. This fact may be attributed to the measuring limits on the physical model. Fig. 5. Frequency analysis 4 Parametric study Based on the verification, the method of wave superposition was chosen for the parametric study, which achieved better agreement
evaluate alternative EE measures, four energy retrofit scenarios were proposed and compared to the existing conditions represented with Base-Case (BC) models via simulation-based parametric study. The first energy retrofit scenario (S1) involved EE lighting
The sorption of Cs(I) and Sr(II) on bentonite and magnetite was experimentally studied and numerically simulated using surface complexation (SCM) and ion-exchange (IExM) models. The empirical system consisted of: (1) synthetic granitic water with a given ionic strength (0.1 or 0.01 NaNO3), (2) radionuclides studied (10-6M CsCl or SrCl2 . 6H2O spiked with 137Cs or 85Sr), and (3) bentonite pre-treated with the aim to remove carbonates, and magnetite as a representative of steel canister corrosion products. The parametric study covered, e.g., the influence of pH, bentonite to magnetite ratio and volume-liquid ratio on the values of selectivity coefficients and K d.
This study introduces the old design methods of eye-bars of chain bridges and compares their results to the results of numerical calculations. The failure modes of four eye-bars with different head geometries have been investigated through experiments and numerical simulations, and the effect of the geometrical build-up of the chain heads on the failure mode is provided as well. Finally as a result of numerical calculations the elastic and plastic stress distribution in the eye-bar is shown as well.
The present research work is a part of a project was a semi-active structural control technique using magneto-rheological damper has to be performed. Magneto-rheological dampers are an innovative class of semi-active devices that mesh well with the demands and constraints of seismic applications; this includes having very low power requirements and adaptability. A small stroke magneto-rheological damper was mathematically simulated and experimentally tested. The damper was subjected to periodic excitations of different amplitudes and frequencies at varying voltage. The damper was mathematically modeled using parametric Modified Bouc-Wen model of magneto-rheological damper in MATLAB/SIMULINK and the parameters of the model were set as per the prototype available. The variation of mechanical properties of magneto-rheological damper like damping coefficient and damping force with a change in amplitude, frequency and voltage were experimentally verified on INSTRON 8800 testing machine. It was observed that damping force produced by the damper depended on the frequency as well, in addition to the input voltage and amplitude of the excitation. While the damping coefficient (c) is independent of the frequency of excitation it varies with the amplitude of excitation and input voltage. The variation of the damping coefficient with amplitude and input voltage is linear and quadratic respectively. More ever the mathematical model simulated in MATLAB was in agreement with the experimental results obtained.
This paper describes the influences of some parameters relevant to biomass pyrolysis on the numerical solutions of the nonisothermal n th-order distributed activation energy model (DAEM) involved the Weibull distribution. Investigated parameters are the integral upper limit, the frequency factor, heating rate, the reaction order and the shape, scale and location parameters of the Weibull distribution. Those influences can be used for the determination of the kinetic parameters of the nonisothermal n th-order Weibull DAEM from thermoanalytical data of biomass pyrolysis.
/37 Diameter of horizontal PSH studs Concrete cover of PSH studs Design value of shear resistance for one PSH studs for one shear section Ø PSH [mm] c d [mm] V Rd , dow [kN] 25 46.5 24.6 32 50 40 40 54 56.8 3 Parametric study The practical benefits that are
too. 3 Results of the part of the parametrical study of the model with equivalent column The cross-sections of the investigated battened and laced built-up columns are given in Fig. 1a and b , respectively. Fig. 1. Cross-section of the built
lactate. The catalytic performance is dependent on the intrinsic property of the support. Ru/SiO 2 was found to be an efficient catalyst for the hydrogenation of ethyl lactate to 1,2-PDO. Parametric studies show that the reaction temperature, hydrogen
Eccentrically braced frames are well known for their capacity of dissipating seismic energy by plastic hinge formation in the so called ‘link elements’, which represent the dissipative devices of the eccentrically braced frame. The link element can be short, which means it will be mainly subjected to shear forces; long being mainly subjected to bending moment or intermediate in length subjected to a combined action of shear force-bending moment. The current study is focused on the calibration of existing experimental results with numerical finite element models of steel eccentrically braced frames with short link elements and a subsequent parametrical study considering different link lengths and multiple stiffeners along the link web panel.