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Design Innovation Paper

Application of Mono Leaf Spring as a Pipe Support

[+] Author and Article Information
Javad Ozmaian

P. Eng, M. Eng
10201 Southport Road SW,
Calgary, AB T2W 4X9, Canada
e-mail: javad.ozmaian@worleyparsons.com

Contributed by the Pressure Vessel and Piping Division of ASME for publication in the JOURNAL OF PRESSURE VESSEL TECHNOLOGY. Manuscript received June 27, 2013; final manuscript received April 5, 2014; published online September 4, 2014. Assoc. Editor: Kunio Hasegawa.

J. Pressure Vessel Technol 136(6), 065001 (Sep 04, 2014) (9 pages) Paper No: PVT-13-1103; doi: 10.1115/1.4027376 History: Received June 27, 2013; Revised April 05, 2014

Leaf springs are one of the oldest forms of springing that is commonly used for the suspension in wheeled vehicles. It is simply adjusted by selecting proper type or number of flat bars. In this study, we are going to show how a mono steel leaf spring can be used as a flexible pipe support in a real situation. It is a cheap and reliable method of support; specifically for the huge pipes in remote areas that maintenance could consider as a big headache. To prove this idea, we will model and test the real situation by using FEA software.

Copyright © 2014 by ASME
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References

George, E. T., 2007, “Overview of factors Contributing to Steel Spring Performance and Failure,” Int. J. Microstruct. Mater. Properties, 2(3/4), pp. 262–309. [CrossRef]
Kern, R. F., and Suess, M. E., 1979, Chapter 12 Selection of materials for heat treated springs', Steel Selection: A Guide for Improving Performance and Profits, John Wiley& Sons, New York, pp. 223–249.
Avallone, E. A., and Baumeister, T., eds., 1996, Marks' Standard Handbook for Mechanical Engineers, 10th ed., McGraw-Hill, New York.
Anil Kumar, T. N. C., and Ramesh, Ch., 2012, “Design Optimization of Leaf Spring, Malaga,” Int. J. Eng. Res. Appl., 2, pp. 2248–9622. Available at: http://www.ijera.com/papers/Vol2_issue6/DJ26759765.pdf
Roselita, F., 2012, “Steel and GFRP Beams/Heavy-Duty Vehicle Leaf Springs Under Cyclic Loading,” Ph.D. thesis, Tufts University, Medford, MA.
Thippeswamy, E., Sadashivappa, K. S., and Abdul budan, D., 2012, “Optimal Design and Analysis of Mono Leaf Composite Spring by Finite Element Analysis,” International Conference on Advances in Engineering, Science and Management (ICAESM), Nagapattinam, Tamil Nadu, India, March 30–31.
Lingaiah, K., 2003, Machine Design Handbook, McGraw-Hill, New York.
Anvil International, 2008, Pipe Hangers and Supports, Anvil International, Exeter, NH.
Andrew, R. D., 2010, Schematic of a Beam Subject to Bending, http://commons.wikimedia.org/wiki/File:Beam_3pt.gif
Caesar Intergraph version 5.3 and Solidworks/ANSYS Student edition, Intergraph, Huntsville, AL.

Figures

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Fig. 2

Contact points on the leaf spring

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Fig. 3

Dimensions of the simulated leaf spring (inches)

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Fig. 4

Fixed-fixed-free displacement profile, maximum (neg) on the right end

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Fig. 5

Fixed-free-fixed displacement profile, maximum (neg) on the sides

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Fig. 6

Fixed-free-free displacement profile, maximum (neg) on the right end

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Fig. 7

Free-fixed-free displacement profile, maximum (neg) on the ends

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Fig. 8

Oval eye with a certain gap[5]

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Fig. 9

Leaf spring manufacturing process [5]

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Fig. 10

Leaf spring for comparison

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Fig. 11

Stress profile—no over stress, max on the left

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Fig. 12

Displacement profile, max on the right

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Fig. 13

Stress Profile—no over stress, max on the left

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Fig. 14

Displacement profile, max on the right

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Fig. 15

Stress profile—no over stress, max on the left

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Fig. 16

Displacement profile, max (neg) on the right

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Fig. 17

Stress profile—no over stress, max on the left

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Fig. 18

Displacement profile, max (neg) on the ends

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Fig. 19

Stress profile - overstress, max on the middle

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Fig. 20

Displacement profile, max neg on the right

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Fig. 21

3-Point bending [9,10]

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Fig. 22

4-Point bending [9]

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Fig. 23

Caesar model, single point springing

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Fig. 24

Caesar model, double points springing

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Fig. 25

Moment vs distance profile in single spring

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Fig. 26

Moment vs distance profile in double springs

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Fig. 27

Leaf spring (middle) vs coil spring (sides) for huge size of piping

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Fig. 28

Schematic of a leaf spring under a heavy valve

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Fig. 29

OEM 25732500 /Parabolic spring for volvo

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