Outputs (29)

A dynamic stiffness method to estimate the sound insulation of an arbitrarily installed thick cross laminated timber (CLT) plate (2024)
Presentation / Conference Contribution

There is no generally accepted standard methodology to determine the dynamic constants of whole cross laminated timber (CLT) plates. Combined with the observation that CLT walls or floors are installed in situ under very different conditions to labor... Read More about A dynamic stiffness method to estimate the sound insulation of an arbitrarily installed thick cross laminated timber (CLT) plate.

On the limitations of transmissibility functions for damage localisation: the influence of completeness (2024)
Journal Article
Meggitt, J. W., & McGee, R. C. (in press). On the limitations of transmissibility functions for damage localisation: the influence of completeness. Structural Health Monitoring, https://doi.org/10.1177/14759217241226602

Transmissibility functions are used to identify and locate damage in critical structures for health monitoring purposes. Their appeal over conventional signal or frequency response-based functions lie in a unique property; sub-structural invariance.... Read More about On the limitations of transmissibility functions for damage localisation: the influence of completeness.

Applications of a hybrid method to a plate with simply supported boundary conditions (2023)
Presentation / Conference Contribution

* The EN12354 building acoustics prediction standards are based on the statistical energy analysis (SEA) method. In a traditional SEA path analysis, lightweight or heavyweight materials have different principal paths that determine the sound insulati... Read More about Applications of a hybrid method to a plate with simply supported boundary conditions.

Power flow sensitivity analysis for optimal structural modification (2023)
Journal Article
Meggitt, J. (2023). Power flow sensitivity analysis for optimal structural modification. Applied Acoustics, 211, Article 109463. https://doi.org/10.1016/j.apacoust.2023.109463

Across many industries there is a need to develop products with improved vibro-acoustic performance. Whether the aim is to reduce the radiated sound level in a vehicle cabin, or to minimise the vibration level of sensitive components, the problem may... Read More about Power flow sensitivity analysis for optimal structural modification.

Interval sensitivity analysis of joint dynamics in complex built-up structures (2022)
Journal Article

The dynamic properties of joints, or inter-component connections, are a principal source of uncertainty when modelling complex built-up structures. In the present paper, we propose an interval-based sensitivity analysis (SA) to establish the contribu... Read More about Interval sensitivity analysis of joint dynamics in complex built-up structures.

Interval sensitivity analysis of joint dynamics in complex built-up structures (2022)
Journal Article

The dynamic properties of joints, or inter-component connections, are a principal source of uncertainty when modelling complex built-up structures. In the present paper, we propose an interval-based sensitivity analysis (SA) to establish the contribu... Read More about Interval sensitivity analysis of joint dynamics in complex built-up structures.

Interval-based identification of response-critical joints: A tool for model refinement (2022)
Journal Article
Meggitt, J. (2022). Interval-based identification of response-critical joints: A tool for model refinement. Journal of Sound and Vibration, 529, https://doi.org/10.1016/j.jsv.2022.116850

To accurately model the dynamics of a complex built-up structure it is often necessary to forgo the assumption of ideal rigid coupling between components. The dynamic behaviour of inter-component connections, or joints, can have a significant impact... Read More about Interval-based identification of response-critical joints: A tool for model refinement.

Noisy neighbours : towards a hybrid prediction and testing process for sound insulating partitions (2021)
Presentation / Conference Contribution

There are numerous methods for characterising sound insulating and impact noise reducing components and systems, each with their own advantages and disadvantages. Two of the predominant modelling techniques for prediction of transmission loss through... Read More about Noisy neighbours : towards a hybrid prediction and testing process for sound insulating partitions.

Fast transfer path analysis using controlled electric motors as in-situ blocked force vibration sources (2021)
Thesis

Under certain driving and road conditions, steering manoeuvres may provoke audible noise inside the vehicle compartment induced by the electric power steering (EPS) system. Regarding noise, vibration and harshness (NVH), engineers require practical t... Read More about Fast transfer path analysis using controlled electric motors as in-situ blocked force vibration sources.

Generalised round-trip identity — for the determination of structural dynamic properties at locations inaccessible or too distant for direct measurement (2021)
Journal Article
Wienen, K., Sturm, M., Moorhouse, A., & Meggitt, J. (2021). Generalised round-trip identity — for the determination of structural dynamic properties at locations inaccessible or too distant for direct measurement. Journal of Sound and Vibration, 511, 116325. https://doi.org/10.1016/j.jsv.2021.116325

In noise and vibration engineering, a structure’s passive dynamic properties are often quantified by frequency response functions (FRFs). This paper focuses on acquiring FRFs from experimental tests, considering both, translational (x, y, z) and rota... Read More about Generalised round-trip identity — for the determination of structural dynamic properties at locations inaccessible or too distant for direct measurement.