1. Fundamentals of Machine Component Design, 4/E by Robert C. Juvinall and Kurt M. Marshek Copyright © 2006 by John Wiley & Sons, Inc. All rights reserved. Figure 12.1 (p. 470) Torsion bar springs.

2. Fundamentals of Machine Component Design, 4/E by Robert C. Juvinall and Kurt M. Marshek Copyright © 2006 by John Wiley & Sons, Inc. All rights reserved. Figure 12.2 (p. 471) Helical (coil) compression and tension springs.

3. Fundamentals of Machine Component Design, 4/E by Robert C. Juvinall and Kurt M. Marshek Copyright © 2006 by John Wiley & Sons, Inc. All rights reserved. Figure 12.3 (p. 472) Torsional stress distribution in straight versus curved torsion bars. (Note the increased stress on the inside surface of the curved bar.)

4. Fundamentals of Machine Component Design, 4/E by Robert C. Juvinall and Kurt M. Marshek Copyright © 2006 by John Wiley & Sons, Inc. All rights reserved. Figure 12.4 (p. 474) Stress correction factors for helical springs.

5. Fundamentals of Machine Component Design, 4/E by Robert C. Juvinall and Kurt M. Marshek Copyright © 2006 by John Wiley & Sons, Inc. All rights reserved. Figure 12.5 (p. 475) Helical compression spring of unequal pitch.

6. Fundamentals of Machine Component Design, 4/E by Robert C. Juvinall and Kurt M. Marshek Copyright © 2006 by John Wiley & Sons, Inc. All rights reserved. Figure 12.6 (p. 475) Conical compression coil spring.

7. Fundamentals of Machine Component Design, 4/E by Robert C. Juvinall and Kurt M. Marshek Copyright © 2006 by John Wiley & Sons, Inc. All rights reserved. Table 12.1 (p. 476) Relative Cost a of Common Spring Wire of 2-mm (0.079-in.) Diameter

8. Fundamentals of Machine Component Design, 4/E by Robert C. Juvinall and Kurt M. Marshek Copyright © 2006 by John Wiley & Sons, Inc. All rights reserved. Figure 12.7 (p. 477) Tensile strengths of various spring wire materials and diameters, minimum values [2].

9. Fundamentals of Machine Component Design, 4/E by Robert C. Juvinall and Kurt M. Marshek Copyright © 2006 by John Wiley & Sons, Inc. All rights reserved. Figure 12.8 (p. 479) Compression spring ends and corresponding spring solid-height equations. (Note: Square ends are wound with a zero helix angle.)

10. Fundamentals of Machine Component Design, 4/E by Robert C. Juvinall and Kurt M. Marshek Copyright © 2006 by John Wiley & Sons, Inc. All rights reserved. Figure 12.9 (p. 479) Special end members for coil springs.

11. Fundamentals of Machine Component Design, 4/E by Robert C. Juvinall and Kurt M. Marshek Copyright © 2006 by John Wiley & Sons, Inc. All rights reserved. Figure 12.10 (p. 480) Buckling conditions for helical compression springs. (Buckling occurs for conditions above and to the right of the curves.)

12. Fundamentals of Machine Component Design, 4/E by Robert C. Juvinall and Kurt M. Marshek Copyright © 2006 by John Wiley & Sons, Inc. All rights reserved. Figure 12.11 (p. 482) Helpful representation of information given in Sample Problem 12.1.

13. Fundamentals of Machine Component Design, 4/E by Robert C. Juvinall and Kurt M. Marshek Copyright © 2006 by John Wiley & Sons, Inc. All rights reserved. Figure 12.20 (p. 493) Conventional extension spring end hook.

14. Fundamentals of Machine Component Design, 4/E by Robert C. Juvinall and Kurt M. Marshek Copyright © 2006 by John Wiley & Sons, Inc. All rights reserved. Figure 12.21 (p. 494) The end turns with reduced diameter to decrease endhook stresses.

15. Fundamentals of Machine Component Design, 4/E by Robert C. Juvinall and Kurt M. Marshek Copyright © 2006 by John Wiley & Sons, Inc. All rights reserved. Figure 12.25 (p. 496) Multileaf semielliptic spring installed in a truck chassis.

16. Fundamentals of Machine Component Design, 4/E by Robert C. Juvinall and Kurt M. Marshek Copyright © 2006 by John Wiley & Sons, Inc. All rights reserved. Figure 12.26 (p. 497) (a) Leaf spring and (b) fatigue strength diagram for Sample Problem 12.4.

17. Fundamentals of Machine Component Design, 4/E by Robert C. Juvinall and Kurt M. Marshek Copyright © 2006 by John Wiley & Sons, Inc. All rights reserved. Figure 12.27 (p. 499) Comparison of triangular versus trapezoidal spring rates for Sample Problem 12.5. Note: k for the trapezoid is about 10 percent greater than k for the triangle.

18. Fundamentals of Machine Component Design, 4/E by Robert C. Juvinall and Kurt M. Marshek Copyright © 2006 by John Wiley & Sons, Inc. All rights reserved. Figure 12.28 (p. 500) Helical torsion spring.

19. Fundamentals of Machine Component Design, 4/E by Robert C. Juvinall and Kurt M. Marshek Copyright © 2006 by John Wiley & Sons, Inc. All rights reserved. Figure 12.29 (p. 500) Spiral torsion spring.

20. Fundamentals of Machine Component Design, 4/E by Robert C. Juvinall and Kurt M. Marshek Copyright © 2006 by John Wiley & Sons, Inc. All rights reserved. Figure 12.31 (p. 501) Types of spring washers.

21. Fundamentals of Machine Component Design, 4/E by Robert C. Juvinall and Kurt M. Marshek Copyright © 2006 by John Wiley & Sons, Inc. All rights reserved. Figure 12.32 (p. 502) Stacked Belleville washers.

22. Fundamentals of Machine Component Design, 4/E by Robert C. Juvinall and Kurt M. Marshek Copyright © 2006 by John Wiley & Sons, Inc. All rights reserved. Figure 12.34 (p. 502) Constant-force springs.