We compute explicitly the Γ-limit of an energy functional modeling a connected mass-spring double-chain in the limit of small separations. The point masses interact with each other through nearest neighbor potentials that have to be convex and fulfill a growth condition (e.g. modeling harmonic springs). This results in a continuous one-dimensional variational problem whose minimum approximates those of the discrete problem for large N, which is used to numerically compute the deformation under various loadings. In a second step, we use our model to numerically optimize the macroscopic distribution of material strength in the presence of stochastic loads

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Pradeep Atwal

Institut für Angewandte Mathematik, Universität Bonn, Endenicher Allee 60, 53115 Bonn, Germany

pradeep.atwal@uni-bonn.de
  1. G. Allaire: Shape Optimization by the Homogenization Method, Springer, New York (2002).https://doi.org/10.1007/978-1-4684-9286-6Google Scholar
  2. G. Allaire, E. Bonnetier, G. Francfort, F. Jouve: Shape optimization by the homogenization method, Numer. Math. 76 (1997) 27–68.https://doi.org/10.1007/s002110050253Google Scholar
  3. G. Allaire, F. Jouve: A level-set method for vibration and multiple loads structural optimization, Comput. Methods Appl. Mech. Eng. 194 (2005) 3269–3290.https://doi.org/10.1016/j.cma.2004.12.018Google Scholar
  4. W. Alt: Nichtlineare Optimierung, Vieweg, Braunschweig (2002).https://doi.org/10.1007/978-3-322-84904-5Google Scholar
  5. F. Alvarez, M. Carrasco: Minimization of the expected compliance as an alternative approach to multiload truss optimization, Struct. Multidiscip. Optim. 29 (2005) 470–476.https://doi.org/10.1007/s00158-004-0488-7Google Scholar
  6. H. Attouch: Variational Convergence for Functions and Operators, Pitman, Boston (1984).Google Scholar
  7. A. Braides: Γ-Convergence for Beginners, Oxford University Press, Oxford (2002).https://doi.org/10.1093/acprof:oso/9780198507840.001.0001Google Scholar
  8. D. Bucur, G. Buttazzo: Variational Methods in Shape Optimization Problems, Progress in Nonlinear Differential Equations 65, Birkhäuser, Basel (2005).https://doi.org/10.1007/b137163Google Scholar
  9. G. Buttazzo, M. Giaquinta, S. Hildebrandt: One-dimensional Variational Problems, Oxford University Press, Oxford (1998).https://doi.org/10.1093/oso/9780198504658.001.0001Google Scholar
  10. D. Cioranescu, P. Donato: An Introduction to Homogenization, Oxford University Press, Oxford (1999).https://doi.org/10.1093/oso/9780198565543.001.0001Google Scholar
  11. S. Conti, H. Held, M. Pach, M. Rumpf, R. Schultz: Shape optimization under uncertainty a stochastic programming perspective, SIAM J. Optim. 19 (2009) 1610–1632.https://doi.org/10.1137/070702059Google Scholar
  12. G. Dal Maso: An Introduction to Γ-Convergence, Birkhäuser, Boston (1993).https://doi.org/10.1007/978-1-4612-0327-8Google Scholar
  13. E. De Giorgi: Sulla convergenza di alcune successioni d’integrali del tipo dell’area, Rend. Mat., VI. Ser. 8 (1975) 277–294.Google Scholar
  14. G. Friesecke, R. D. James: A scheme for the passage from atomic to continuum theory for thin films, nanotubes and nanorods, J. Mech. Phys. Solids 48(6–7) (2000) 1519–1540.https://doi.org/10.1016/S0022-5096(99)00091-5Google Scholar
  15. E. D. Giorgi, T. Franzoni: Su un tipo di convergenza variazionale, Atti Accad. Naz. Lincei, VIII. Ser., Rend., Cl. Sci. Fis. Mat. Nat. 58 (1975) 842–850.Google Scholar
  16. J. M. Guedes, H. C. Rodrigues, M. P. Bendsøe: A material optimization model to approximate energy bounds for cellular materials under multiload conditions, Struct. Multidiscip. Optim. 25 (2003) 446–452.https://doi.org/10.1007/s00158-003-0305-8Google Scholar
  17. F. Jarre, J. Stoer: Optimierung, Springer, Berlin (2003).https://doi.org/10.1007/978-3-642-18785-8Google Scholar
  18. W. H. Press, S. A. Teukolsky, W. T. Vetterling, B. P. Flannery: Numerical Recipes in C, 2nd Ed., Cambridge University Press, Cambridge (1992).Google Scholar

P. Atwal. “Continuum Limit of a Double-Chain Model for Multiload Shape Optimization.” Journal of Convex Analysis 18 (2011), No. 1, 153–172. https://doi.org/10.68381/jca18008