Interaction of inter- and intralaminar damage in scaled quasi-static indentation tests: Part 2 – Numerical simulation

Abstract

General rightsThis document is made available in accordance with publisher policies. Please cite only the published version using the reference above. Full terms of use are available: http://www.bristol.ac.uk/pure/about/ebr-terms shown that the models with the capability to simulate multiple matrix cracks best predict the key aspects of barely visible damage of composite laminate during quasi-static loading.

An integrated numerical model for investigating guided waves in impact-damaged composite laminates

“…'solid') elements, while shell elements were used for the surrounding region where damage was not expected to occur. The solid-element part was created using a high-fidelity modelling approach proposed in [28].…”

“…Whilst numerical modelling techniques for predicting low-velocity impact damage are quite well advanced [26][27][28], modelling techniques that combine these simulations with the analysis of ultrasonic guided-wave propagation have not been so far put forward in the literature. Such an integrated modelling capability is imperative in the development of NDT and SHM systems for composites, since it completes the virtual characterisation process from impact to guided-wave propagation using numerical simulation, thus saving considerable time in comparison with experimental studies.…”

Modelling low velocity impact induced damage in composite laminates

“…7d with extensive delamination that matched the detected result by X-ray radiography. Sun et al (2016) also employed cohesive zone elements to predict the quasi-static indentation tests for carbon fibre composites. The inserted cohesive zone elements, especially in angled ply, well captured the matrix cracking and splitting.…”

Experimental–numerical study on minimizing impact induced damage in laminated composites under low-velocity impact

“…The contact between the specimen and impactor was modeled using general contact algorithm available in ABAQUS/Explicit by defining an element set contacting both external and internal faces of the specimen, to ensure that the impactor interacts with interior elements after failure of exterior elements. The contact formulation was defined based on penalty method with friction coefficient of 0.3 between the specimen and the impactor [5].…”

“…However, different damage mechanisms such as: matrix cracking, fiber breakage and fiber/matrix debonding affect load bearing capacities and operational life of these materials [1][2][3][4][5][6]. Hence, it is very important to investigate composite materials behavior and corresponding failure modes under various loading conditions.…”