• Transmission of vertical vibration to the human foot

    Transmission of vertical vibration to the human foot and ankle. Wee H(1), Voloshin A. Author information: (1)Bioengineering Program and Department of Mechanical Engineering and Mechanics, Lehigh University, 19 Memorial Drive, West Bethlehem, PA 18015, USA.

    The transmission of vertical vibration through seats

    2011-12-19 · The transmission of vertical vibration through a car seat was measured with 80 adults (41 males and 39 females aged 18–65) at frequencies between 0.6 and 20 Hz with two backrest conditions (no backrest and backrest), and with three magnitudes of random vibration (0.5, 1.0, and 1.5 m s-2 rms).

    Transmission of vertical vibration through a seat:

    2015-7-1 · The backrest provides a secondary source of vibration in the direction normal to the backrest, and may be particularly important when the inclination of the backrest is relatively large, as with automotive seats, even with purely vertical vibration excitation (Ippili et al., 2008). The resonance frequencies in the fore-and-aft cross-axis transmissibilities of both the foam at the seat pan and the

    Transmission of vertical whole body vibration to the

    Transmission of vertical whole body vibration to the human body According to experimental studies, low-amplitude high-frequency vibration is anabolic to bone tissue, whereas in

    Transmission of Vertical Vibration to the Human Foot

    2013-2-13 · This study showed that the foot structure and ankle joint play a major role in the vertical vibration transmission to the whole body since the major augmentation of the transmissibility was observed between the medial malleolus and base.

    Transmission of Vertical Whole Body Vibration to the

    2008-3-17 · In previous studies, the transmission of vertical vibration to the human body has been evaluated with single frequencies from 15 to 35 Hz 17 or from 10 to 40 Hz 20 using a vertical vibration platform with constant force input (measured peak accelerations < 0.5 G) or using a vertical vibration platform producing random vertical acceleration with frequency spectrum from 0.25 to 25 Hz at rms-acceleration of ∼0.2 G, 25 from 0.5 to 30 Hz

    Vibration Transmission Characteristics Against Vertical

    2009-6-5 · Abstract: Using a model levitation system composed of an HTS bulk and permanent magnet rows, we investigated the dynamic characteristics of vibration transmission against a vertical vibration as functions of the weight of a levitating object, vibration amplitude, initial and actual gaps between the bulk and the permanent magnet rows. The bulk vibrated in substantially synchronism with the permanent

    The study of seat vibration transmission of a high

    2020-9-1 · Many studies investigated the vibration transmission of car or train seats in either vertical, lateral or fore-and-aft direction using a single-input and single-output (SISO) model (e.g., Corbridge et al.,Qiu and Griffin,Jalil and Griffin,; Lo et al.,Zhang et al.,Gong and Griffin ). For some cases, such as the measurement of seat transmissibility in the laboratory using a vertical vibrator, the vertical

    VIBRATION ANALYSIS OF VERTICAL PUMPS

    2021-5-14 · VIBRATION ANALYSIS OF VERTICAL PUMPS 63 ever, vertical pumps, such as the cooling water pumps, are generally not equipped with vibration transducers. It is difficult and expensive to install underwater instrumentation to measure vibrations near the impeller. Generally, the vibrations are monitored near the top of the motor, because it has been found

    12. VIBRATION ISOLATION Pennsylvania State University

    2002-5-28 · Vibration Solutions Path Minimizing the vibration transmission generally involves using isolator springs and/or inertia blocks. The basic principle is to make the natural frequency of the machine on its foundation as far below the excitation frequency

    Vibration Transmission Characteristics Against Vertical

    2009-6-5 · Abstract: Using a model levitation system composed of an HTS bulk and permanent magnet rows, we investigated the dynamic characteristics of vibration transmission against a vertical vibration as functions of the weight of a levitating object, vibration amplitude, initial and actual gaps between the bulk and the permanent magnet rows. The bulk vibrated in substantially synchronism with the

    The transmission of vertical vibration through seats

    2019-12-2 · The transmission of vertical vibration through a car seat was measured with 80 adults (41 males and 39 females aged 18 to 65) at frequencies between 0.6 and 20 Hz with two backrest conditions (no backrest and backrest), and with three magnitudes of random vibration (0.5, 1.0, and 1.5 ms-2 r.m.s.). Linear regression

    Vertical Vibration Transmission Through the Lumbar

    The first results showed that the vertical vibration transmission was constant throughout the lumbar spine. Inter-subject variability was the major source of disparity. Resonance phenomena were observed between 4 and 9 Hz and depended on posture. Seven fresh, not embalmed, cadavers (58·1±6·6 years, 73±10·3 kg, 170·7±6·5 cm) were

    The transmission of vertical whole-body vibration to

    Abstract The effects of body postures in standing position on the transmission of whole-body vibration to body segments have been investigated. The magnitude acceleration in the Z -axis direction of six body segments: the metatarsus, ankle, knee, hip, shoulder and head has been measured during exposure to random vibration. Ten male subjects exposed to floor vibration stood in ten postures

    Vibration Transmission Characteristics Against Vertical

    Using a model levitation system composed of an HTS bulk and permanent magnet rows, we investigated the dynamic characteristics of vibration transmission against a vertical vibration as functions of the weight of a levitating object, vibration amplitude, initial and actual gaps between the bulk and the permanent magnet rows. The bulk vibrated in substantially synchronism with the permanent

    DTIC ADA052089: The Transmission of Vertical

    2014-12-31 · DTIC ADA052089: The Transmission of Vertical Vibration to the Heads and Shoulders of Seated Men. Item Preview remove-circle Share or Embed This Item.

    Team Corporation Vertical Vibration Test Systems:

    Team Corporation's vertical vibration system is particularly advantageous for vibration tests requiring high force, long stroke or very low frequency capability. With control software options of sine, random, sine on random, random on random, or resonant search & dwell, your Team vertical vibration system will provide consistent, reliable test

    GROUND VIBRATION PREDICTION AND ASSESSMENT

    2013-1-10 · Transmission of vibration, and reception at the point of interest is beset with complexities and uncertainties. To minimise the uncertainties, much more detailed prediction and modelling methods Vertical K ≡ 4Gr/(1-ν )1.79√

    12. VIBRATION ISOLATION Pennsylvania State University

    2002-5-28 · Vibration Solutions Path Minimizing the vibration transmission generally involves using isolator springs and/or inertia blocks. The basic principle is to make the natural frequency of the machine on its foundation as far below the excitation frequency

    Assessing vibration: a technical guideline

    2012-5-15 · occupational vibration, blasting vibration effects or vibration-induced damage to buildings or structures. Section 1 provides information on how the guideline was developed, what extra features have been included since the previous guideline (Environmental noise control manual, Chapter 174) and who the guideline is for.

    Vibration Transmission Characteristics Against Vertical

    Abstract: Using a model levitation system composed of an HTS bulk and permanent magnet rows, we investigated the dynamic characteristics of vibration transmission against a vertical vibration as functions of the weight of a levitating object, vibration amplitude, initial and actual gaps between the bulk and the permanent magnet rows. The bulk vibrated in substantially synchronism with the

    The transmission of vertical vibration through seats

    2019-12-2 · The transmission of vertical vibration through a car seat was measured with 80 adults (41 males and 39 females aged 18 to 65) at frequencies between 0.6 and 20 Hz with two backrest conditions (no backrest and backrest), and with three magnitudes of random vibration (0.5, 1.0, and 1.5 ms-2 r.m.s.). Linear regression

    Vibration Transmission Characteristics Against Vertical

    Using a model levitation system composed of an HTS bulk and permanent magnet rows, we investigated the dynamic characteristics of vibration transmission against a vertical vibration as functions of the weight of a levitating object, vibration amplitude, initial and actual gaps between the bulk and the permanent magnet rows. The bulk vibrated in substantially synchronism with the permanent

    GARAGE STRUCTURE VIBRATION TRANSMISSION TO

    2009-7-22 · (secondary receiver) to determine vertical vibration transmission losses via columns. 0 5 10 15 20 25 30 Narrow Band Frequency Accel. Level dB (re 1 g) in 10 dB Increments 0 5 10 15 20 25 30 Narrow Band Frequency Accel. Level dB (re 1 g) in 10 dB Increments Figure 3, A & B 3 Apparent Resonant Frequencies: (A) 250mm and (B) 215 mm PT slabs

    DTIC ADA052089: The Transmission of Vertical

    2014-12-31 · DTIC ADA052089: The Transmission of Vertical Vibration to the Heads and Shoulders of Seated Men. Item Preview remove-circle Share or Embed This Item.

    Team Corporation Vertical Vibration Test Systems:

    Team Corporation's vertical vibration system is particularly advantageous for vibration tests requiring high force, long stroke or very low frequency capability. With control software options of sine, random, sine on random, random on random, or resonant search & dwell, your Team vertical vibration system will provide consistent, reliable test

    Vertical vibration Article about vertical vibration by

    The study, published today in the Proceedings of the National Academy of Sciences, is the first to demonstrate that "bubbles" of lighter sand form and rise through heavier sand when the two types of sand are subject to vertical vibration and upward gas flow, similar to

    12. VIBRATION ISOLATION Pennsylvania State University

    2002-5-28 · Vibration Solutions Path Minimizing the vibration transmission generally involves using isolator springs and/or inertia blocks. The basic principle is to make the natural frequency of the machine on its foundation as far below the excitation frequency

    GROUND VIBRATION PREDICTION AND ASSESSMENT

    2013-1-10 · Transmission of vibration, and reception at the point of interest is beset with complexities and uncertainties. To minimise the uncertainties, much more detailed prediction and modelling methods Vertical K ≡ 4Gr/(1-ν )1.79√

    Assessing vibration: a technical guideline

    2012-5-15 · occupational vibration, blasting vibration effects or vibration-induced damage to buildings or structures. Section 1 provides information on how the guideline was developed, what extra features have been included since the previous guideline (Environmental noise control manual, Chapter 174) and who the guideline is for.

    vibration transmission, vibration transmission

    6,791 vibration transmission products are offered for sale by suppliers on Alibaba, of which auto shift lever accounts for 1%, gearboxes accounts for 1%. A wide variety of vibration transmission options are available to you, such as helical, worm.

    Vibration Transmission Characteristics Against Vertical

    Using a model levitation system composed of an HTS bulk and permanent magnet rows, we investigated the dynamic characteristics of vibration transmission against a vertical vibration as functions of the weight of a levitating object, vibration amplitude, initial and actual gaps between the bulk and the permanent magnet rows. The bulk vibrated in substantially synchronism with the permanent

    Vibration Transmission from Road Surface Features

    2019-2-2 · Vibration Transmission from Road Surface Features Vehicle Measurement and Detection Technical Report for Nissan Technical Center North America, Inc. by Timothy J. Gordon Zevi Bareket The University of Michigan Transportation Research Institute (UMTRI) 2901 Baxter Road, Ann Arbor, MI 48109-2150 January 2007

    GARAGE STRUCTURE VIBRATION TRANSMISSION TO

    2009-7-22 · (secondary receiver) to determine vertical vibration transmission losses via columns. 0 5 10 15 20 25 30 Narrow Band Frequency Accel. Level dB (re 1 g) in 10 dB Increments 0 5 10 15 20 25 30 Narrow Band Frequency Accel. Level dB (re 1 g) in 10 dB Increments Figure 3, A & B 3 Apparent Resonant Frequencies: (A) 250mm and (B) 215 mm PT slabs

    DTIC ADA052089: The Transmission of Vertical

    2014-12-31 · DTIC ADA052089: The Transmission of Vertical Vibration to the Heads and Shoulders of Seated Men. Item Preview remove-circle Share or Embed This Item.

    Vertical vibration Article about vertical vibration by

    The study, published today in the Proceedings of the National Academy of Sciences, is the first to demonstrate that "bubbles" of lighter sand form and rise through heavier sand when the two types of sand are subject to vertical vibration and upward gas flow, similar to

    12. VIBRATION ISOLATION Pennsylvania State University

    2002-5-28 · Vibration Solutions Path Minimizing the vibration transmission generally involves using isolator springs and/or inertia blocks. The basic principle is to make the natural frequency of the machine on its foundation as far below the excitation frequency

    GROUND VIBRATION PREDICTION AND ASSESSMENT

    2013-1-10 · Transmission of vibration, and reception at the point of interest is beset with complexities and uncertainties. To minimise the uncertainties, much more detailed prediction and modelling methods Vertical K ≡ 4Gr/(1-ν )1.79√

    Technical Vibration Characteristics Report of OH-58A

    2020-8-6 · the highest vibration amplitude occurred at the spiral bevel meshing frequency. Transmission vibration tests were also performed on larger helicopters (refs. 8 and 9). Quite high vibration levels are associated with these transmissions, and methods to reduce noise and vibration are being developed (refs. 1, 10, and 11).

    Assessing vibration: a technical guideline

    2012-5-15 · occupational vibration, blasting vibration effects or vibration-induced damage to buildings or structures. Section 1 provides information on how the guideline was developed, what extra features have been included since the previous guideline (Environmental noise control manual, Chapter 174) and who the guideline is for.

 

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