torsion of circular shafts

... of inertia of area polar moment of inertia of area centroidal polar moment of inertia of area stress concentration factor; radius of gyration of area; spring sti¤ness length e¤ective length of ... Thermal Stresses 63 CHAPTER Torsion 75 3.1 Introduction 75 3.2 Torsion of Circular Shafts a b c d e f 76 Simplifying assumptions 76 Compatibility 77 Equilibrium 77 Torsion formulas 78 Power transmission ... Torsion 478 c Bending 479 13.1 13.2 13.3 13.4 APPENDIX A Review of Properties of Plane Areas A.1 First Moments of Area; Centroid A.2 Second Moments of Area 488 487 487 a Moments and product of...

Ngày tải lên: 09/03/2016, 10:22

... cross-section of the shaft The solid circular shaft of Figure 16.2 has a length L and radius a in the cross-section Figure 16.2 Torsion of a solid circular shaft 369 Torsion of solid circular shafts ... the analysis of the preceding section to the uniform torsion of thin-walled opensections of any cross-sectional form Figure 16.17 Torsion of an angle section Torsion of circular shafts and thin-walled ... length of the shaft A circular bar of a ductile material usually fails by breaking off over a normal cross-section, as shown in Figure 16.7 Figure 16.7 Failure of torsion of a circular bar of ductile...

Ngày tải lên: 08/04/2014, 11:29

... understood than that of the torsion of a noncircular section, the application of a membrane analogy to the torsion of non -circular sections considerably simplified the stress analysis of the latter ... and the value of the maximum shear stress f for the equilateral triangle of Figure 20.7 Figure 20.7 Equilateral hiangle Torsion of non -circular sections 502 Solution The equations of the three ... Torsion of non -circular sections 512 Now Vol = = G O J = Tp = GBJ Tp = 2rcR3~,,J3 x ~RR~T,,/(~C~) and x 2lrR3rYp/(3G8) therefore where T, is the fully plastic torsional moment of resistance of...

Ngày tải lên: 08/04/2014, 11:29

... 19.2 Element of a circular plate Takmg moments about the outer circumference of the element, (Mr + 6M,) (r + 6r) 69 - M, r6q - 2M, 6r sin 6q - F r 6q6r = 462 Lateral deflections of circular plates ... p Figure 19.6 Portion of circular membrane Let w = out -of- plane deflection at any radius r u = membrane tension at a radius r t = thickness of membrane Large deflection of plates 477 Resolving ... solution This method of solution, which involves the use of data sheets, is based on a power series solution of the fundamental equations governing the large deflection theory of circular plates 480...

Ngày tải lên: 08/04/2014, 11:28

... obtained by superimposing the coefficients of stiffness of the elemental stiffness matrices of equations (23.6) and (23.7), into a system stiffness matrix of pigeon holes, as shown by equation (23.8): ... loads of the figure at (c) and, hence, the resulting bending moments 4, To obtain the final values of nodal bending moments, the bending moments of condhon (1) must be superimposed with those of ... Matrix methods of structural analysis 610 c = cosa s =sina A = cross-sectional area I = second moment of area of the element's cross-section I = elemental length E = Young's modulus of elasticity...

Ngày tải lên: 08/04/2014, 11:28

... Synthetic table of survey data of experimental results of drilled shafts under static load test in HCMC area and comparision with a number of research works of foreign authors Work of Present thesis ... Determination of axial resistance factors of drilled shafts according to soil base strength On the basis of analysis results of statistical characteristics of resistance bias factor (λR) of the four ... PROPOSAL OF RESISTANCE FACTORS OF DRILLED SHAFTS ACCORDING TO SOIL BASE STRENGTH IN HO CHI MINH CITY 4.1 Selection and proposal of target reliability index for drilled shafts design The selection of...

Ngày tải lên: 02/07/2014, 20:32

... to the lack of calcification on histology Conclusion Torsion of intraperitoneal fat is a rare but well recognised cause of acute abdominal pain, often mimicking more common causes of an acute ... significance, with a review of the surgical pathology of appendices epiploicae Br J Surg 1950, 37(148):464-466 Polukhin SILetemin GGPovorozniuk VS: Torsion of epiploic appendages of the parietal peritoneum ... Perry RRHawksley CA: Torsion of an isolated intra-abdominal fat appendage: rare cause of abdominal pain Mil Med 1988, 153(11):572-573 Harrigan AH: Torsion and inflammation of the appendices epiploicae...

Ngày tải lên: 11/08/2014, 17:21

... sonography in the diagnosis of ovarian torsion Fertil Steril 2000, 73:1047-1050 Born C, Wirth S, Stäbler A, Reiser M: Diagnosis of adnexal torsion in the third trimester of pregnancy: a case report ... suspicion of adnexal torsion MRI is a potential alternative, as it can demonstrate signs of hemorrhagic infarction [5] Laparoscopic management of a non-obstetric emergency in the third trimester of ... Laparoscopic management of a nonobstetric emergency in the third trimester of pregnancy Surg Endosc 2007, 8:1344-1348 Adnexal torsion is rare in the second trimester of pregnancy and exceptional...

Ngày tải lên: 11/08/2014, 19:21

... are also necessary to initiate torsion Suggested factors include intense peristalsis of stomach, duodenum or Page of (page number not for citation purposes) Journal of Medical Case Reports 2008, ... N: Gallbladder torsion: case report and review of 245 cases reported in the Japanese literature J Hepatobiliary Pancreat Surg 1999, 6:418-421 Yeh H, Weiss M, Gerson C: Torsion of the gallbladder: ... 109/litre, with a neutrophil count of 10.3 × 109/litre The rest of her blood test results were entirely normal, including liver function tests An ultrasound scan of her abdomen was organised and...

Ngày tải lên: 11/08/2014, 21:22

... moments and forces Ec = modulus of elasticity of concrete under short-term load, psi Eci = modulus of elasticity of concrete at age ti, psi Es = modulus of elasticity of reinforcement, assumed to ... the upper portion of the slab thickness, with a minimum cover of in from the top of the slab and in from the bottom of the slab (top of the subgrade) Adjacent sheets or rolls of welded wire reinforcement ... = inside radius of tank, ft rd = inside radius of dome, ft ri = averaged maximum radius of curvature over a dome imperfection area with a diameter of 2.5 r d h d , ft t = age of concrete at time...

Ngày tải lên: 24/10/2014, 17:26

... features; • Geological setting of the site; • Details of the field exploration, such as number of borings, location of borings, and depth of borings; • A general description of the subsoil conditions ... circumferential force per unit of height of wall caused by the effective prestressing, lb (N) Ph = circumferential force per unit of height of wall caused by the external pressure of soil, groundwater, ... combined with flexible waterstops; • Restraint of shrinkage and creep of concrete; • Sequence of application of circumferential prestressing; • Banding of prestressing for penetrations as described...

Ngày tải lên: 24/10/2014, 17:26

... Asst Prof Koh Cheng Gee, Prof Philip R LeDuc and Prof Benoit Ladoux who provided the experimental expertise cited in this thesis, and my main supervisor Prof Lim Chwee Teck for his support of my ... understanding of cell migration This was achieved by studying the dynamics of circular dorsal ruffles (CDR), an actin-based structure often seen in growth-factor stimulated migrating cells The presence of ... found that the appearance of CDRs is often accompanied by the disappearance of actin-rich stress fibers While the generation of CDRs can been attributed to the activation of the Rac, stress fibers...

Ngày tải lên: 09/09/2015, 18:51

... interpretation of the finally developed vortex structures of a circular JICF Note how the “side-arms” of the vortex loops merged with one of the counter rotating vortices 79 5.4 Detail sketches of the ... aim of evaluating the feasibility of utilising non -circular jet geometries as means of flow control as well as enhancing combustion However, the evolution and the topological structures of non -circular ... schematic of the PIV procedures is shown in Figure 2.6 24 Chapter : Flow Visualization of Circular Jet in a Cross Flow: Effects of Jet Shear Layer Thickness Chapter Flow Visualization of Circular...

Ngày tải lên: 17/09/2015, 17:19

... Effect of number of holes Effect of hole size Effect of structure aspect ratio v It was found that the position of a single hole (diameter of 200 nm), whether at the center or at the side (at ¼ of ... Calculation of magnetic field across the conductor 54 3.6 Conclusion 56 CHAPTER EFFECT OF HOLE POSITION 58 4.1 Design of the experiment 58 4.2 Effect of the central hole 65 4.3 Effect of the side ... reconfiguration of NiFe rectangle Fig 1.4: Evolution of four domain closure pattern of a 3µm x 3µm island Fig 1.5: Evolution of a seven domain closure pattern with crosstie inclusion of 3µm x 3µm...

Ngày tải lên: 05/10/2015, 19:03

... END EFFECTS OF CIRCULAR CYLINDER ON ITS WAKE AT REYNOLDS NUMBER OF O(104) XIA HUANMING (B.Eng., NUAA) A THESIS SUBMITTED FOR THE DEGREE OF MASTER OF ENGINEERING DEPARTMENT OF MECHANICAL ENGINEERING ... range of 40 to 160 The effects of the control cylinders at higher Reynolds numbers remain unknown The objectives of the present research are to study the effects of the end-conditions of the circular ... form of slightly speeding up of the flow near the cylinder ends To further the understanding of the mechanism of the Transverse Control Cylinder Technique, the velocity profile upstream of the...

Ngày tải lên: 05/10/2015, 21:22

... thickness ratios of stepped circular plate = h2 R ω natural frequency of uniform circular plate ω0 natural frequency of reference uniform circular plate ωs natural frequency of stepped circular plate ... (radiants) viii ρ density of the fluid (kg/m3) τ thickness ratio of uniform circular plate = τ0 thickness ratio of reference uniform circular plate = τ1 thickness ratios of stepped circular plate = h1 ... acceleration (m/sec2) h thickness of uniform circular plate (m) h0 thickness of reference uniform circular plate (m) h1 thickness of annular sub-plate (m) h2 thickness of core circular sub-plate (m) k...

Ngày tải lên: 22/10/2015, 21:14

... Research Center The Evolution of Circulars Copyright © 2011 The Nielsen Company Confidential and proprietary Digital is officially pervasive 82% 93% of Americans online of Americans with mobile phones ... goals Role of Circular Diagnose segment response What they did Profit Who Won the Week? Shopper Dept by Dept Display ID other factors & “score the store” Online 24 The Evolution of Circulars Copyright ... friendly 29 The Evolution of Circulars Copyright © 2011 The Nielsen Company Confidential and proprietary Retailers interested in a consistent set of issues 30 The Evolution of Circulars Copyright...

Ngày tải lên: 05/12/2016, 17:38

... difference between the resistance of a single shaft and that of a group of shafts; The resistance of the underlying strata to support the load of the shaft group; The effects of constructing the shaft(s) ... lower portion of the shaft The value of is often considered to vary as a function of Su Values of for drilled shafts are recommended as shown in Equations and 3, based on the results of back-analyzed, ... removal of 10-124 should be given to increasing the shaft diameter or increasing the number of shafts casing during installation of the rebar cage and concrete placement, construction of battered shafts...

Ngày tải lên: 29/09/2013, 12:20

... context of the members of staff means and includes the spouse of the member/retired member of the bank's staff and the children, parents, brothers and sisters of the member/retired member of the ... deposits of Managing Director of the bank as above shall be payable only during the period of his tenure as Managing Director 6.4 Banks, with the permission of their Board, may offer higher rate of ... No List of Other Circulars from which instructions relating to Interest Rates on Rupee Deposits have also been consolidated in the Master Circular Subject Para No Para No of the of the Circular...

Ngày tải lên: 15/03/2014, 01:20

... T.A (1995) Comparison of and limits of accuracy for statistical analyses of vibrational and electronic circular dichroism spectra in terms of correlations to and predictions of protein secondary ... natural deconvolution of circular dichroism curves of proteins Protein Eng 4, 669–679 ´ Dousseau, F & Pezolet, M (1990) Determination of the secondary structure content of proteins in aqueous ... error of all analyses are determined with Ôn À 1Õ degrees of freedom in PLS-1, and Ôn À (s À 1)Õ degrees of freedom for simultaneous methods, where n is the number of spectra and s is the number of...

Ngày tải lên: 16/03/2014, 18:20