Skip to main content
Top

2017 | OriginalPaper | Chapter

4. Theory of the Elastica and a Selection of Its Applications

Activate our intelligent search to find suitable subject content or patents.

search-config
loading …

Abstract

The theory of the elastica is discussed in this chapter. In addition to classical buckling problems, several applications of this theory to rod-like bodies adhering to rigid substrates are discussed.

Dont have a licence yet? Then find out more about our products and how to get one now:

Springer Professional "Wirtschaft+Technik"

Online-Abonnement

Mit Springer Professional "Wirtschaft+Technik" erhalten Sie Zugriff auf:

  • über 102.000 Bücher
  • über 537 Zeitschriften

aus folgenden Fachgebieten:

  • Automobil + Motoren
  • Bauwesen + Immobilien
  • Business IT + Informatik
  • Elektrotechnik + Elektronik
  • Energie + Nachhaltigkeit
  • Finance + Banking
  • Management + Führung
  • Marketing + Vertrieb
  • Maschinenbau + Werkstoffe
  • Versicherung + Risiko

Jetzt Wissensvorsprung sichern!

Springer Professional "Technik"

Online-Abonnement

Mit Springer Professional "Technik" erhalten Sie Zugriff auf:

  • über 67.000 Bücher
  • über 390 Zeitschriften

aus folgenden Fachgebieten:

  • Automobil + Motoren
  • Bauwesen + Immobilien
  • Business IT + Informatik
  • Elektrotechnik + Elektronik
  • Energie + Nachhaltigkeit
  • Maschinenbau + Werkstoffe




 

Jetzt Wissensvorsprung sichern!

Footnotes
1
These developments are discussed at length in Bolza’s marvelous textbook [30].
 
2
The interested reader is referred to the works of Bigoni et al. [26], Maddocks and his collaborators [169, 215, 224226] and Majidi and his coworkers [219, 220, 268, 269] for discussions of, and references to, these results.
 
3
We shall give a prescription for this quantity later on in the related context of more general rod theories (cf. Eqns. (5.​36)3, (5.​37), and (7.​98)3).
 
4
As usual, for ease of exposition and without loss of generality, we assume that there is at most one such point.
 
5
For additional details on this matter, see [263, 264] and Exercises 1.​3 and 1.​4
 
6
A translation of Euler’s original work [106] is readily available and was published by Oldfather et al. [254].
 
7
Discussions on how to calculate this constant can be found in [172, 175].
 
8
Our emphasis of the key role played by the material momentum balance law in specifying the adhesion boundary condition is heavily influenced by the works [217, 219, 220, 264, 292].
 
9
See the papers [116, 117, 217, 219, 220, 290, 291, 364] and references therein.
 
10
See Eqn. (4.6).
 
11
For background on elliptic integrals and functions, Byrd and Friedman’s classic handbook [41] and Lawden’s concise textbook [200] are recommended. Integrals of the form (4.70) can also be evaluated using symbolic manipulation packages such as MATHEMATICA.
 
12
See Example 288.50 for the integral \(\int _{\psi }^{ \frac{\pi }{ 2} } \frac{d\theta } {\sqrt{a+b\sin \left (\theta \right )}}\) where \(b > \left \vert a\right \vert > 0\) in [41].
 
13
See Example 288.00 for the integral \(\int _{\psi }^{ \frac{\pi }{ 2} } \frac{d\theta } {\sqrt{a+b\sin \left (\theta \right )}}\) where a > b > 0 in [41].
 
14
Eqn. (4.131) can also be inferred from [32, Eqn. (2.​6)].
 
15
As noted earlier, for background on elliptic integrals and functions, the handbook [41] and the textbook [200] are recommended.
 
16
Referring the reader to [8, 163, 265, 375] for further details, it is known that a constant moment is not necessarily conservative.
 
17
Our manipulations of Π f are inspired by related work in a recent paper by Farjoun and Neu [108].
 
18
These methods are discussed in Section 9.​3 of Chapter 9
 
19
The contribution of ρ 0 f to this expression follows from Eqn. (4.139) with some minor modifications to one of the limits of integration.
 
20
Alternatively, the adhesion may be represented as a surface potential by also adding W ad to Π. This is accomplished by eliminating W ad in the second integrand and adding it to the first integrand.
 
21
Compatibility conditions of the form (4.152) for adhesion problems can be found in [219] and [318] and for problems where the rod passes through a sleeve, as in the elastica arm scale, in [27, 32]. They express the restrictions that variations in \(\theta \left (\gamma ^{\pm }\right )\) and γ are not always independent.
 
22
If the rod were extensible, then \(\left [\!\left [\mathbf{n} \cdot \mathbf{r}^{'}\right ]\!\right ]_{\gamma }\) would be due to the jump in the stretch of the centerline across the discontinuity. For examples where this situation arises, see [181] and [218].
 
23
Further background on Legendre’s treatment of the second variation can be found in the superb texts by Bolza [30] and Gelfand and Fomin [113].
 
24
Our definition of the conjugate point differs from the traditional definition as the latter applies to the case where the rod is clamped at both of its ends.
 
25
See, in particular, [113, Theorem 3 in Section 26]. Choosing w(0) = 0 implies that the boundary term J 2 defined in Eqn. (4.176) will vanish.
 
26
Gelfand and Fomin’s proof in [113] pertains to the fixed-fixed case. It requires some minor modifications to deal with the fixed-free case of interest here and these modifications are outlined in [289].
 
27
That is, the problem of a terminally loaded fixed-free strut.
 
28
This example is adopted from [219]. It is the simplest illustrative example of a buckling problem featuring adhesion that we could find.
 
29
This is equivalent to the classical result for the buckling load of a fixed-free strut.
 
30
An analytic expression, featuring Airy functions, for w(ξ) can be established for Eqn. (4.191)3 when θ  = −90.
 
31
Additional perspectives on buckling can be found in Section 5.​17 of Chapter 5. We also refer the reader to the seminal text by Timoshenko and Gere [345, Chapter 2].
 
32
The interested reader is referred to the works of Eshelby [102, Page 142] and Kienzler and Herrmann [182, 183] for discussions on material forces in the context of Bernoulli-Euler beam theory.
 
33
As can be seen from Section 9.​3.​2, the variations used to establish the corner condition (9.​25) correspond to varying γ. For further details on calculus of variations problems of this type see [30, Section 10].
 
Literature
8.
go back to reference Alexander, J.C., Antman, S.S.: The ambiguous twist of Love. Quarterly of Applied Mathematics 40 (1), 83–92 (1982/83) Alexander, J.C., Antman, S.S.: The ambiguous twist of Love. Quarterly of Applied Mathematics 40 (1), 83–92 (1982/83)
16.
go back to reference Autumn, K., Sitti, M., Liang, Y.A., Peattie, A.M., Hansen, W.R., Sponberg, S., Kenny, T.W., Fearing, R., Israelachvili, J.N., Full, R.J.: Evidence for van der Waals adhesion in gecko setae. Proceedings of the National Academy of Sciences 99 (19), 12,252–12,256 (2002). URL http://dx.doi.org/10.1073/pnas.192252799 Autumn, K., Sitti, M., Liang, Y.A., Peattie, A.M., Hansen, W.R., Sponberg, S., Kenny, T.W., Fearing, R., Israelachvili, J.N., Full, R.J.: Evidence for van der Waals adhesion in gecko setae. Proceedings of the National Academy of Sciences 99 (19), 12,252–12,256 (2002). URL http://​dx.​doi.​org/​10.​1073/​pnas.​192252799
26.
go back to reference Bigoni, D., Bosi, F., Misseroni, D., Dal Corso, F., Noselli, G.: New phenomena in nonlinear elastic structures: from tensile buckling to configurational forces. In: D. Bigoni (ed.) Extremely Deformable Structures, pp. 55–135. Springer-Verlag, Vienna (2015). URL http://dx.doi.org/10.1007/978-3-7091-1877-1_2 Bigoni, D., Bosi, F., Misseroni, D., Dal Corso, F., Noselli, G.: New phenomena in nonlinear elastic structures: from tensile buckling to configurational forces. In: D. Bigoni (ed.) Extremely Deformable Structures, pp. 55–135. Springer-Verlag, Vienna (2015). URL http://​dx.​doi.​org/​10.​1007/​978-3-7091-1877-1_​2
30.
go back to reference Bolza, O.: Lectures on the Calculus of Variations, third edn. Chelsea, New York (1973) Bolza, O.: Lectures on the Calculus of Variations, third edn. Chelsea, New York (1973)
31.
go back to reference Born, M.: Untersuchungen über die Stabilität der elastischen Linie in Ebene und Raum, unter verschiedenen Grenzbedingungen. Dieterichsche Universitäts-Buchdruckerei, Göttingen (1906)MATH Born, M.: Untersuchungen über die Stabilität der elastischen Linie in Ebene und Raum, unter verschiedenen Grenzbedingungen. Dieterichsche Universitäts-Buchdruckerei, Göttingen (1906)MATH
34.
41.
go back to reference Byrd, P.F., Friedman, M.D.: Handbook of Elliptic Integrals for Engineers and Scientists, Die Grundlehren der mathematischen Wissenschaften, vol. 67. Springer-Verlag, New York (1971). Second edition, revised Byrd, P.F., Friedman, M.D.: Handbook of Elliptic Integrals for Engineers and Scientists, Die Grundlehren der mathematischen Wissenschaften, vol. 67. Springer-Verlag, New York (1971). Second edition, revised
106.
go back to reference Euler, L.: Methodus Inveniendi Lineas Curvas Maximi Minimive Proprietate Gaudentes, sive Solutio Problematis Isoperimetrici Lattissimo Sensu Accepti: Additamentum 1 De Curvis Elasticis. Leonhardi Euleri Opera Omnia, Series prima (Opera mathematica), Vol. XXIV, Auctoritate et impensis Societatis Scientiarum Naturalium Helveticae. Orell Füssli, Zürich (1952). An English translation of this work can be found in [254]. Euler, L.: Methodus Inveniendi Lineas Curvas Maximi Minimive Proprietate Gaudentes, sive Solutio Problematis Isoperimetrici Lattissimo Sensu Accepti: Additamentum 1 De Curvis Elasticis. Leonhardi Euleri Opera Omnia, Series prima (Opera mathematica), Vol. XXIV, Auctoritate et impensis Societatis Scientiarum Naturalium Helveticae. Orell Füssli, Zürich (1952). An English translation of this work can be found in [254].
113.
go back to reference Gelfand, I.M., Fomin, S.V.: Calculus of Variations. Prentice-Hall, Englewood Cliffs, N. J. (1964)MATH Gelfand, I.M., Fomin, S.V.: Calculus of Variations. Prentice-Hall, Englewood Cliffs, N. J. (1964)MATH
121.
go back to reference Goriely, A.: The Mechanics and Mathematics of Biological Growth. Springer-Verlag, New York (2017)MATH Goriely, A.: The Mechanics and Mathematics of Biological Growth. Springer-Verlag, New York (2017)MATH
168.
go back to reference Hess, W.: Ueber die Beigung und Drillung eines unendlich dünnen elastischen Stabes mit zwei gleichen Widersänden, auf dessen freies Ende eine Kraft und ein um die Hauptaxe ungleichen Widerstandes drehendes Kräftepaar einwirkt. Mathematische Annalen 25 (1), 1–38 (1885). URL http://dx.doi.org/10.1007/BF01446419 Hess, W.: Ueber die Beigung und Drillung eines unendlich dünnen elastischen Stabes mit zwei gleichen Widersänden, auf dessen freies Ende eine Kraft und ein um die Hauptaxe ungleichen Widerstandes drehendes Kräftepaar einwirkt. Mathematische Annalen 25 (1), 1–38 (1885). URL http://​dx.​doi.​org/​10.​1007/​BF01446419
172.
go back to reference Israelachvili, J.R.: Intermolecular and Surface Forces: With Applications to Colloidal and Biological Systems (Colloid Science), second edn. Academic Press, San Diego (1992) Israelachvili, J.R.: Intermolecular and Surface Forces: With Applications to Colloidal and Biological Systems (Colloid Science), second edn. Academic Press, San Diego (1992)
182.
go back to reference Kienzler, R., Herrmann, G.: Mechanics in Material Space: With Applications to Defect and Fracture Mechanics. Springer-Verlag, Berlin (2000)CrossRefMATH Kienzler, R., Herrmann, G.: Mechanics in Material Space: With Applications to Defect and Fracture Mechanics. Springer-Verlag, Berlin (2000)CrossRefMATH
200.
go back to reference Lawden, D.F.: Elliptic Functions and Applications, Applied Mathematical Sciences, vol. 80. Springer-Verlag, New York (1989) Lawden, D.F.: Elliptic Functions and Applications, Applied Mathematical Sciences, vol. 80. Springer-Verlag, New York (1989)
213.
go back to reference Love, A.E.H.: A Treatise on the Mathematical Theory of Elasticity, fourth edn. Cambridge University Press, Cambridge (1927) Love, A.E.H.: A Treatise on the Mathematical Theory of Elasticity, fourth edn. Cambridge University Press, Cambridge (1927)
226.
go back to reference Manning, R.S., Rogers, K.A., Maddocks, J.H.: Isoperimetric conjugate points with application to the stability of DNA minicircles. Proceedings of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences 454 (1980), 3047–3074 (1998). URL http://dx.doi.org/10.1098/rspa.1998.0291 Manning, R.S., Rogers, K.A., Maddocks, J.H.: Isoperimetric conjugate points with application to the stability of DNA minicircles. Proceedings of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences 454 (1980), 3047–3074 (1998). URL http://​dx.​doi.​org/​10.​1098/​rspa.​1998.​0291
265.
go back to reference O’Reilly, O.M.: Intermediate Engineering Dynamics: A Unified Treatment of Newton-Euler and Lagrangian Mechanics. Cambridge University Press, Cambridge (2008)CrossRefMATH O’Reilly, O.M.: Intermediate Engineering Dynamics: A Unified Treatment of Newton-Euler and Lagrangian Mechanics. Cambridge University Press, Cambridge (2008)CrossRefMATH
269.
go back to reference O’Reilly, O.M., Peters, D.M.: Nonlinear stability criteria for tree-like structures composed of branched elastic rods. Proceedings of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences 468 (2137), 206–226 (2012). URL http://dx.doi.org/10.1098/rspa.2011.0291 O’Reilly, O.M., Peters, D.M.: Nonlinear stability criteria for tree-like structures composed of branched elastic rods. Proceedings of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences 468 (2137), 206–226 (2012). URL http://​dx.​doi.​org/​10.​1098/​rspa.​2011.​0291
298.
go back to reference Reid, W.T.: Riccati Differential Equations. Academic Press, New York (1972)MATH Reid, W.T.: Riccati Differential Equations. Academic Press, New York (1972)MATH
324.
go back to reference Silk, W., Wang, L.L., Cleland, R.E.: Mechanical properties of the rice panicle. Plant Physiology 70 (2), 460–464 (1982)CrossRef Silk, W., Wang, L.L., Cleland, R.E.: Mechanical properties of the rice panicle. Plant Physiology 70 (2), 460–464 (1982)CrossRef
345.
go back to reference Timoshenko, S.P., Gere, J.M.: Theory of Elastic Stability, second edn. McGraw-Hill, New York (1961) Timoshenko, S.P., Gere, J.M.: Theory of Elastic Stability, second edn. McGraw-Hill, New York (1961)
350.
go back to reference Truesdell, C.: The Rational Mechanics of Flexible or Elastic Bodies, 1638–1788. Leonhardi Euleri Opera Omnia, Series secunda (Opera mechanica et astronoca), Vol. XI, sectio secunda. Auctoritate et impensis Societatis Scientiarum Naturalium Helveticae. Orell Füssli, Zürich (1960) Truesdell, C.: The Rational Mechanics of Flexible or Elastic Bodies, 1638–1788. Leonhardi Euleri Opera Omnia, Series secunda (Opera mechanica et astronoca), Vol. XI, sectio secunda. Auctoritate et impensis Societatis Scientiarum Naturalium Helveticae. Orell Füssli, Zürich (1960)
Metadata
Title
Theory of the Elastica and a Selection of Its Applications
Author
Oliver M. O’Reilly
Copyright Year
2017
DOI
https://doi.org/10.1007/978-3-319-50598-5_4

Premium Partners