Explain with neat sketch the bolts of uniform strength.
Theory
Prove that for square key equally strong in shear and crushing, ....................
Design an offset link for a load of 1000 N. Maximum permissible stress in tension for link material is 60 N/mm2. Assume b = 3t for rectangular cross section of the link.
State the composition of following materials................
i) Fe E 230 : Steel with min.Yield strength of 230N/mm2 ii ) X20Cr 18 Ni 2:Specification: It is ALLOY STEEL having Carbon 0.20% ,Chromium 18% and Nickel 2% iii )35 C 8 : steel with 0.35% carbon & 0.8% Manganese.
iv) 40 Ni 2 Cr 1 Mo 20 :Alloy Steel having 0.4% carbon,0.5% Nickel, 0.25% chromium,2.8% Molybdenum.
Design ‘‘C’’ clamp frame for a total clamping force of 20 kN............
Explain with neat sketch the stress-strain diagram for ductile material.
Explain the design procedure of bush pin type flexible coupling with neat sketch
It consist of two shafts, two key, flanges, key, pin, rubber bush, brass bush, & pin ,following are the designations of various coupling dimensions which are use for the design procedure.
Explain the design procedure of handlever with neat sketch.
A shaft 1000 mm long is supported between two bearings. A pulley of 250 mm ...........
What is stress concentration? Explain any four methods to reduce it.
Stress Concentration: Whenever a machine component changes the shape of its cross-section, the simple stress distribution no longer holds good and the neighborhood of the discontinuity is different. This irregularity in the stress distribution caused by abrupt changes of form is called stress concentration. It occurs for all kinds of stresses in the presence of fillets, notches, holes, keyways, splines, surface roughness or scratches etc.
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