Udemy - Design against Fluctuating loads

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Free Download Udemy - Design against Fluctuating loads
Published: 4/2025
MP4 | Video: h264, 1280x720 | Audio: AAC, 44.1 KHz, 2 Ch
Language: English | Duration: 2h 55m | Size: 3.31 GB
Stress concentration and its factors, Reduction of stress concentration factors, fluctuating stresses, fatigue failures,

What you'll learn
Understand Stress Concentration and its Influencing Factors
Analyze Fatigue Failure Mechanisms and Design for Endurance
Apply Fatigue Design Methods and Safety Criteria
Assess and Mitigate Fatigue Damage under Combined Stresses
Requirements
Fundamentals of Solid Mechanics and Material Strength
Introduction to Engineering Materials and their Properties
Statics and Dynamics of Rigid Bodies
Statics and Dynamics of Rigid Bodies
Description
Stress concentration refers to the localized increase in stress in a material or structural component, which occurs due to geometric discontinuities such as holes, sharp corners, or notches. These irregularities cause the stress to be higher in the vicinity of the discontinuity compared to the surrounding areas. Factors influencing stress concentration include the shape and size of the discontinuity, the material properties, and the loading conditions. Reducing stress concentration factors involves smoothening the transitions, using fillets, and employing stress-relief techniques, such as peening or controlled heat treatment.Fluctuating stresses are those that vary in magnitude and direction over time, typically seen in cyclic loading conditions. These stresses are a primary cause of fatigue failure, which occurs when a material fails due to repeated loading, even if the applied load is below the material's ultimate tensile strength. The endurance limit is the stress level below which a material can endure an infinite number of loading cycles without failure. The S-N curve (stress vs. number of cycles curve) represents the relationship between cyclic stress amplitude and the number of cycles to failure, providing insights into material fatigue behavior.Notch sensitivity quantifies how much a material's fatigue strength decreases when a notch is present. The Endurance strength-modifying factors account for various real-world conditions that may influence the material's fatigue performance, such as surface finish, temperature, or loading frequency. Reversed stresses refer to loads that alternate between tension and compression.Designing for finite or infinite life involves selecting materials and dimensions that ensure fatigue failure does not occur during the expected service life. Cumulative damage refers to the gradual degradation of material properties due to repeated loading, and various failure criteria are used to predict when a component will fail.
Who this course is for
Mechanical Engineering Students
Aerospace Engineering Students
Civil Engineering Students (Specializing in Structural Engineering)
Automotive Engineering Students
Professionals and Practitioners in Mechanical, Civil, and Aerospace Industries
Students of Materials Science and Engineering
Research and Development Engineers
Homepage:

https://www.udemy.com/course/design-against-fluctuating-loads/

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