Pdf design of machine shaft in fatigue loading by using. Design a reliable and simple test rig to test shaft. Machine design problems gear belt mechanical scribd. Combine the bending stress and the torsional stress using the. Pdf shaft is a critical and standard component which is used normally in all. Taking the dimensions, forces and other determining factors, the. Ahmed salah abou taleb lecturer, mechanical engineering dept. Energy method of combining stresses and the fatigue failure locus name. Shear deflection due to transverse loading of short shafts. Gupta v top simpo pdf merge and split unregistered. A 600mm diameter pulley is mounted at a distance of 300mm to the right of left hand bearing and this drives a pulley directly below it with the help of belt having maximum tension of 2250 n.
Design stresses in shafts august 15, 2007 23 find the torsion in the shaft. Energy method of combining stresses and the fatigue failure. The objective of this project is to design a safe shaft given certain dimensions of gears and bearings as well as forces acting on the shaft through the gears and the effect of fillets and keys. In most real engineering problems, variation is inherent. A textbook of machine design khurmi gupta bdd uthm studocu. Imagine what sorts of problems might occur with the connections or inter. Pdf in the case of power transmission sometimes a fluctuating or repetitive load comes on drive shaft or driven shaft in working condition. Determine suitability of shaft design andor necessary size of shafting.
For example, shafts often are stepped to different diameters to accommodate bearings, gears, pulleys, etc. Download as docx, pdf, txt or read online from scribd. Problem 1 on design of shaft design of machine youtube. Design based on rigidity is to ensure that maximum deflection because of bending and maximum twist due to torsion of the shaft is within the allowable limits.
Numerical problems on shaft design 1 a shaft is supported by two bearings which are placed 1m apart. Given these primary issues, consider the remaining corresponding. Shaft design based on strengthshaft design based on strength asme d i dasme design code. This is a metal joining process which uses a nonferrous filler. Also see machine designs annual fastening, joining, and assembly. By varying the geometry of the ellipse, one can obtain the solution to fifteen other elastostatic problems. Design based on strength is to ensure that stress at any location of the shaft does not exceed the material yield stress. However, the general procedure to solve a design problem is as follows. Design of shafts and couplings mechanical design of machine elements design of shafts and couplings a line shaft rotating at 200 rpm is to transmit 20 kw power. They combine the positive timing action of gears with the flexibility.
Shaft shown drives a gear set that is transmitting 5 hp at 1750 rpm. Shaft is supported in selfaligning ball bearings and gears are both 10 pitch, 40 tooth, 20 spur gears. Shafts are designed on the basis of strength or rigidity or both. The shaft design for combined loading is most critical problem in practical. Chapter 7 shafts and shaft components lecture slides. Video lecture on problem 1 on design of shaft from design of shafts, keys and couplings chapter of design of machine for mechanical engineering students. Shaft design introduction standard diameters of shafts torsion.