Noise and vibrations

Part 1 book "An introduction to - Modern vehicle design" included contents: Automotive engineering development; modern materials and their incorporation into vehicle design; the manufacturing challenge for automotive designers; body design - the styling process; body design - aerodynamics; chassis design and analysis; crashworthiness and its influence on vehicle design; noise vibration and harshness.

247p dianmotminh04 12-07-2024 0 0   Download

Part 2 of ebook "Introduction to naval architecture (Fifth edition)" provides readers with contents including: Chapter 11 - Vibration, noise and shock; Chapter 12 - Manoeuvring; Chapter 13 - Structures; Chapter 14 - Ship design; Chapter 15 - Ship types; Appendix A - Presentation of data; Appendix B - The displacement sheet and hydrostatics; Appendix C - Basic ship dynamics; Appendix D - The froude notation;...

283p tuongmothua 11-07-2024 2 1   Download

Part 2 book "Mechanical design of electric motors" includes contents: Motor bearing, motor power losses, motor cooling, motor vibration and acoustic noise, motor testing, modeling, simulation, and analysis of electric motors, innovative and advanced motor design

394p dianmotminh01 17-05-2024 6 5   Download

Ebook "One-shot color astronomical imaging: In less time, for less money!" shows amateur astronomers how to use one-shot CCD cameras, and how to get the best out of equipment that exposes all three color images at once. Because this book is specifically devoted to one-shot imaging, "One-Shot Color Astronomical Imaging" begins by looking at all the basics - what equipment will be needed, how color imaging is done, and most importantly, what specific steps need to be followed after the one-shot color images are taken.

206p tachieuhoa 28-01-2024 3 2   Download

Continued part 1, part 2 of ebook "Definitions, conversions, and calculations for occupational safety and health professionals" provides readers with contents including: Chapter 5 - Thermal stress; Chapter 6 - Sound and noise; Chapter 7 - Mechanical vibration; Chapter 8 - Ionizing and non-ionizing radiation; Chapter 9 - Statistics and probability;...

254p hanlinhchi 29-08-2023 3 1   Download

There is a growing attention to the problems created by mechanical, structural and noise vibrations in the environment on the account of industrial processes, seismic events, excavation, construction, mining, and exploration activities.

9p viberbers 09-08-2023 7 2   Download

In this paper a generalized mathematical model was set up with the above factors taken into consideration. The mathematical model was then developed on a single-phase amorphous steel core transformer with a capacity of 3,3kVA-220V/115V to result in the degrees of deformation and vibration in cases with or without clamped iron for magnetic legs and yokes.

6p vispyker 16-11-2022 7 1   Download

From the approach to theoretical and practical issues, the research has clarified the similarities and differences, the universality and specificity of sustainable development in construction. Successfully proposed environmental assessment criteria for road traffic in the direction of sustainable development. Since then, our team has completed calculations, as well as estimated the impacts of individual factors such as dust, exhaust gas, noise, vibration and solid waste in construction and operation.

7p billyelliot 11-11-2021 7 0   Download

Propose the global – local mean square error criterion (GLOMSEC) for Gaussian equivalent linearization method (GEL) for randomly excited MDOF nonlinear system subjected to white noise or color noise excitation. The mean square of response solution will be concentrated to evaluate the accuracy of the proposed criterion by comparison with exact solution or other accepted solutions.

28p capheviahe26 25-01-2021 10 3   Download

This study examines the vibration and noise levels produced by two different tractor engines made of different specifications such as varying horse power capacity, number of cylinders, cubic capacity of engines etc. Readings of sound level were taken at an arm’s length, 10m and 30m from the engines and the vibration levels on tractor at different engine speeds on surfaces of different tractor components in X, Y and Z directions. A digital Vibration meter VB-8201HA and digital sound level meter SL 4001 was used to measure vibration and noise levels produced by the tractors.

8p kethamoi7 26-08-2020 8 1   Download

This is limited by the occurrence of cavitation, vibration, noise and material strength possessed by propellers. Thus it is necessary to do a new breakthrough in designing or modifying the shape of the propeller to achieve maximum performance. One modification that can be done is to change the skew angle. Propeller B-Series is a propeller that is often used and has a fairly complete geometry data.

16p cleopatrahuynh 01-06-2020 14 1   Download

Traditionally the hand lever operated knapsack sprayer was used by the Indian farmers for spraying of pesticide, weedicide, fungicides, liquid chemicals etc. however it involves fatigue due to continuous hand lever operation results in the low efficiency. Now a days the power operated knapsack sprayers available in the market are being used for spraying operation in production agriculture but it is associated with more vibrations, noise levels causes the high level of fatigue during the operation hence labors are reluctant to use this types of sprayer.

14p quenchua4 06-04-2020 17 2   Download

In an active magnetic bearing (AMB) system, the rotor always rotates at extremely high speed which always accompany with huge vibrations and noises. Most of the former researches associated with reducing the rotor vibrations are mainly focused on the control methods of AMB.

8p vivalletta2711 11-01-2020 13 2   Download

Continued part 1, System design for automotive body: Part 2 with the content: noise, vibration, harshness; structural integrity; passive safety; behavior of thin wall structures, simplified structural models, measurement of the car body stiffness, biomechanics, simplified models for srash... Invite you to consult the ebook to grasp the content details.

329p anthachluu 05-08-2019 31 2   Download

A distinct pattern of phase differences was observed for each of the vibration models. The developed fuzzy logic module demonstrated successful recognition of the vibration frequencies, modes, orders, directions, and phase differences within 0.4 ms for the beam and shell mode vibrations

11p minhxaminhyeu5 30-06-2019 11 0   Download

Since the effect of some nonlinear terms is lost during the first order averaging procedure, the higher order stochastic averaging method is developed to predict approximately the response of linear and lightly nonlinear systems subject to weakly external excitation of second order coloured noise random processes. Application to Dufling oscillator is considered.

12p chikychiky 27-10-2018 24 0   Download

The paper presents a design of an active massspring-inverted pendulum DVA for the inverted pendulum type structure in case the external force is white noise process. The design is based on the optimum passive DVA as carried out in [4] and apply the optimum control force by minimizing the performance index.

7p thienthanquydu 23-10-2018 36 0   Download

In this paper responses of beams subjected to random loading are analyzed by the dual approach of the equivalent linearization method. The external random loading is assumed to be a space-wise and time-wise white noise in which the exact solutions of the modal equations can be found.

14p thienthanquydu 23-10-2018 31 0   Download

part 2 book “occupational safety and health for technologists, engineers, and managers” has contents: pressure hazards, electrical hazards, industrial hygiene and confined spaces, radiation hazards, noise and vibration hazards, promoting safety, preparing for emergencies and terrorism,… and other contents.

344p tieu_vu13 06-08-2018 47 2   Download

In this research, ethylene–propylene–diene (EPDM) rubber, a type of synthetic rubber with excellent anti–vibration and anti–noise properties, was studied for the application in anti–vibration pads. Via changes in the concentration of substances in the mixtures such as carbon black, triethanolamine (TEA) and sulfur, the mechanical properties and the anti–vibration efficiency of the EPDM rubber samples were determined using mechanical tester.

7p cumeo3000 01-08-2018 30 4   Download