A global multiple-input multiple-output modal parameter scheme is employed with the frequency response function (FRF) matrix, to accurately estimate modal parameters of the closely coupled modes of a flexible disk-flexible shaft system from simulated data. The Lagrangian approach is combined with the assumed mode method to derive the governing equations of motion, where the uncoupled disk and shaft modes are employed as the assumed functions. The corresponding state space equations are obtained, which were integrated to provide response at points of interest (output, or response degrees of freedom) due to excitation at desired points (input, or excitation degrees of freedom). Random noise is added to the obtained time signal to simulate actual vibration measurements. The excitation and response time signals are used to generate the corresponding FRF matrix, used in the modal parameter estimation scheme. The extracted modal parameters are found to be in excellent agreement with theoretical results.
- Inderscience Publishers
- Modal parameters of a flexible disk-flexible shaft system from ...
The Best Water Treatment Systems of 2017
To be properly hydrated, most people need to drink around two liters of water a day. Because we drink so much water, trace amounts of impurities, chemicals, and hard metals can build up in our bodies over time. Water has become the focus of many health-interested individuals in recent years. For businesses that need clean water, like labs or manufacturing companies, keeping water as clean as possible is also important. Water filtration systems have gotten more sophisticated and effective over time, and promise...
Waste Water Batch Treatment System
Industrial Wastewater Treatment Batch Treatment Systems (BTS) are intended for lower daily volumes of wastewater typically less than 10,000 gallons per day and designed to “batch” treat wastewater from start to finish at one time. In a batch treatment system, a volume of wastewater is gathered, treated by chemical / physical / biological means, and discharged. Storage Tanks accumulate waste often segregated as acid, alkaline, cyanide and hexavalent chrome-bearing which is transferred to a single...
What’s the Point of Brake Fluid?
The quality of brake fluid affects the reliability of the braking system and road safety. This substance transmits energy from master brake cylinder to wheel cylinder. Vehicle braking is characterized by friction forces between the brake rotor and brake pads. This releases a certain amount of heat which is transmitted to brake fluid through service elements of the brake system. Therefore, boiling point and viscosity are very important parameters of this substance. Besides, it must meet a number of other requireme...
Bulk Bag System Design Considerations
Designing a new Bulk Bag Mix Tank Feed System? Here are some considerations during the design phase that will help meet expectations of plant managers and operators alike: Gravity feed of solution or metering pumps: Depending on the installation, solution/slurry from the mix tank can be gravity fed to process or if discharging into pressure, metering pumps will be required. Once you determine you need metering pumps their are different types. IPM doesnt manufatucre any pumps but has used various types over the...
District heating points way forward for energy prepayment revolution
Ofgem, which has called energy prepayment the option of `last resort`, has announced a price cap for customers until the roll-out of smart meters in 2020. But smart metering is already being widely used in the district heating sector, where it is revolutionising prepayment and reducing energy bills. Customer friendly smart meters are fast making prepayment the first choice option for thousands of residents connected to community heating schemes. Technology from metering and billing specialist Switch2 Energy is...