Investigation of Frequency Response Function of Product-Transport System Based on Multi-coordinate Coupled Inverse Substructure Method

Zhang, Yuanbiao; Wang, Zhiwei

doi:10.1002/pts.2038

Cited by 7 publications

(14 citation statements)

References 9 publications

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“…In this way, a FRF (Function Response Frequency) model was developed, in order to better understand the dynamic response of product [54]. This model was also improved considering two (instead of one) sub-structures, representing truck and load [55].…”

Section: Laboratory Testmentioning

confidence: 99%

Measuring the mechanical and climatic conditions encountered by palletized products in handling and transport

Fragassa¹,

Macaluso²,

Vaccari³

et al. 2017

FME Transaction

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Handling and transport can turn out to be a disastrous experience for the integrity of goods and products. This fact has encouraged the attention of producers towards the development of measures aiming at maximizing this integrity. At the same time, to obtain really effective solutions, the environmental conditions and the level of stress acting on these products during their way from the producer to the final customer have to be detected. This paper illustrates some between the most relevant methods and experiences for monitoring palletized products.

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Section: Laboratory Testmentioning

confidence: 99%

Measuring the mechanical and climatic conditions encountered by palletized products in handling and transport

Fragassa¹,

Macaluso²,

Vaccari³

et al. 2017

FME Transaction

View full text Add to dashboard Cite

show abstract

“…further developed the three‐level inverse sub‐structuring method for product transport system. Zhang applied the methods to study the dynamics of refrigerator‐truck transport system by applying the inverse sub‐structuring method and obtained the FRFs for refrigerator accurately, indicating the great application prospect of the inverse sub‐structuring method for real product transport system. To apply the inverse sub‐structuring method more efficiently for most engineering systems, Wang J .…”

Section: Introductionmentioning

confidence: 99%

Inverse Sub‐Structuring Theory for Coupled Product Transport System Based On the Dummy Masses Method

Wang

et al. 2016

Packag Technol Sci

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It is of high importance to predict the components frequency response functions (FRFs) for obtaining the coupled product transport system's response. However, the components behaves much differently when coupled with another components compared with that in free state. Inverse sub‐structuring method has been recently proposed and applied for inverse analysis of the dynamical response of coupled product transport system. The component‐level FRFs and the coupling dynamic stiffness are all predicted from only the system‐level FRFs, facilitating the engineering design for product transport system. However, in most engineering application practices, the system‐level FRFs from coupling degrees of freedom may not be measured accurately because of the difficulties of vibration excitation and/or response measurement for the coupled interface between components within the limited accessible space. The aim of this paper is to develop a new FRF‐based indirect inverse sub‐structuring method for the analysis of the dynamic characteristics of a two‐component coupled product transport system without measuring system‐level FRFs at the coupling degrees of freedom. A so‐called dummy masses method is developed and applied for predicting the unmeasured FRFs at the coupling degrees of freedom, and the inverse sub‐structuring approach based on the dummy mass method is derived for inverse analysis of coupled product transport system, which is further verified by a lumped‐mass model, showing exact agreement. Finally, the experiment on a physical prototype of two‐substructure coupled product transport system is performed to further check the accuracy of the suggested method. The new method shows its great application prospect in coupled product transport system.

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“…Although this technique includes several mathematical operations that might be very sensitive to measurement errors and/or inconsistencies, it has its unique advantages in various application fields because no component-level spectral response is needed. Then it was further developed and applied to study the dynamics of various engineering structures, [8][9][10][11][12][13][14] showing its great application prospect. Wang introduced the inverse sub-structuring method for analysis of a product transport system; 11 he treated the product transport system as a two substructure-coupled system composed of product system (including critical element) and vehicle connected by packaging and its fixing (location pattern, securing, etc.…”

Section: Introductionmentioning

confidence: 99%

Inverse Sub‐structuring Method for Rigidly Coupled Product Transport System based on Frequency Response Function Testing Probe Technique

Wang

Sun

et al. 2016

Packag Technol Sci

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The inverse sub-structuring method has been recently proposed and applied for inverse analysis of product transport system, to predict the component-level frequency response functions (FRFs) and the coupling dynamic stiffness from only the system-level FRFs. However, previous applications of this method were all developed based on the assumption that the components were coupled by flexible couplings. Actually, increasing more components are welded or bolted to construct a coupled system, which should be treated as rigidly coupled system. The aim of this paper is to derive a new FRF-based inverse sub-structuring method for the analysis of the dynamic characteristics of a two-component coupled product transport system with rigid couplings. And then a so-called FRF testing probe technique is proposed and applied to measure the difficult-to-monitor FRFs at the coupling interface. The developed method is verified by a lumped-mass model, showing exact agreement. Finally, the experiment on a physical prototype of two-substructure coupled product transport system is performed to further check the accuracy of the suggested method. The proposed method is an extension of previous inverse sub-structuring method and may help to obtain the main controlling factors and contributions from the various structure-borne paths for product transport system.

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Investigation of Frequency Response Function of Product-Transport System Based on Multi-coordinate Coupled Inverse Substructure Method

Cited by 7 publications

References 9 publications

Measuring the mechanical and climatic conditions encountered by palletized products in handling and transport

Measuring the mechanical and climatic conditions encountered by palletized products in handling and transport

Inverse Sub‐Structuring Theory for Coupled Product Transport System Based On the Dummy Masses Method

Inverse Sub‐structuring Method for Rigidly Coupled Product Transport System based on Frequency Response Function Testing Probe Technique

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