and Charpy impact energy (CVN).
The material properties are as the following: f c ′ = 30 MPa ; E C = 25740 MPa ; f y = 400 MPa ; E s = 200000 MPa.
Material properties were also varied following experimental data.
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The two approaches used in this study yielded the following average material properties of single chondrocytes: Poisson's ratio of 0.26±0.08, instantaneous modulus of 1.06±0.82 kPa, relaxed modulus of 0.78±0.58 kPa, and apparent viscosity of 4.08±7.20 kPa s.
A parametric study was performed to illustrate the effects of key material properties (which determine the deformation following an individual impact) and processing parameters (which specify impact velocity and location).
Particular attention is paid to the following four nonlinear material properties: the critical load λc at which the structure first experiences an instability; the plastic critical load λp at which the onset of plasticity would occur (if no elastic instability occurred); the stable post-bifurcated structure of the honeycomb; and the purely elastic resilience of the nonlinear material.
The material properties utilized for this analysis are the following: Young's modulus (E = 210,,{text{GPa}}), Poisson ratio (upsilon = 0,3) and material yield stress (sigma_{y} = 280,{text{MPa}}).
The details of each specimen with respect to material properties and experimental program are described in the following subsection.
