A Comparison of Two Component TPA Approaches for Steering Gear Noise Prediction

Seijs, M. V. van der; Pasma, E. A.; Klerk, D. de; Rixen, Daniel J.

doi:10.1007/978-3-319-15209-7_7

Cited by 8 publications

(3 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For the transfer function matrix H B 4c1 obtained by the operational test, the singular value decomposition is applied to solve the matrix inversion, and then the interface forces are calculated by solving equation (9). Substituting the obtained interface forces into equation 2, the vibration contribution of each path can be solved.…”

Section: Matrix Inversion Tpa Theorymentioning

confidence: 99%

See 1 more Smart Citation

Rubber Stiffness Optimization for Floor Vibration Attenuation of a Light Bus Based on Matrix Inversion TPA

Shi

Yang

et al. 2020

Shock and Vibration

View full text Add to dashboard Cite

The NVH characteristics of light buses are a very important performance for market competitiveness. To solve the serious floor vibration of a light bus at speed of 60 km/h and 90 km/h, we first derive the matrix inversion TPA (MITPA) method, and then transfer path contribution is analyzed by applying matrix inversion TPA with TPA model establishment, operational vibration test, and FRF measurement. Next, the energy decoupling rate of the powertrain mount system (PMS) is optimized by rubber stiffness optimization based on the path contribution analysis taking both amplitude and phase into consideration. The optimized natural frequencies and energy decoupling rate indicate that energy decoupling rate (EDR) of each DoF of the powertrain mount system is improved. Finally, to verify the optimization effect, this paper implements an operational vibration test with optimized mount installed. The results indicate that floor vibration of postoptimization is improved significantly compared with that of preoptimization. This paper offers a method for engineers to improve vibration problem of vehicle by combining experimental TPA for identification of dominant paths with optimization procedure.

show abstract

Section: Matrix Inversion Tpa Theorymentioning

confidence: 99%

“…ere are three kinds of transfer path analysis methods: conventional TPA [8], component-based TPA, and transmissibility-based TPA. For component-based TPA, the first step is to solve blocked force or equivalent force, which characterizes the source by measurements in situ [9,10].…”

Section: Introductionmentioning

confidence: 99%

Rubber Stiffness Optimization for Floor Vibration Attenuation of a Light Bus Based on Matrix Inversion TPA

Shi

Yang

et al. 2020

Shock and Vibration

View full text Add to dashboard Cite

show abstract

“…Furthermore, Moorhouse et al (2009) used a DS method and the blocked force occurring at a joint interface to apply a transfer path analysis in an operational state. Van der Seijs et al (2015, 2016) predicted the dynamic characteristics of an assembled automotive steering column system using the synthesis technique and reviewed the DS. Klaassen et al (2018) introduced a hybrid dynamic model using the system equivalent model mixing technique.…”

Section: Introductionmentioning

confidence: 99%

Accuracy improvement method for dynamic substructuring models in vehicle systems

Kim

Park

Cho

et al. 2021

Journal of Vibration and Control

View full text Add to dashboard Cite

This study proposes an improved dynamic substructuring model using the estimated frequency response function information at coupling points between substructures. An assembled system generally consists of two or more substructures connected by a bolt. Individual substructure evaluation excluding the effects of other components is important in the development stage of a general mechanical system because the vibro-acoustic performance of the system depends on the specific combination of substructures. Therefore, this study predicted the final coupling system performance using information from the initial evaluation of the individual substructures. Accurate measurements of the joint properties are required to accurately estimate the dynamic assembled system characteristics; however, physical constraints typically limit such measurements at actual coupling points. Accordingly, a method that utilizes generalized coupling properties to estimate the dynamic characteristics of a new coupling system based on the characteristics of an original substructure is proposed. Virtual point transformation is then used to estimate accurate frequency response functions at the coupling points of the assembled system based on convenient measurements. The proposed method was validated using a vehicle suspension that was hard mounted in a test jig and onto an actual vehicle body to estimate the vibration characteristics of the assembled system. The findings of this study contribute to the accurate estimation of the dynamic properties of many real-world bolt-assembled systems.

show abstract