bending transverse vibration of uniform beams

... 15.5 More general case of plastic bending In the case of the rectangular and I-section beams treated so far, the neutral axis of bending coincided with an axis of symmetry of the cross-section ... the axis of bending, andy,, distance of the extreme fibre from the axis of bending From equation (15.19) the plastic section modulus of a beam is ZP = Y, -( A + Y2 ) is the (15.21) Values of Z, ... therefore Plastic bending of mild-steel beams 356 [ M,, = o,bgh - t) + -tw , (h - 2fx I (15.13) Figure 15.6 Fully plastic moment of an I-section beam In the case of elastic bending we defined...

Ngày tải lên: 08/04/2014, 11:28

... quasi-3D theory for vibration and buckling of functionally graded sandwich beams, Composite Structures, 2015, Vol 119, p 1-12 [5] Şimşek, M., & Kocatürk, T., Free and forced vibration of a functionally ... since the date of invention of FG materials by Japanese scientists in 1984 A combination of strong and light weight ceramics with traditional ductile metals remarkably enhances the vibration characteristics ... the vibration characteristics of the structures The investigations on the dynamic response of FG beams [5-8] in recent years have shown that the dynamic deflections of an FG metal-ceramic beam...

Ngày tải lên: 08/06/2016, 13:00

... Pro/MECHANICA, assign aluminum as the wing material, and fix the largest end of cross section Run the modal analysis, and obtain modes of vibration ...

Ngày tải lên: 19/01/2014, 05:20

... thermal vibration of fcc crystals 27 The purpose of this work is to study the correlation effects in atomic vibrations of fcc crystals in XAFS, i.e., to develop a new procedure for calculation of ... new procedure for study of DebyeWaller and of the atomic correlated vibration in XAFS theory Acknowledgements One of the authors (N V Hung) thanks Prof J J Rehr (University of Washington) for very ... dependence of our calculated correlation function DCF C R of Cu and Ni is illustrated in Figure and their ratio with function u2 and Figure 3: Temperature dependence of the calculated DCF C R of Cu...

Ngày tải lên: 05/03/2014, 14:20

... 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 ... than the one of Cu, then the amplitude changes of the atomic vibration of Cu are smaller than the one for Cu doped by Ni Fig 2a shows the calculated atomic vibration u2 (l = 2) of Cu and its ... amplitude changes of atomic vibration of Cu atoms in optic branch (b) for Cu doped by Ni or by Al a) b) Fig Calculated phase shift (a) and amplitude changes (b) of atomic vibration of Cu atoms in...

Ngày tải lên: 14/03/2014, 13:20

... consistent Proof Since the probability of the Viterbi parse is 1, all rules of the form {VYr , VYr } → {0, 1} ¯ which appear in the parse tree have probability as well There are two possible types of inconsistencies ... an appearance of both rules of the form VYr → and VYr → cannot occur because all rules that appear in the Viterbi parse tree have probability For any r, an appearance of rules of the form VYr ... ConditionalViterbiTrain to return ⊥ in the case of not having a parse for one of the xi —this can be efficiently checked using a run of a cubic-time parser on each of the strings xi with the grammar G An...

Ngày tải lên: 17/03/2014, 00:20

... the proceeding of the reaction Such self-assembly of nanoparticles is favorable to decrease the surface energy of the system Scheme – Schematic of the process for the formation of WO3 submicrospheres ... 0.5 g of the above tungsten acid powder and g of thiourea were mixed into 30 ml distilled water After 10 of stirring, the mixture was transferred into a Teflon container with capacity of 100 ... Experimental All of the chemical reagents used in the experiment were of analytical grade The detailed synthesizing process was as follows: 10 g of Na2WO4·2H2O was resolved in 50 ml of distilled...

Ngày tải lên: 20/03/2014, 13:04

... pattern of the product, showing a chemical reaction has occurred in the process of hydrothermal treatment All of the XRD peaks of the product can be indexed to the orthorhombic structure of WO3 ... prepared by oxidation of W using hydrogen peroxide (H2O2) [35,36] In a typical synthesis, 6.5 g of W powder was dissolved into a mixed solution of 40.0 mL of H2O2 and 4.0 mL of H2O with an ice-water ... The formation process of WO3 nanosheets from W can be divided into three parts: the formation of precursor, the formation of WO3 by decomposition of WO3 Á H2O and growth of WO3 crystal nucleus...

Ngày tải lên: 20/03/2014, 13:08

... Effect of thickness h on natural vibration frequency x 10 -3 Fig Effect of thickness h on vibration amplitude - The natural vibration and forced vibration of waved composite plate and analysis of ... 1.5 2.5 3.5 4.5 Fig Effect of laminate order on natural vibration frequency Table shows the results of effect of boundary conditions and order of laminate on natural vibration frequency Table ... are extensional stiffnesses of the plate and Dij (i, j = 1, and 6) are bending stiffnesses of the corresponding flat plate ∗ Coefficients of the bending stiffness Dij of a corrugated plate are...

Ngày tải lên: 28/03/2014, 13:20

... computation of both free and forced responses The following cases of continuous systems are considered: transverse vibration of a string, longitudinal vibration of a bar, torsional vibration of a circular ... circular shaft, and transverse vibration of a beam Last, the finite element method is introduced via examples of the longitudinal vibration of a bar and the transverse vibration of a beam EQUIVALENT ... Response of an Undamped 2DOF System Solution 4.4 Forced Response of an Undamped 2DOF System Under Sinusoidal Excitation 4.5 Free Vibration of a Damped 2DOF System 4.6 Steady-State Response of a Damped...

Ngày tải lên: 08/04/2014, 11:49

... excitation of an isolated cable or groups of cables Rain/wind-induced vibrations of cables Wake galloping of groups of cables Galloping of single cables inclined to the wind Galloping of cables ... EVALUATION, AND TESTING MECHANICS OF WIND-INDUCED VIBRATIONS There are a number of mechanisms that can potentially lead to vibrations of stay cables Some of these types of excitation are more critical ... study of in-plane vibrations of complex cable networks has usually been performed by means of finite element methods because of the number of cable elements that are involved and the variability of...

Ngày tải lên: 16/06/2014, 21:54

... preparation of the manuscript PIF and AES participated in the cutting and staining of Page of the bone tissue RGR participated in the planning of the experiments, data analysis and the preparation of ... remove any effect of preparation artifact Macroscopical analysis of LDH viability staining on non-cultured bone explants, showed overall uniform cell viability Whereas viability of non-treated days ... standard deviation of surviving osteocytes was determined, resulting in a relatively questionable prediction of a uniform overall cell death Probably this result was due to the presence of remaining...

Ngày tải lên: 20/06/2014, 04:20

... Synthesis of InP/ZnS For in situ fabrication of InP/ZnS core-shell NQDs, the temperature of the growth solution of InP was lowered after a 10-min growth to 200°C Thirty milligrams of ZDC, ml of TOP, ... group [9] In the synthesis of high-quality InP or InP/ZnS NQDs in terms of size uniformity and crystallinity, a choice of an indium [In] precursor is flexible, but that of a phosphorus [P] precursor ... the molecular peak of compound at m/z = 437, and the elemental analysis of contained 65.82 wt.% C and 7.55 wt.% H, corresponding to a molecular formula of C24H33PSi3 Synthesis of indium phosphide...

Ngày tải lên: 20/06/2014, 20:20

... Process of Ministry of Education and School of Chemical Engineering & Pharmacy, Wuhan Institute of Technology, Wuhan, 430073, P R China 2Key Laboratory of Catalysis and Materials Science of the ... solution, these uniform bismuth nanospheres can be obtained under the only effect of EG (1) (2) When the amount of PVP was increased to 0.310 g (the molar ratio of repeating units of PVP to Bi 3+ ... large production of uniform bismuth nanospheres No other bismuth morphologies could be found in the whole sample The diameters of these nanospheres varied from 160 to 210 nm and most of them were...

Ngày tải lên: 21/06/2014, 06:20

... Synthesis of InP/ZnS For in situ fabrication of InP/ZnS core-shell NQDs, the temperature of the growth solution of InP was lowered after a 10-min growth to 200°C Thirty milligrams of ZDC, ml of TOP, ... group [9] In the synthesis of high-quality InP or InP/ZnS NQDs in terms of size uniformity and crystallinity, a choice of an indium [In] precursor is flexible, but that of a phosphorus [P] precursor ... the molecular peak of compound at m/z = 437, and the elemental analysis of contained 65.82 wt.% C and 7.55 wt.% H, corresponding to a molecular formula of C24H33PSi3 Synthesis of indium phosphide...

Ngày tải lên: 21/06/2014, 17:20

... diffraction peaks of Au in the XRD pattern of Au/ C–AAO are identical to those of Au–AAO [15] This indicates that the crystal structure of the Au nanoparticles Fig XRD patterns of (a) carbonized ... energy of C 1s (285.0 eV) consists of carbon Figure 3b is a TEM image of the freestanding Au/CNFs The dark spots in the image are Au nanoparticles The inset of Fig 3b is the SEM image of Au/CNTs ... region of the channel At the same time, due to the strong adhesion between the aluminol groups of AAO and the hydroxyl groups of sucrose, [21] a thin layer of sucrose might remain on the wall of...

Ngày tải lên: 21/06/2014, 20:20

... HNTs The HNT is a kind of layered aluminosilicate, associated with the chemical properties of halloysite tubule’s outermost surface with the properties of SiO2 and properties of the inner cylinder ... Nickel-filter Cu Ka radiation (k = 0.15418 nm) was used with a generator voltage of 40 kV and a current of 30 mA The morphologies of the nanotubes were characterized with a JEM-1200 EX/S 123 Nanoscale ... or the ‘‘soft’’ template methods As for the HNTs used as the templates in the present work, they might be destroyed in the HCl media because of the Al2O3 composition So the effect of the medium...

Ngày tải lên: 22/06/2014, 01:20

... orientation of the two URAs Furthermore, we include an analysis of the influence of nonoptimal design, and analytical expressions for the singular values of the LOS matrix are derived as a function of ... the quality of the array design The results are useful for system designers both when designing new systems, as well as when evaluating the performance of existing systems The rest of the paper ... on top of each other) In the next section, the entries of HLOS will be described in detail, while in the consecutive sections, the connection between the URA design and the properties of HLOS...

Ngày tải lên: 22/06/2014, 19:20

... (USQ4), thesix-node uniform strain triangle ofRef.1 with a = 1/2 (UST6), and the seven-node enhanced uniform strain triangle of Section 2.1 (EUST7) Itisclear that noneofthe uniform strain elements ... include a set of kinematic constraints The present approach is motivated by the idea that the accuracy of uniform strain elements may be improved by allowing more than a single state of uniform strain ... thereof, or any of their contractors or subcontractors The views and opinions expressed herein not necessarily state or reflect those of the United States Government, any agency thereof, or any of...

Ngày tải lên: 27/06/2014, 14:20

... diagrams of the arm ABC if it is pin connected at A and connected to a hydraulic cylinder (two-force member) BD Assume the arm and grip have a uniform weight of 1.5 lb͞in and support the load of 40 ... through centroid C of the cross section as shown in Fig a The location of C is ©yA y = = ©A 4(8)(6) - c p A 1.52 B d 8(6) - p A 1.52 B = 4.3454 in Thus, the moment of inertia of the cross section ... cross section in terms of the radius r of a beam with a circular cross section if both beams are subjected to the same internal moment which results in the same maximum bending stress a a r Section...

Ngày tải lên: 06/07/2014, 07:59