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CZM

CZM: Cohesive Zone Model / Kohäsivzonenmodell
Definition:Cohesive Zone Model.
Explanation:The damage in cohesive model is described to be proportional of the effective to the maximum separation by complete material failure. Description of cleavage failure by means of a CZM. The dissipated energy of the cohesive elements serves as a failure criterion.
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Diagram:

Description of the traction separation law and application of cohesive elements.
SFB-Link:CZM can be applied for modeling the damage and embrittlement in all advanced high strength steels (→AHSS) including twinning induced plasiticity (→TWIP) steels.
References:M. Prechter, P. Leiva Ronda et al. Simulation of fracture in heterogeneous elastic materials with cohesive zone models. Int J Fract.2011