What will i learn?
- Carry out the basic end-to-end rotordynamics analysis process in Ansys Mechanical.
- Understand the underlying technical and analysis features that are unique to rotordynamics.
- Describe and apply the essential rotordynamics analysis capabilities: computation of critical speeds, prediction of rotor whirl and system stability, computation of unbalance response, and consideration of start up and shut-down transient responses.
- Results Validation
- Training on Rotor Dynamics tool, ROSS {Open Forum)
- Exercise 1: Lateral critical speed analysis of multi sage centrifugal pump casings
- Exercise 2: Forced response analysis of multi sage centrifugal pump casings
- Exercise 3: Torsional critical speed analysis of multi sage centrifugal pump casings
- Exercise 4: Torsional critical speed analysis of multi sage centrifugal pump casings (VFD)
- Exercise 5: Steady state responce analysis of multi sage centrifugal pump casings (VFD)
- Hydrodynamic Bearing Calculations
- Short bearings (Wear rings, seals, sleeves) calculations
- Gyroscopic Effects
- Rotor Mounted on Bearings
- Design Optimization using DesignXplorer
Curriculum for this course
65 Lessons
00:00:00 Hours
Rotor Dynamics :Overview
3 Lessons
00:00:00 Hours
- Introduction to Rotordynamics .
- , Brief History of Rotor Dynamics .
- The State of the Art of Rotor Dynamics .
Gyroscopic Effects
3 Lessons
00:00:00 Hours
- Synchronous whirl of a Rotor Systems with a thin Disc .
- Synchronous and Asynchronous Pure Wobbling motions .
- Asynchronous whirl of a Rotor system with a thin Disc, .
Rotor Mounted on Bearings:
2 Lessons
00:00:00 Hours
- Rigid Rotor Mounted on Simple Anisptropic Springs as Bearings .
- Flexible Shaft with a Rigid Disc Mounted on Anistropic Supports .
Simple Rotor Systems
2 Lessons
00:00:00 Hours
- Simple Rotor Models with Rigid Bearings .
- Jeffcott Rotor Model with an Offset Disc or Variant of Jeffcott Rotor Model .
Theory of Bearing Characteristics Calculations
2 Lessons
00:00:00 Hours
- Long bearings (hydrodynamic bearings) .
- Short bearings (seals, wear rings and sleeves)- New clearances and Worn clearances .
FEA approach (ANSYS and ROSS) to find the bearing characteristics (Stiffness and damping)
2 Lessons
00:00:00 Hours
- Long bearings (hydrodynamic bearings) .
- Short bearings (seals, wear rings and sleeves) .
Instability in Rotor Systems
6 Lessons
00:00:00 Hours
- Bearings .
- Fluid Film Bearings .
- Internal Damping and Asymmetric Shaft .
- Steam Whirl and Asymmetrical shaft .
- Steam Whirl and Seals .
- Subcritical speed Whirl .
Theoretical approach of finding lateral critical speeds
2 Lessons
00:00:00 Hours
- Influence Coefficient methods .
- FEA Approach (ANSYS and ROSS) .
Forced Response Analysis (Unbalance Response Analysis)
3 Lessons
00:00:00 Hours
- Approach of finding imbalance force .
- finding alternating stresses .
- computing max-max amplitude at the rorating elements .
FEA Simulation of Lateral Critical Speed Analysis using ANSYS and ROSS
1 Lessons
00:00:00 Hours
- Multistage turbomachinery shaft with VFD and Gear-box combination .
FEA Simulation of Lateral Critical Speed analysis uisng ANSYS and ROSS
2 Lessons
00:00:00 Hours
- FEA simulation procedure for finding lateral critical speed analysis .
- FEA simulation procedure for forced response analysis. .
Theoretical approach of finding torsional vibrations
2 Lessons
00:00:00 Hours
- Geared and Branched Systems .
- FEA Approach (ANSYS and ROSS) .
FEA Simulation of Torsional Critical Speed analysis using ANSYS and ROSS
2 Lessons
00:00:00 Hours
- Torsional critical speed analysis for multistage centrifugal pump casing (VFD Motor-Gear box-Multistage centrifugal pump casing) .
- Torsional steady state analysis for multistage centrifugal pump casing (VFD Motor-Gear box-Multistage centrifugal pump casing .
Fatigue Life Calculations in ANSYS
3 Lessons
00:00:00 Hours
- Perform stress analysis to determine the stress distribution within the rotor components under different operating conditions. .
- Identify and count the stress cycles experienced by the rotor during its operational life .
- Utilize fatigue life models, such as the S-N (stress-life) curve or the Goodman diagram, to predict the fatigue life of the rotor components .
Exercise 1: Stiffness and damping values for Long bearings and Short Bearings Using ANSYS and ROSS
4 Lessons
00:00:00 Hours
- Hydrodynamic bearing Calculations: Centrifugal Pump Casing .
- Stiffness and damping value calculations: Wear rings, seals and sleeves .
- Stability behavior of the rotor .
- Method of calculations unbalance force as per API .
Exercise 2: Lateral analysis study of the multistage centrifugal Pump using ANSYS and ROSS
7 Lessons
00:00:00 Hours
- Lateral Critical Speed Calculations: Dry Run .
- Campbell diagram: External excitations (Engine speed, vane passing frequency, gear mesh frequency) .
- Lateral Critical Speed Calculations: New Clearance and Worn clearances. .
- Forced Response analysis at the critical interference points. .
- Frequency Vs Damping ratio Diagram .
- Peak to peak Amplitude Response at the rotating elements. .
- Results Interpretation as per API standards .
Exercise 3: Torsional analysis of the pump-motor and direct coupling in ANSYS
5 Lessons
00:00:00 Hours
- Torsional critical Speed calculations: Direct coupling .
- Cambell diagram : All possible excitations (Engine speed, vane passing frequency and gear mesh frequency) .
- Procedure of finding imbalance force as per API .
- Steady state forced response analysis. .
- Goodman's diagram: to check the fatigue strength of the pump rotor. .
Exercise 4:Torsional analysis of the pump-motor and flexible coupling-Gear box in ANSYS
6 Lessons
00:00:00 Hours
- Torsional critical Speed calculations: Direct coupling .
- Cambell diagram : All possible excitations (Engine speed, vane passing frequency and gear mesh frequency) .
- Procedure of finding imbalance force as per API .
- Steady state forced response analysis. .
- Goodman's diagram: to check the fatigue strength of the pump rotor. .
- Mechanical Turning approach to tune up coupling design. .
Exercise 5:Field Fix : Boiler Feed Pump -Lateral and Torsional analysis
8 Lessons
00:00:00 Hours
- Lateral critical speed analysis: Dry run, New clearance and Worn clearances .
- Campbell diagram: External excitations (Engine speed, vane passing frequency, gear mesh frequency) .
- Forced Response analysis at the critical interference points. .
- Frequency Vs Damping ratio Diagram .
- Peak to peak Amplitude Response at the rotating elements. .
- Results Interpretation as per API standards .
- Torsional critical Speed calculations: Different Couplings .
- Recommendations .
Requirements
- strong foundation in mechanical engineering or a related field
+ View more
Description
- Rotordynamics is applicable across a wide range of industries, including aerospace, automotive, energy, oil and gas, and manufacturing. Its versatility makes it a valuable tool for improving the performance and reliability of diverse rotating machinery.
In summary, rotordynamics provides valuable insights into the behavior of rotating machinery, offering a proactive approach to design, maintenance, and optimization. Industries that leverage rotordynamics can benefit from increased reliability, reduced downtime, and improved overall efficiency of their rotating equipment.
Rotordynamics, which involves the study of rotating machinery behavior, plays a crucial role in various industries due to its numerous advantages. Here are some key advantages of rotordynamics in industry:
1. Increased Equipment Reliability:
- Understanding the dynamic behavior of rotating machinery helps in designing more reliable systems. This knowledge allows engineers to identify potential issues related to vibrations, stability, and critical speeds, leading to improved reliability and reduced risk of failures.
2. Optimized Design for Performance:
- Rotordynamics analysis allows engineers to optimize the design of rotating equipment for better performance. This includes considerations for balancing, alignment, and damping to ensure that machinery operates efficiently and meets performance requirements.
3. Prevention of Catastrophic Failures:
- Rotordynamics analysis helps in identifying potential resonance conditions and critical speeds that could lead to catastrophic failures if not addressed. By understanding and mitigating these risks, industries can prevent costly downtime and equipment damage.
4. Energy Efficiency:
- Optimized rotor designs can lead to more energy-efficient machinery. By minimizing vibrations and ensuring smooth operation at different speeds, industries can enhance the overall energy efficiency of rotating equipment, reducing operational costs.
5. Extended Equipment Lifespan:
- By assessing the dynamic behavior of rotating machinery, engineers can design systems that minimize wear and fatigue, leading to an extended lifespan of equipment. This is particularly important in industries with continuous or heavy-duty operations.
6. Reduced Maintenance Costs:
- Proactive rotordynamics analysis helps in identifying potential issues early on, allowing for planned maintenance rather than reactive repairs. This can significantly reduce downtime and overall maintenance costs.
7. Customization for Specific Applications:
- Different industries have unique requirements for rotating machinery. Rotordynamics analysis enables the customization of designs to meet specific application needs, ensuring that equipment performs optimally in its intended environment.
8. Compliance with Standards and Regulations:
- Many industries have stringent standards and regulations regarding the performance and safety of rotating machinery. Rotordynamics analysis helps ensure that equipment complies with these standards, reducing the risk of regulatory non-compliance.
+ View more
Other related courses
About the instructor
- 0 Reviews
- 26 Students
- 10 Courses
+ View more
PYTHAGORAS Engineering and Consultancy offers high-quality instruction in the field of finite element analysis with the Ansys software. A significant number of individuals hailing from various regions throughout the globe have derived advantages from the meticulously designed instructional program. A significant majority, over 90%, of our students successfully get positions inside esteemed firms, using the information acquired via my training program.
Dr. Joel Daniel, a highly esteemed individual with a Master of Technology and a Doctorate degree, has been recognized as a prominent Finite Element Analysis (FEA) Trainer for the last two decades. He is a member of the Indian Society for Technical Education (ISTE), as well as the Institution of Engineers (India) (IEI) and the Institution of Production Engineers (IPE). He serves as a consultant in the field of Finite Element Analysis (FEA), conducts research, and has a position as an academic instructor. He earned his Ph.D. in fatigue and fracture mechanics.
As a scholar, he actively engages in several academic endeavours, such as serving as a teaching faculty member at multiple engineering institutions associated with JNTU. He was employed as an adjunct faculty member at ANURAG Engineering College. Delivered several guest lectures pertaining to modern technologies within the field of mechanical engineering. He had a position as a member of the curriculum board at Vignan engineering institutions. The individual in question has conducted reviews of several national and international publications, as well as provided guidance to a significant number of postgraduate and PhD students, both domestically and internationally. The individual organized Finite Element Analysis (FEA) workshops for esteemed educational institutions such as the National Institute of Technology (NIT), Birla Institute of Technology and Science (BITS) Dubai, and Navajo Technical University in the United States.
The individual has over two decades of research expertise in the fields of gas turbine design, vehicle engineering, and the oil and gas industry, having worked with Textron, GE, and Siemens. The individual employed Finite Element Analysis (FEA) tools, specifically ANSYS, to address intricate issues within various domains. These domains encompass linear and nonlinear systems, composites, structural vibrations (including modal, harmonic, random, and shock load analysis), rotor dynamics (both lateral and torsional), fatigue and fracture mechanics, as well as implicit and explicit analysis. He serves as a consultant for several firms, such as APSCO (USA), TATA HITACHI (JAPAN), HYDRO (US), Sundyne, Premier pumps, Ruhrpumpen, WOM, Word pumps, among others.
The course was developed with the intention of catering to the needs of graduate students seeking to further their careers in the field of Finite Element Analysis (FEA), as well as design engineers who need to enhance their understanding of FEA principles and independently make informed judgments based on FEA results.
Based on his extensive teaching and research background, he had a comprehensive understanding of the knowledge acquisition process among students inside his educational institution and a keen awareness of the requisite abilities necessary for successful entry into the sector. This served as a source of motivation for him to develop an appropriate curriculum that would bridge the divide between the industry and the educational institution. The curriculum was constructed to allow students to go from foundational concepts to the point where they can solve intricate problems. Numerous individuals from diverse regions around the world derived significant advantages from his instructional sessions, including the incorporation of their own research findings into their Master's and Doctoral dissertations, as well as securing enhanced employment prospects inside reputable organizations. The training program is highly recommended for anybody seeking to transition their career from design to analytical domains.
Dr. Joel noted that a significant number of design engineers rely on expertise in finite element analysis (FEA) to make engineering assessments. He always maintains the belief that possessing a shared understanding of design principles and finite element analysis (FEA) is essential for engineers in order to cultivate the creation of efficient and impactful products. This course aims to enhance the comprehension of design engineers about fundamental and advanced principles in Finite Element Analysis (FEA), enabling them to effectively use FEA techniques in the component design process.
Student feedback
Reviews
Write a public review