calculation of beam formwork

... required side dimension b of the square cross section assuming L = 2.5 m and σallow = 12 MPa Include the the effect of the weight of the beam and assume the specific weight of the wood is γ = 5.5 ... the top and bottom of the beam will be in the ratio 4:3, respectively 450 mm 30 mm A simple beam AB supports A B a uniform load q that L = 14m includes the weight of the 1800 mm beam (see figure) ... wood beam ABC of square q = 1.5 kN/m cross section is supported at A b and B and has an overhang b BC (see figure) A uniform load L = 2.5m L = 2.5m of intensity q = 1.5 kN/m acts on the beam...

Ngày tải lên: 22/12/2013, 14:16

... the ratio of the peak counts to the number of photons emitted by the source and it will depend on the photon energy and the source-detector-geometry Application MCNP4C2 for calculation of peak ... Journal of Science, Mathematics - Physics 23 (2007) 9-14 101 Fig.1 The confguration of the HP Ge (GMX) detector Relating to the physical dimensions of the above detector the thickness of the dead ... of cm The plexyglass plate is located in front of the detector on it’s axis at the source-detector distance of 2.95 cm The results of modeling calculations are shown in table together with the...

Ngày tải lên: 13/02/2014, 04:20

... Proportion x of Cs Mass proportion x of V Fig Calculated melting curve and eutectic point of binary alloys Fe1-xVx and Cr1-xCsx Table Comparison of calculated Lindemann’s melting temperatures Tm(K) of ... center of the bcc are localized in an elementary cell Hence, the total number of atoms in an elementary cell is Then if on average s is atomic number of type and (2 - s) is atomic number of type ... 5) the mean energy of the crystal consisting of N lattice cells is given by 2 E = ∑ ε q = ∑ N sM 1ω q u1q + (2 − s ) M ω q u q q q 2 (6) where, M1, M2 are the masses of atoms of types and 2, respectively...

Ngày tải lên: 14/03/2014, 13:20

... N.V Hung et al / VNU Journal of Science, Mathematics - Physics 24 (2008) 223-230 potential parameters characterizing interaction of each pair of atoms Numerical calculations have been carried ... Ni or by Al Here the mass of dopant Ni is close to the one of Cu (host), then the forbidden zone is small, but the mass of dopant Al is more different from the one of Cu (host), then the forbidden ... magnitudes of the vibrational function of Cu atoms for Cu doped by Ni or by Al atom in the optic branch ( ω > ωmax ) Here the vibrations of dopants Ni and Al are localized at l = 0, and the mass of dopant...

Ngày tải lên: 14/03/2014, 13:20

... et al / VNU Journal of Science, Mathematics - Physics 24 (2008) 125-131 126 Procedure for calculation of Morse potential of Diamond crystals The potential energy ϕ (rij ) of two atoms i and j ... known already [13,16,18,21] Application to calculation of anharmonic correlated effective potential in XAFS Figure shows Fourier transform magnitudes of XAFS of Sn (Diamond), measured at 77K and 300K ... Conclusions A new procedure for calculation of Morse potential parameters for Diamond crystals has been developed and the obtained results are applied to calculation of anharmonic and harmonic potential...

Ngày tải lên: 14/03/2014, 13:20

... performance of FMM on GRAPE In this paper we describe our new formulation to speed up far field force calculation – a significant calculation part of FMM on GRAPE Remaining parts of the paper ... evaluation of it takes rather big fraction of the overall calculation time [10] If we can convert a set of potential values into a set of pseudoparticles at marginal calculation cost, force from those ... Qj is charge of pseudoparticle, ri = (ri, φ, θ) is position of physical particle, γij is angle between ri and position vector Rj of the j -th pseudoparticle [14] Implementation of the FMM on...

Ngày tải lên: 22/03/2014, 11:20

... Deflections of beams Figure 13.1 Longitudinal and principal centroidal axes for a straight beam Figure 13.2 Displacements of the longitudinal axis of the beam Consider a short length of the unstrained beam, ... section of a beam to another Where El is constant along the length of a beam, - E l - d4v dz4 dF - = -w dz (13.7) As an example of the use of equation (13.4), consider the case of a uniform beam ... one-quarter of the way along the bridge, is given by 11w 6EIA ,,(I +F) where I is the second moment of area of the section of the beams (Cambridge) Deflection of beams 338 13.16 Two equal steel beams...

Ngày tải lên: 08/04/2014, 11:27

... equations of state, or from shock-compression experiments Another outcome of the MD results is the equation of state (EOS), which is often unavailable at high temperature and high pressure In this calculation, ... Molecular Dynamics Calculation of Critical Point of Nickel 11 In Eq (1), D is the total dissociation energy, rε is the equilibrium distance, and b is a constant, with values of 0.4205 eV, 0.278 ... change form the Molecular Dynamics Calculation of Critical Point of Nickel 13 liquid–gas saturation lines (binodes), as will be seen in the next section The peak of the two saturation lines is the...

Ngày tải lên: 06/05/2014, 08:54

... transient functions of time and of distance " The theory of alternating functions of time is given in Theory and Calculation of Alternating Current Phenomena." Transient functions of time are studied ... 29 Self-excitation of direct-current generator: the effect of the magnetic saturation curve Derivation of the general equations of the building up of the shunt Calculations of numerical example ... discussion of its design PAGE 74 76 of the oscillating current generator Discussion of equations: frequency, current, power, ratio of transformation 79 52 Calculation of numerical example of a generator...

Ngày tải lên: 04/06/2014, 12:34

... λ > Şen and Bayramov Journal of Inequalities and Applications 2011, 2011:113 http://www.journalofinequalitiesandapplications.com/content/2011/1/113 Page of s Proof To prove this, it is enough ... w (π , λ) + λω(π , λ) = (13) By Theorem 1.1, the set of eigenvalues of boundary-value problem (1)-(5) coincides with the set of real roots of Equation 13 Let q1 = q2 = p2 p1 π /2 |q(τ )|dτ and ... Bayramov: On calculation of eigenvalues and eigenfunctions of a Sturm-Liouville type problem with retarded argument which contains a spectral parameter in the boundary condition Journal of Inequalities...

Ngày tải lên: 20/06/2014, 22:20

... evaluation of the influence of jitter (as well of other levels of noise and their combinations) in the performance of the PDA and HNRSr would require extensive tests and is out of the scope of this ... spite of using estimated values for the pulse amplitudes Both facts can be explained by the presence, in any pulse of the signal, of the decaying tails of previous pulses This summation of tails ... implementation of (28) was performed by setting a sampling frequency of 22050 Hz, a fundamental frequency of 150 Hz (yielding 147 samples per period), and M = 300, to produce an approximate of seconds of...

Ngày tải lên: 21/06/2014, 20:20

... the case of multiuser MIMO That algorithm uses a hierarchical structured beamforming codebook derived through a smart partitioning operation of a DFT beamforming codebook The number of levels ... and the use of local codebooks to implement progressive beamforming vector refinement are the main subjects of this paper A formal definition of a local codebook, desirable properties of local codebooks, ... the complexity of our implementation of the Boccardi approach We compare the performance of the different progressive refinement approaches at an average SNR of 20 dB as a function of increasing...

Ngày tải lên: 21/06/2014, 20:20

... (d) is estimated by (3) at lead (d) The result of the calculation, in any of the formulas (2) or (4), is the percentage of myocardium under the risk of necrosis as the AMI progresses The computational ... Where, Qdur, Rdur: duration of, respectively, Q-wave and of R-wave [millisecond] Qamp, Ramp: maximum peak of, respectively, Q-wave and of R-wave [mV] Samp: maximum peak of S-wave [mV] Average processing ... the quantity of myocardial area under safe conditions This last one, of course, reveals the efficiency of the medical treatment It should be pointed out that particular conditions of the ischemia...

Ngày tải lên: 21/06/2014, 22:20

... the convergence of the computation, in all cases, to the desired value Theorem Assume the use of (11) for the calculation of the successive values of λh (k) For any initial value of λh (0), λ∗ ... level of accuracy is on the order of log2 ηC (39) Proof We begin with the maximum possible range of values for λ∗ , which is [0, ηC] Because of Corollaries and 2, h with each iteration one end of ... Here are the theorems on monotonic convergence of the proposed algorithm Theorem Assume the use of (11) for the calculation of the successive values of λh (k) If the initial value chosen for λh...

Ngày tải lên: 22/06/2014, 22:20

... least amount of work needed to fill the holes with earth A unit of work corresponds to transporting a unit of earth by a unit of ground distance We have investigated the performance of this metric ... COMPARISON OF THE SIMULATION SPS WITH REAL MEASUREMENTS In order to justify the use of the ray-tracing tool for performance analyses of the SPS-based approach, verification of the accuracy of the ... database of the measured spectra at the points of interest (e.g., set of grid points over the layout) This is the training phase which essentially yields a more sophisticated radio-map of the building...

Ngày tải lên: 22/06/2014, 23:20

... series of parallel symposia devoted to the application of thermodynamic calculations, held under the umbrella of major national organisations These included the AIME symposium on the Calculation of ... Definition of Enthalpy and Heat Capacity 3.2.2 Enthalpy of Formation 3.2.3 Hess's Law 3.2.4 Kirchhoff's Law 3.3 The Second Law of Thermodynamics 3.3.1 The Gibbs-Helmholtz Equation 3.3.2 Calculation of ... Approximation 7.5 Role of Lattice Vibrations 7.5.1 Interaction of Ordering and Vibrational Entropy 7.5.2 Kinetic Development of Ordered States 7.6 Integration of Ordering into Phase Diagram Calculations...

Ngày tải lên: 29/06/2014, 09:20

... ⎠ acc g c dL convection In case of vertical flow in the pipeline, the loss of energy is essential due to friction and changing of kinetic energy With assumption of isothermal stable flow and little ... concerning the change of potential energy ⎜ ⎟ = ⎝ dL ⎠ el g c fρυ ⎛ dp ⎞ - component concerning the effect of friction ⎜ ⎟ = ⎝ dL ⎠ f 2g c d ρυdυ ⎛ dp ⎞ - component concerning the change of kinetic energy ... kPa p2: output pressure, kPa d: diameter of pipeline, m γ g : gas density, kg/m3 (6) (7) • T: temperature of fluid flow, K • Zav: averaged coefficient of compressibility • f: Moody friction coefficient...

Ngày tải lên: 22/07/2014, 10:21

... LQM) The software has been developed using the Microsoft Visual Basic 6.0 The main form - the IsoBED Calculator- gives a choice between IsoBED calculation and DVHs analysis modules IsoBED Calculation ... DV-constraints provided by IsoBED for prostate case Results IsoBED Calculation Figure shows an example of IsoBED calculation for the case of prostate cancer and lymph node treatment The screen is constituted ... the software through which different types of evaluations for prostate-pelvis, head & neck and lung cases can be performed On the right side of the screen there is a window where the patient of...

Ngày tải lên: 10/08/2014, 10:21

... Since calculation of the sums is independent on the calculation of shared(v, v'), these calculations can be done serially as shown in the algorithm below, thereby reducing the time usage of shared(T, ... the intersection sizes of all pairs of subtrees of T and T' which runs in time O(n + |V||V'|) and space O(|V||V'|) We will assume that the size of each subtree F of T and G of T', i.e |F| and |G|, ... running time of the algorithm is O(n + |V||V'|) and space usage is O(|V||V'|) Calculating the sizes of all subtree leaf sets All of the above algorithms make use of the sizes of the leaf sets of the...

Ngày tải lên: 12/08/2014, 17:20