## Design of machine and structural partsVery Good,No Highlights or Markup,all pages are intact. |

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Page 82

Figure 6-10 shows five cross-sectional shapes: a plate, a channel, a slotted

circular

e) are much stronger and FIGURE 6-7. Poor sections for torsional loading— open

...

Figure 6-10 shows five cross-sectional shapes: a plate, a channel, a slotted

circular

**tube**, a hollow**tube**, and a square hollow**tube**. The closed shapes (d ande) are much stronger and FIGURE 6-7. Poor sections for torsional loading— open

...

Page 84

stiffer in torsion than the open sections (a), (b), and (e), as indicated by the values

of the torsional resistance R. The volume created underneath the membrane for

the I-beam, the channel, and the slit

stiffer in torsion than the open sections (a), (b), and (e), as indicated by the values

of the torsional resistance R. The volume created underneath the membrane for

the I-beam, the channel, and the slit

**tube**would be approximately the same.Page 113

(8-28c) In a thin-walled

is [27] Tc ~ 2*r2t where r is the outer radius of the

MACHINE AND STRUCTURAL COMPONENTS Consider the helical spring ...

(8-28c) In a thin-walled

**tube**of thickness t, the critical shear stress due to torsionis [27] Tc ~ 2*r2t where r is the outer radius of the

**tube**. (8-29) 8-2 BUCKLING INMACHINE AND STRUCTURAL COMPONENTS Consider the helical spring ...

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### Contents

INTRODUCTION TO FORM DESIGN | 1 |

EFFICIENT AND INEFFICIENT STRESS PATTERNS | 27 |

DESIGNING FOR RIGIDITY | 35 |

Copyright | |

13 other sections not shown

### Common terms and phrases

avoirdupois bending stress body bolt cantilever beam Celsius compression compressive stress Considerations of Stress contact area contact stresses contact surface cross section cross-sectional area crowned tooth cylinders deflection deformation determined diameter effect efficient energy storage Engineering Considerations equations example flow of force force flow free-body diagram geometry given Hertz Hertz contact stress hole hollow shaft inch inefficient stress patterns inertia Isochromatic pattern joint elements joule Juvinall keyway kilogram lbf/in load distribution machine and structural material maximum stress membrane analogy meter3 modulus of elasticity neutral axis newton normal stress notch plate portion pressure distribution principle radius relative stiffness rigidity rivet round bar second mean solar shape refinement shear stress shown in Figure shows solid shaft splines spot contact spring constant spring model sprocket static stiffeners strength strength of materials stress concentration stress distribution tensile tensile stress threads torque transverse shear tube uniform shear uniform stress