Simplified Approach to Verification of Numerical Models for Deformation and Fracture Analysis of Structural Composite Subjected to High-Velocity Impact

Abstract:

Deformation and fracture analysis of the composite elements and structures under high-velocity impact is still associated with many problems. These problems are related not only to the complexity of taking into account the composite layered orthotropic structure and various failure scenarios but also to the problems of instrumented high-velocity impact tests to verify the calculation results. Different requirements for accuracy and numerical efficiency are imposed on the models and their predictive ability depending on the design stage. At the initial design stages, the model should allow one to estimate the energy absorption of the composite structure adequately. At later stages, the size of the damaged area and the fracture pattern also should be predicted with high accuracy. This article describes a simplified approach to the verification of deformation and fracture models of structural composites under high-velocity impact based on low-velocity impact test data. The model with the found parameters makes it possible to predict with satisfactory accuracy the energy absorption of the composite material.

• Periodical: Defect and Diffusion Forum (Volume 419)
• Pages: 117-123
• DOI: https://doi.org/10.4028/p-3ivuh1
• Online since: October 2022
• Authors: Nikita A. Olivenko*, Oleg A. Kudryavtsev, Anastasia V. Ignatova
• Keywords: Composite Material, Glass Fibre-Reinforced Plastic (GFRP), High-Velocity Impact, Low-Velocity Impact, Numerical Simulations, Verification

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