hiện hộp thoại parameters of rc element để chọn tải trọng
Autodesk robot structural analysis P.4 Tính toán thiết kế bê tông cốt thép
... R2011-2012: Design Provided Reinforcement of RC elements RC Beam Design R2013: Design Provided Reinforcement of RC elements Hộp thoại chọn tải trọng Chọn tải trọng hai cách: Nguyễn Văn Thiệp ... hợp tải trọng Có thể chọn tải trọng đơn lẻ tổ hợp Simple: tải trọng đơn lẻ (hộp thoại bên trái) Nhấn tên tải trọng, nhấn nút hai mũi tên để đưa vào danh sách tính toán Combin.: tổ hợp tải trọng ... nút , hộp thoại để chọn tải trọng tổ hợp tải trọng Có thể chọn tải trọng đơn lẻ tổ hợp Nguyễn Văn Thiệp Autodesk Robot Structural Analysis – Tính toán cốt thép cho cấu kiện 25 o o o Simple: tải...
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Văn bản hướng dẫn thiết kế máy P1 potx
... the line of action of the force Mathematically, Moment of a force = F × l where F = Force acting on the body, and l = Perpendicular distance of the point and the line of action of the force (F) ... lines of action of two equal and opposite parallel forces is known as arm of the couple The magnitude of the couple (i.e moment of a couple) is the product of one of the forces and the arm of the ... Moment of Force Force It is the turning effect produced by a force, on the body, on which it acts The moment of a force is equal to the product of the force and the perpendicular distance of the...
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Văn bản hướng dẫn thiết kế máy P2 pps
... types of brasses, depending upon the proportions of copper and zinc This is fundamentally a binary alloy of copper with zinc each 50% By adding small quantities of other elements, the properties of ... order of diminishing ductility) are mild steel, copper, aluminium, nickel, zinc, tin and lead Note : The ductility of a material is commonly measured by means of percentage elongation and percentage ... carbon content up to a maximum of 1.5% The carbon occurs in the form of iron carbide, because of its ability to increase the hardness and strength of the steel Other elements e.g silicon, sulphur,...
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Văn bản hướng dẫn thiết kế máy P3 pot
... easy flow of metal 3.7 Mechanical Working of Metals The mechanical working of metals is defined as an intentional deformation of metals plastically under the action of externally applied forces The ... piercing and controls the size of the hole, as the billet is forced over it * For complete details, please refer to Authors' popular book ‘A Text Book of Workshop Technology’ 60 n A Textbook of ... not only to the diameter of a circular shaft, but it is also used to designate any external dimension of a part The term hole refers not only to the diameter of a circular hole, but it is also...
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Văn bản hướng dẫn thiết kế máy P4 pdf
... external system of forces or loads act on a body, the internal forces (equal and opposite) are set up at various sections of the body, which resist the external forces This internal force per unit ... factor of safety are for static loading 4.14 Selection of Factor of Safety The selection of a proper factor of safety to be used in designing any machine component depends upon a number of considerations, ... points : The reliability of the properties of the material and change of these properties during service ; The reliability of test results and accuracy of application of these results to actual...
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Văn bản hướng dẫn thiết kế máy P5 pptx
... Distance of N.A from the bottom of the link, yt = y = 1.2 a mm Distance of N.A from the top of the link, yc = a – 1.2 a = 1.8 a mm Eccentricity of the load (i.e distance of N.A from the point of application ... and the total angle of twist is equal to the sum of the angle of twists of the two shafts Mathematically, total angle of twist, T l1 T l2 + C1 J1 C2 J If the shafts are made of the same material, ... diameter of 100 mm and CD has a diameter of 87.5 mm If the angle of twist is the same for each section, determine the length of each section Find the value of the applied torque and the total angle of...
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Văn bản hướng dẫn thiết kế máy P6 pptx
... value of 20 kN and a maximum value of 50 kN Determine the diameter of bar by taking a factor of safety of 1.5, size effect of 0.85, surface finish factor of 0.9 The material properties of bar ... Textbook of Machine Design Example 6.4 A bar of circular cross-section is subjected to alternating tensile forces varying from a minimum of 200 kN to a maximum of 500 kN It is to be manufactured of ... reversed axial load of 180 kN Find the diameter of the rod for a factor of safety of Neglect column action The material has an ultimate tensile strength of 1070 MPa and yield strength of 910 MPa The...
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Văn bản hướng dẫn thiết kế máy P7 pot
... Length of the plate; and b = Width of the plate The values of the coefficient k2 are given in Table 7.2 Table 7.2 Values of coefficients k 1, k 2, k and k Material of the cover plate Type of Circular ... uniformly distributed over the section of the walls The effect of the restraining action of the heads at the end of the pressure vessel is neglected Fig 7.1 Failure of a cylindrical shell When a thin ... l t = = = = = Intensity of internal pressure, Internal diameter of the cylindrical shell, Length of the cylindrical shell, Thickness of the cylindrical shell, and σt1 Circumferential or hoop stress...
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Văn bản hướng dẫn thiết kế máy P8 pdf
... the diameter of flanges, diameter of bolt circles and number of bolts should be identical and that difference should consist in variations of the thickness of flanges and diameter of bolts only ... Design of Pipes The design of a pipe involves the determination of inside diameter of the pipe and its wall thickness as discussed below: Inside diameter of the pipe The inside diameter of the ... value of dc, the value of n may be obtained from equations (i) and (ii) The number of bolts should be even because of the symmetry of the section = The circumferential pitch of the bolts is given...
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Văn bản hướng dẫn thiết kế máy P9 pps
... 9.25 First of all, let us find the centre of gravity (G) of the rivet system Let x = Distance of centre of gravity from OY, y = Distance of centre of gravity from OX, 326 n A Textbook of Machine ... – d p1 Number of rows The number of rows of rivets for the circumferential joint may be obtained from the following relation : ηc = Number of rows = Total number of rivets Number of rivets in ... whole length of the plate Efficiency Riveted 9.14 Efficiency of a Riveted Joint The efficiency of a riveted joint is defined as the ratio of the strength of riveted joint to the strength of the un-riveted...
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Văn bản hướng dẫn thiết kế máy P10 pot
... strikes an arc by touching the work of base metal with the electrode The base metal in the path of the arc stream is melted, forming a pool of molten metal, which seems to be forced out of the pool ... plate of 0.7 m width welded to a structure of similar material by means of two parallel fillet welds of 0.112 m length (each) is subjected to an eccentric load of 4000 N, the line of action of which ... by the product of the throat thickness and length of weld Let t = Throat thickness (BD), t C s = Leg or size of weld, Reinforcement = Thickness of plate, and D 45º s l = Length of weld, From Fig...
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Văn bản hướng dẫn thiết kế máy P11 doc
... Textbook of Machine Design Fig 11.10 Basic profile of the thread d = Diameter of nut; D = Diameter of bolt Fig 11.11 Design profile of the nut and bolt 11.5 Location of Screwed Joints The choice of ... size of the bolt is M 22 Ans Thickness of the arm of the bracket Let t = Thickness of the arm of the bracket in mm, and (Given) b = Depth of the arm of the bracket = 130 mm 414 n A Textbook of ... of four bolts The bolts are of size 30 mm and are equally spaced on a bolt circle diameter of 500 mm 422 n A Textbook of Machine Design Determine : The distance of the load from the centre of...
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Văn bản hướng dẫn thiết kế máy P12 pps
... diameter of socket, Diameter of spigot or inside diameter of socket, Outside diameter of spigot collar, Thickness of spigot collar, Diameter of socket collar, Thickness of socket collar, Mean width of ... of the diameter of rod (d ) are as follows : Outside diameter of sleeve, d = 2.5 d Diameter of enlarged end of rod, d = Inside diameter of sleeve = 1.25 d Length of sleeve, L = 8d Thickness of ... Diameter of bolt, Diameter of the enlarged end of bolt, Thickness of cotter, and Width of cotter The various modes of failure of the cotter foundation bolt are discussed as below: 454 n A Textbook of...
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Văn bản hướng dẫn thiết kế máy P13 pptx
... diameter of the shaft or inner diameter of the hub, then Outside diameter of hub, D =2d 486 n A Textbook of Machine Design Length of hub, L Pitch circle diameter of bolts, D1 Outside diameter of flange, ... = Diameter of shaft or inner diameter of hub, D = Outer diameter of hub, d1 = Nominal or outside diameter of bolt, D1 = Diameter of bolt circle, n = Number of bolts, tf = Thickness of flange, ... = Circumference of hub × Thickness of flange × Shear stress of flange × Radius of hub D π D2 = × τc × t f = π D × t f × τc × 2 The thickness of flange is usually taken as half the diameter of...
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Văn bản hướng dẫn thiết kế máy P14 pptx
... torque of 10 000 N-m The shaft is made of 45 C steel having ultimate tensile stress of 700 MPa and a ultimate shear stress of 500 MPa Assuming a factor of safety as 6, determine the diameter of the ... cylindrical shaft made of steel of yield strength 700 MPa is subjected to static loads consisting of a bending moment of 10 kN-m and a torsional moment of 30 kN-m Determine the diameter of the shaft using ... diameter of a hollow shaft is 2/3 rd of its external diameter Compare the strength and stiffness of the shaft with that of a solid shaft of the same material [Ans 1.93 ; 2.6] 25 The shaft of an...
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Văn bản hướng dẫn thiết kế máy P15 potx
... Thickness of the vessel; Diameter of the screw; Cross-section of beam A; Diameter of pins C and D; Diameter of pins E and F; Diameter of pins G and H; and Cross-section of the supports of pins ... determined by parallelogram law of forces The line of action of RF passes through the intersection of W and P and also through F The direction of RF depends upon the direction of W and P (iv) When W and ... exerting a maximum force of 400 N at a distance of rd length of the handle from its free end, find : Diameter of the handle, Cross-section of the lever arm, and Diameter of the journal The permissible...
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Văn bản hướng dẫn thiết kế máy P16 pot
... the line of stroke, θ = Angle of inclination of the crank from inner dead centre, r = Radius of crank, l = Length of connecting rod, and n = Ratio of length of connecting rod to radius of crank ... tensile force (b) an axial compressive force (c) a tangential force (d) any one of these Slenderness ratio is the ratio of (a) maximum size of a column to minimum size of column (b) width of column ... 3000 mm2 Its distance of centre of gravity from top of the flange, y1 = 20 / = 10 mm Area of web, a2 = (120 – 20) 20 = 2000 mm2 Its distance of centre of gravity from top of the flange, Fig 16.2...
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Văn bản hướng dẫn thiết kế máy P17 pps
... against a force of 75 kN at a speed of 300 mm / The screw has a single square thread of mm pitch on a major diameter of 40 mm The coefficient of friction at screw threads is 0.1 Estimate power of the ... Force required at the rim of handwheel Let P1 = Force required at the rim of handwheel We know that the inner diameter or core diameter of the screw, dc = – p = 75 – = 69 mm 648 n A Textbook of ... shall take larger value of the factor of safety ∴ Factor of safety = 5.58 say Ans Dimensions of the nut Let n = Number of threads in contact with nut, and h = Height of nut = p × n Assume that...
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Văn bản hướng dẫn thiết kế máy P19 pptx
... Width of face Length of hub = The length of hub should not be less than 100 mm for 19 mm diameter spokes and 138 mm for 22 mm diameter of spokes Thickness of rim = mm for all sizes A single row of ... instead of arms The thickness of the solid web is taken equal to the thickness of rim measured at the centre of the pulley face 720 n A Textbook of Machine Design (ii) The cross-section of the ... of the pulley centre line from the nearest bearing is 350 mm µ = 0.25 Determine : Diameter of the pulley ; Width of the belt assuming thickness of 10 mm ; Diameter of the shaft ; Dimensions of...
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Văn bản hướng dẫn thiết kế máy P20 potx
... Diameter of Wire and Area of Wire Rope The following table shows the diameter of wire (dw) and area of wire rope (A) for different types of wire ropes : Table 20.10 Diameter of wire and area of wire ... an undersize belt (d) none of these The wire ropes make contact at (a) bottom of groove of the pulley (b) sides of groove of the pulley (c) sides and bottom of groove of the pulley This heavy duty ... lay ropes In these types of ropes, the direction of twist of wires in the strands is opposite to the direction of twist of the stands, as shown in Fig 20.8 (a) Such type of ropes are most popular...
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