Wave interaction with defects in pressurized composite structures

Apalowo, R.K.; Chronopoulos, D.; Tanner, G

Abstract

A wave finite element (WFE) and finite element (FE) based computational method is presented by which the dispersion properties as well as the wave interaction coefficients for one-dimensional structural system can be predicted. The structural system is discretized as a system comprising a number of waveguides connected by a coupling joint. Uniform nodes are ensured at the interfaces of the coupling element with each waveguide. Then, equilibrium and continuity conditions are enforced at the interfaces. Wave propagation properties of each waveguide are calculated using theWFE method and the coupling element is modelled using the FE method. The scattering of waves through the coupling element, on which damage is modelled, is determined by coupling the FE and WFE models. Furthermore, the central aim is to evaluate the effect of pressurization on the wave dispersion and scattering characteristics of the prestressed structural system compared to that which is not prestressed. Numerical case studies are exhibited for two waveguides coupled through a coupling joint.

Citation

Apalowo, R., Chronopoulos, D., & Tanner, G. Wave interaction with defects in pressurized composite structures. Presented at 19th International Conference on Aerospace, Mechanical, Automotive and Materials Engineering

• Conference Name: 19th International Conference on Aerospace, Mechanical, Automotive and Materials Engineering
• End Date: Jan 20, 2017
• Acceptance Date: Nov 16, 2016
• Publication Date: Jan 19, 2017
• Deposit Date: Jun 18, 2018
• Publicly Available Date: Jun 18, 2018
• Peer Reviewed: Peer Reviewed
• Public URL: https://nottingham-repository.worktribe.com/output/839757
• Publisher URL: https://waset.org/Publication/wave-interaction-with-defects-in-pressurized-composite-structures/10006148
• Additional Information: Published in: World Academy of Science, Engineering and Technology. International Journal of Materials and Metallurgical Engineering, v. 11, no. 1, 2017
• Contract Date: Jun 18, 2018