Jun 15, 2018 · The phase-field regularized CZM is applied to fitting test data of size and boundary effects in concrete. The size and boundary effects in notched and unnotched concrete beams under mode-I failure are captured.

The cohesive zone model (CZM) is a model in fracture mechanics where fracture formation is regarded as a gradual phenomenon and separation of the crack surfaces takes place across an extended crack tip, or cohesive zone, and is resisted by cohesive tractions.

This technique is called the cohesive zone material (CZM) model. The interface surfaces of the materials can be represented by a special set of interface elements or contact elements, and a CZM model can be used to characterize the constitutive behavior of the interface.

Jun 15, 2020 · A three-linear CZM is proposed based on the microscopic failure mechanism of the delamination in composite laminates. Bridging stress is experimentally obtained by J-integral method and implemented into the new CZM using a user-subroutine UMAT.

Feb 1, 2022 · Cohesive zone model (CZM) has been extensively applied in numerical simulation of interfacial fracture behaviors such as composite delamination and fracture of adhesive joints. Accurate and efficient identification of CZM parameters signifies an important research topic to enable reliable analysis and design of these structures.

Cohesive zone model (CZM) approach has been used to model the medial layer dissection. Gasser and Holzapfel [10] implemented the CZM to model the arterial layer dissection and showed that the obtained gap-displacement vs load/width curves were in good agreement with the experimental measurements [8].

Feb 10, 2020 · The objective of this paper is to develop the implicit integration scheme and calibration method for a recently developed cohesive zone model (CZM), for improved predictive capabilities in interlaminar delamination. The concept of string-based CZM is briefly introduced.

Apr 25, 2018 · A phase-field regularized cohesive zone model (CZM) was recently proposed for both brittle fracture and cohesive failure within the framework of the unified phase-field damage theory.

Dec 1, 2023 · In this study, utilizing relatively refined meshes, we present a novel Cohesive Zone Model (CZM) to predict delamination propagation precisely and reliably in composite laminates under static loads. This finite element analysis consists to define elements at the interface between two composite plates and an interface damage law.

For more information about cohesive zone materials, see Cohesive Zone Material (CZM) Model in the Theory Reference and Subroutine userCZM (Creating Your Own Cohesive Zone Material) in the Programmer's Reference. 4.21.1. Exponential Cohesive Zone Material for Interface Elements and Contact Elements.