Weitere Artikel dieser Ausgabe durch Wischen aufrufen
Russian translation published in Mekhanika Kompozitnykh Materialov, Vol. 47, No. 1, pp. 133–150, January-February, 2011.
This paper presents results obtained using a two-way coupled multiscale model capable of predicting the mechanical response of viscoelastic heterogenous materials subjected to dynamic and quasi-static loadings. The model can account for the two major energy dissipation mechanisms in composites: viscoelasticity and crack evolution at multiple time and length scales. There are many applications that would benefit from the level of complexity of this model. For example, protective devices are submitted to impacts and therefore need to dissipate a great amount of energy to be effective. By designing such structures with the aid of two-way coupled multiscale models that take into account important microstructural variables and different dissipation mechanisms, one can reduce the amount of laboratory experiments and thus minimize the overall cost of design. In this paper, a brief description of the two-way coupled multiscale model developed is given and some example problems are discussed in order to demonstrate its capabilities.
Bitte loggen Sie sich ein, um Zugang zu diesem Inhalt zu erhalten
Sie möchten Zugang zu diesem Inhalt erhalten? Dann informieren Sie sich jetzt über unsere Produkte:
J. D. Eshelby, “The determination of the elastic field of an ellipsoidal inclusion, and related problems,” in: Proc. Roy. Soc. London, Ser. A. Math. Phys. Sci. (1934–1990), 241, No. 1226, 376–396, 10.1098/rspa.1957.0133.
Z. Hashin, “Theory of mechanical behavior of heterogeneous media,” Appl. Mech. Rev., 17, No. 1, 1–9 (1964).
D. H. Allen and C. R. Searcy, “A micromechanical model for a viscoelastic cohesive zone,” Int. J. Fract., 107, No. 2, 159–176 (2001). CrossRef
D. H. Allen and C. R. Searcy, “A micromechanically-based model for predicting dynamic damage evolution in ductile polymers,” Mech. Mater., 33, No. 3, 177–184 (2001). CrossRef
W. G. Knauss, “Delayed failure — the Griffith problem for linearly viscoelastic materials,” Int. J. Fract., 6, No. 1, 7–20 (1970). CrossRef
R. M. Christensen, “A rate-dependent criterion for crack growth,” Int. J. Fract., 15, No. 1, 3–21 (1979). CrossRef
F. Costanzo and D. H. Allen, “A continuum mechanics approach to some problems in subcritical crack propagation,” Int. J. Fract., 63, No. 1, 27–57 (1993). CrossRef
F. V. Souza, Multiscale Modeling of Impact on Heterogeneous Viscoelastic Solids with Evolving Microcracks. Ph.D, University of Nebraska–Lincoln (2009).
F. V. Souza and D. H. Allen, “Multiscale modeling of impact on heterogeneous viscoelastic solids containing evolving microcracks,” Int. J. Numer. Meth. Eng., 82, No. 4, 464–504 (2010).
D. H. Allen, “Damage evolution in laminates,” in: R. Talreja (ed.), Damage Mechanics of Composite Materials, Composite Materials Series. Vol. 9, Elsevier, Amsterdam, (1994), pp. 79–114.
D. H. Allen, D. C. Lo, and M. A. Zocher, “Modelling of damage evolution in laminated viscoelastic composites,” Int. J. Dam. Mech., 6, No. 1, 5–22 (1997). CrossRef
M. L. Phillips, C. Yoon, and D. H. Allen, “A computational model for predicting damage evolution in laminated composite plates,” J. Eng. Mater. Technol., 121, No. 4, 436–444 (1999). CrossRef
- Finite-element modeling of damage evolution in heterogeneous viscoelastic composites with evolving cracks by using a two-way coupled multiscale model
F. V. Souza
L. S. Castro
S. L. Camara
D. H. Allen
- Springer US
in-adhesives, MKVS, Zühlke/© Zühlke