Cohesive zone modelling and the fracture process of structural tape
2016 (English)In: Proceedia Structural Integrity, ISSN 2452-3216, Vol. 2, 235-244 p.Article in journal (Refereed) Published
Structural tapes provide comparable toughness as structural adhesives at orders of magnitude lower stresses. This is potentially useful to minimize the effects of differences in thermal expansion in the joining of mixed materials. The strength properties are modelled using the cohesive zone model. Thus, a cohesive zone represents the tape, i.e. stresses in the tape are transmitted to the substrates through tractions determined by the separations of the surfaces of substrates. This simplification allows for structural analysis of large complex structures. The relation between the traction and the separation is measured experimentally using methods based on the path independence of the J-integral. Repeated experiments are performed at quasi-static loading. A mixed mode cohesive law is adapted to the experimental data. The law is implemented as a UMAT in Abaqus. Simulations show minor thermal distortions due to thermal loading and substantial structural strength in mechanical loading of a mixed material structure.
Place, publisher, year, edition, pages
Elsevier, 2016. Vol. 2, 235-244 p.
Mixed material joint, structural strength, FEA, J-integral method
Research subject Technology
IdentifiersURN: urn:nbn:se:his:diva-12733DOI: 10.1016/j.prostr.2016.06.031ISI: 000387976800030OAI: oai:DiVA.org:his-12733DiVA: diva2:950724
21st European Conference on Fracture, ECF21, 20-24 June 2016, Catania, Italy
FunderÅForsk (Ångpanneföreningen's Foundation for Research and Development), 14-312
"Open Access funded by European Structural Integrity Society"2016-08-022016-08-022017-01-09Bibliographically approved