Identification of parameters of cohesive elements for modeling of bonded joints of epoxy composites using Araldite 2021 and Spabond 345 adhesives

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23520%2F12%3A43916220" target="_blank" >RIV/49777513:23520/12:43916220 - isvavai.cz</a>
Alternative codes found
RIV/49777513:23210/12:43916220
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Identification of parameters of cohesive elements for modeling of bonded joints of epoxy composites using Araldite 2021 and Spabond 345 adhesives
Original language description
In this work, two basic modes I resp. II of the joint failure are desribed as failures under tensile and shear loading, respectively. DCB (Double Cantilever Beam) test results in failure I, ENF (End Notched Flexure) test in failure II. These tests were used for the identification of the critical strain energy release rates which are the parameters of the cohesive crack model. MSC.Marc system includes so-called interface elements for the cohesive zone modeling which can have linear or exponential or linear-exponential behaviour. These elements require knowledge of the Critical Opening Displacement (COD) which relates to the crack head location. The COD value was identified using an optimization algorithm from the comparison of the load-displacement curves of the experiments and their numerical simulations. The exponential beavior of the elements was assumed in the simulations.
Czech name
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Czech description
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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