The dynamic behaviour of stacked shipping units during transport. Part 1: model validation

Rouillard, Vincent; Sek, Michael A; Crawford, Shayne

doi:10.1002/pts.645

Cited by 18 publications

(28 citation statements)

References 1 publication

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“…This approach of modelling the entire system by an assembly of interacting elements, each one characterized by a bumping effect, is not so far from what commonly done for automatic machines where the dynamic optimisation also passes by a special design and an accurate material choices. [28][29][30].…”

Section: Detecting Vibrations On Truckmentioning

confidence: 99%

“…This preliminary study on techniques and experiences for measuring the mechanical and climatic conditions encountered by palletized products in handling and transport is realized as part of a larger investigation to be performed inside the "MAAS - Truck 11,12,13,14,15,18,19,20,21,22,23,2 4,25,26,30,35,49,53,59 14, 15 23,24,25,26, 29,30 47 56,60,61,62 55,54,47 …”

Section: Acknowledgementmentioning

confidence: 99%

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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: Detecting Vibrations On Truckmentioning

confidence: 99%

Section: Acknowledgementmentioning

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

“…Rouilard et al developed a numerical model to predict the dynamic response of stacked package systems when subjected to vertical vibrational excitation. The effects of vertical restraint tension and stiffness were taken into account . Bernad et al investigated the dynamics of different corrugated stacked packaging units by means of operational modal analysis technique and a 6 degrees of freedom multi‐axis shaker table to demonstrate the necessity of multiaxis testing …”

Section: Literature Reviewmentioning

confidence: 99%

“…Although the vibrational performance of single‐unit packaging has been thoroughly studied, the behaviour of stacked packaging units is not fully understood. The complexity of the problem is compounded when the effects of vertical restraints and nonlinearity are taken into account …”

Section: Introductionmentioning

confidence: 99%

Dynamic Performance of Stacked Packaging Units

Wang

Fang

2016

Packag Technol Sci

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Stacked packaging units is the main form of distribution packaging of products. Its dynamic performance is not fully understood. This paper investigated the influence of the constraint, input vibration, location and contact nonlinearity on the dynamic performance of three layers stacked packaging units. The dynamic contact force between surfaces and acceleration response of products were obtained. In sine sweep vibrations, the constraint to stacked packaging units has an obvious influence on the dynamic characteristics. The acceleration response of product is associated with the vibration mode. The force amplification factor is in general between 1.5 and 2, but it can close to 3 on top layer in the case of no fixed. In random vibrations, non‐Gaussian data of dynamic contact force appear when Gaussian data of input vibration pass through the stacked packaging units, resulting a Weibull distribution of force level‐crossing. The force level‐crossing diagram becomes more abrupt with the decreasing of input vibration level, smoother from the top contact surface to middle and bottom ones, and moves right and becomes smoother with the constraint strengthen. In the case of lower input level, Gaussian distribution of force level‐crossing appears. The force power spectral density (PSD) between bottom box and table is much larger than that between boxes, which is significantly influenced by the first resonance frequency. However, the acceleration PSD of product is significantly influenced by both the first and second resonance frequencies, and controlled by the vibration mode. It depends much on the value of input acceleration PSD around the resonance frequencies.

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“…David studied the time compression method for broadband random vibration tests. Rouillard and his partners studied the dynamic behaviours of stacked packaging units as experienced in transport vehicles and proposed a numerical computer model to predict the dynamic response of stacked package systems when subjected to vertical vibration excitation. Wang Z. W. and 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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The dynamic behaviour of stacked shipping units during transport. Part 1: model validation

Cited by 18 publications

References 1 publication

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

Dynamic Performance of Stacked Packaging Units

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

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