Experimental study on dynamic interference effect of two closely spaced machine foundations

Swain, Abhilas; Ghosh, Priyanka

doi:10.1139/cgj-2014-0462

Cited by 31 publications

(19 citation statements)

References 19 publications

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“…In identifying the dynamic interaction of a foundation group this phase delay is a vital parameter. The deferment of the phase lag is noted to reduce when the spacing between the footings decrease [11].…”

Section: Introductionmentioning

confidence: 94%

The Action of Vibrating Foundation on Adjacent Static – Load Foundation Having Rectangular Shape

El-ezzi¹,

Zakaria²

2020

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This paper presents an experimental study on the dynamic response of the rectangular foundation, under effect of dynamic load which results from an adjacent footing called (the source of vibration), having square shape and excited by a well-known source of vibration put on the top it. The purpose being to study the effect of dynamic motion on a nearby foundation called a second foundation. Both foundations are founded on collapsible soil (gypseous soil) with a content of gypsum 60%. The research is conducted in dry and soaked conditions with a large experimental program. The first basis (source vibration) and the second footing are made out of steel, respectively in the sizes (80x80x40), (160x40x40) mm with (L/ B= 4). After that the soil had been prepared in layers in steel containers with (1000x 500x500) mm, then the two foundations positioned centrally over the ground. The first footing excited by the rotating mass type mechanical oscillator to generate vertical harmonic loading, produces a comparable impact of dynamic loads and the second footing is loaded with only static weight under dynamic excitement. The tests were conducted under dynamic response for three frequencies (10, 20, 30) Hz, Displacement amplitude and acceleration of the second foundation were determined, at a different distance between the foundation (2B, 4B, 6B). The results have shown that, when the distance between the foundation increases, the amplitude and the acceleration for the second foundation decreased. Furthermore, the value of these parameters at dry state is higher than their value at soaked state.

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Section: Introductionmentioning

confidence: 94%

The Action of Vibrating Foundation on Adjacent Static – Load Foundation Having Rectangular Shape

El-ezzi¹,

Zakaria²

2020

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“…The dynamic response (displacement amplitude, velocity, acceleration) of the second footing are measured and recorded at the same time using Piezoelectric accelerometer and two dial gauge, are placed, previously on top and edge of the second footing to obtain a foundation response, the operating frequency of (600, 1200, 1800) rpm equivalent to (10,20,30) Hz is considered in the present study, the response parameters were recorded every 5 minutes during operation test duration.…”

Section: Preparation and Test Proceduresmentioning

confidence: 99%

“…This stage slack is observed to be an indispensable parameter in characterizing the dynamic collaboration of a gathering of footings. The stage slack is seen to diminish with abatement in the dispersing between the footings, the variety of transmission proportion is by and large connected with a base and a most extreme point [10].…”

Section: Introductionmentioning

confidence: 96%

Effect of Vibrating Footing on a Nearby Static – Load Footing

Ibrahim

Zakaria

2019

Civ Eng J

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This paper presents an experimental study on the dynamic response of square footings under effect of dynamic load comes from adjacent footing called the (source of vibration (which is excited by a known vibration source placed on the top of it, the objective is to study the effect of dynamic motion of the source of vibration on a nearby footing, called second footing, both footings rest on collapsible soil (gypseouse soil) with gypseouse content (60%). The study is performed through wide experimental program in dry and soaked condition. The first footing (source vibration) and the second footing have dimensions (80 80 40), (100 100 40) mm respectively and are manufactured from steel, then the two footings placed centrally over soil after prepared it in layers’ form in steel container with (1000 500 500) mm. The first footing exposed to vertical harmonic loading by using a rotating mass type mechanical oscillator to gives a similar effect of the dynamic loads, the second footing loaded with static weight only, under the dynamic excitation. The tests are conducted under dynamic response for three frequencies (10, 20, 30) Hz, the movement (displacement amplitude, velocity, and acceleration) of the second footing studied by varying spacing between the footings. The results showed that the amplitude of displacement, velocity, and acceleration for the second footing decreases when the spacing between footing increase. In addition, the value of these parameters at dry state is greater than its value at soaked state.

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“…Using the finite difference method, Ghosh 18 modeled the foundation in close proximity to a heavy machine tool ( Figure 5), and the settlement law of the foundation with different spacing, under dynamic excitation, was analyzed. Swain and Ghosh 36 conducted a study considering different vibration conditions for a square foundation, based on the Ghosh paper ( Figure 6), to obtain the dynamic response of different length-width ratios of concrete foundations under different excitations.…”

Section: Influencing Factors Of Dynamic Characteristics Of the Systemmentioning

confidence: 99%

Systematic review of research relating to heavy-duty machine tool foundation systems

Tian

Liu

et al. 2019

Advances in Mechanical Engineering

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The quality of heavy-duty machine tool foundations can drastically affect the operating life and working precision of the tool, and the high cost of manufacture has drawn a lot of attention. This article summarized the research status of the relevant literature on the characteristics, vibration isolation, foundation optimization, and quality inspection of heavyduty machine tool-foundation system, induced the influencing laws of the influencing factors of the system, reviewed the highlights and achievements in the research of heavy machine tool-foundation system at present, and put forward some problems and development directions existing in the research of heavy machine tool-foundation system. It lays a foundation for realizing the judgment of the concrete foundation quality and improving the processing precision and the maintenance of the heavy machine tool.

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Experimental study on dynamic interference effect of two closely spaced machine foundations

Cited by 31 publications

References 19 publications

The Action of Vibrating Foundation on Adjacent Static – Load Foundation Having Rectangular Shape

The Action of Vibrating Foundation on Adjacent Static – Load Foundation Having Rectangular Shape

Effect of Vibrating Footing on a Nearby Static – Load Footing

Systematic review of research relating to heavy-duty machine tool foundation systems

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