Use of cohesive approaches for modelling critical states in fibre-reinforced structural materials

Use of cohesive approaches for modelling critical states in fibre-reinforced structural materials

Článek WoS

During the operation of structures, stress and deformation fields occur inside the materials used, which often ends in fatal damage of the entire structure. Therefore, the modelling of this damage, including the possible formation and growth of cracks, is at the forefront of numerical and applied mathematics. The finite element method (FEM) and its modification will allow us to predict the behaviour of these structural materials. Furthermore, some practical applications based on cohesive approach are tested. The main effort is devoted to composites with fibres and searching for procedures for their accurate modelling, mainly in the area where damage can be expected to occur. The use of the cohesive approach of elements that represent the physical nature of energy release in front of the crack front has proven to be promising not only in the direct use of cohesive elements, but also in combination with modified methods of standard finite elements.

During the operation of structures, stress and deformation fields occur inside the materials used, which often ends in fatal damage of the entire structure. Therefore, the modelling of this damage, including the possible formation and growth of cracks, is at the forefront of numerical and applied mathematics. The finite element method (FEM) and its modification will allow us to predict the behaviour of these structural materials. Furthermore, some practical applications based on cohesive approach are tested. The main effort is devoted to composites with fibres and searching for procedures for their accurate modelling, mainly in the area where damage can be expected to occur. The use of the cohesive approach of elements that represent the physical nature of energy release in front of the crack front has proven to be promising not only in the direct use of cohesive elements, but also in combination with modified methods of standard finite elements.

extended finite element method; fibre composites; nonlocal approaches; crack resistance

extended finite element method; fibre composites; nonlocal approaches; crack resistance

KOZÁK, V.; VALA, J.

2025

01.07.2024

MDPI

Basel

1996-1944

Materials

17

13

Švýcarská konfederace

3177-1

3177-21

21

https://www.mdpi.com/1996-1944/17/13/3177

http://hdl.handle.net/11012/249933

materials-17-03177-v2