caa a22 4500 465741495 CHVBK 20180323111809.0 cr unu---uuuuu 170327e19900201xx s 000 0 eng 10.1007/BF00018386 doi (NATIONALLICENCE)springer-10.1007/BF00018386 Schapery R. Civil Engineering Department, Texas A&M University, 77843, College Station, TX, USA aut On some path independent integrals and their use in fracture of nonlinear viscoelastic media [Elektronische Daten] [R. Schapery] In certain cases it is possible to construct work potentials and J-like path-independent integrals for monolithic or composite nonlinear viscoelastic media. In this paper we discuss some situations in which such quantities exist and are useful in the study of quasi-static initiation and continuation of crack growth. The so-called quasi-elastic approximation and a constitutive equation in the form of a single hereditary integral provide the basis for using J or J-like integrals as fracture characterizing parameters during initiation and the early stages of crack growth. It is also shown that in some cases with significant crack growth the instantaneous crack speed can be characterized in terms of a similar path-independent integral. The problem of characterizing growth of large cracks in viscoelastic media with micro-damage is discussed briefly. Kluwer Academic Publishers, 1990 International Journal of Fracture Kluwer Academic Publishers 42/2(1990-02-01), 189-207 0376-9429 42:2<189 1990 42 10704 https://doi.org/10.1007/BF00018386 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00018386 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Schapery R. Civil Engineering Department, Texas A&M University, 77843, College Station, TX, USA aut NATIONALLICENCE 773 0- International Journal of Fracture Kluwer Academic Publishers 42/2(1990-02-01), 189-207 0376-9429 42:2<189 1990 42 10704 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer