Design of Machine and Structural PartsA fully developed and very practical presentation of the subject of form design of machine components is provided in this book, including how to recognize what form or shapes cause what stress patterns and how to apply the information to an overall design. Techniques are presented that guide the design engineer to the correct kind of element to use without the need of calculations; how to choose shapes that produce efficient stress patterns. Also included is a brief review of strength/design procedures; the nature of efficient and inefficient stress patterns are covered, general principles of component design, optimizing strength-to-weight ratios, considerations for buckling and impact and the design of joints. |
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Page 54
... neutral axis y = distance from the neutral axis to the point where the bending stress is required ( see Fig . 5-2 ) We let the maximum value of y = ymax = c Then , the maximum bending stress at the given section is Omax = Mc I = M ( 1 ...
... neutral axis y = distance from the neutral axis to the point where the bending stress is required ( see Fig . 5-2 ) We let the maximum value of y = ymax = c Then , the maximum bending stress at the given section is Omax = Mc I = M ( 1 ...
Page 70
... axial load ( F ) of 8000 lbf through the neutral axis coupled with a bending moment ( M ) about the neutral axis of the cross section . The magnitude u 0x = 72 lbf / in2 ( a ) 0x 70 TENSION , COMPRESSION , AND BENDING.
... axial load ( F ) of 8000 lbf through the neutral axis coupled with a bending moment ( M ) about the neutral axis of the cross section . The magnitude u 0x = 72 lbf / in2 ( a ) 0x 70 TENSION , COMPRESSION , AND BENDING.
Page 73
... neutral axis . Summing moments about the base of the cross section in Figure 5-17c , we have x [ ( 2 ) ( { ) ( 1 ) ] + [ ( { { { ) ( 2.75 ) ] The neutral axis is ( 1.5 The bending moment is [ ( 2 ) ( { ) ] + [ { { { { ] = 1.35 in 1.35 ) ...
... neutral axis . Summing moments about the base of the cross section in Figure 5-17c , we have x [ ( 2 ) ( { ) ( 1 ) ] + [ ( { { { ) ( 2.75 ) ] The neutral axis is ( 1.5 The bending moment is [ ( 2 ) ( { ) ] + [ { { { { ] = 1.35 in 1.35 ) ...
Contents
INTRODUCTION TO FORM DESIGN | 1 |
EFFICIENT AND INEFFICIENT STRESS PATTERNS | 27 |
DESIGNING FOR RIGIDITY | 36 |
Copyright | |
13 other sections not shown
Common terms and phrases
avoirdupois bending moment bending stress bh³ body bolt cantilever beam compression Considerations of Stress contact stress contact surface cross section cross-sectional area crowned tooth cylinders deflection diameter efficient Engineering Considerations equations example flow of force flux force flow free-body diagram geometry given Hertz Hertz contact stress hole inch inefficient stress patterns inertia joint elements joule Juvinall k₁ k₂ keyway kilogram lbf/in length load distribution material maximum stress McGraw-Hill membrane analogy meter modulus of elasticity moment of inertia neutral axis newton newton/meter² normal stress notch plate portion principle R₁ R₂ ratio relative stiffness rigid rivet round bar shape refinement shear stress shown in Figure shows spline spot contact spring constant spring model sprocket steel Stiffeners Strain strap strength Strength of Materials strength-to-weight stress concentration stress distribution tensile tensile stress tension thread torque transverse transverse-shear tube uniform shear uniform stress