EngineeringModule II: Power Screws Types of screw threads Torque required to raise and lower the load Efficiency of square threaded screw Overhauling and self-locking screw Stresses in power screw Design of screw jacks
Similar to EngineeringModule II: Power Screws Types of screw threads Torque required to raise and lower the load Efficiency of square threaded screw Overhauling and self-locking screw Stresses in power screw Design of screw jacks
EngineeringModule II: Power Screws Types of screw threads Torque required to raise and lower the load Efficiency of square threaded screw Overhauling and self-locking screw Stresses in power screw Design of screw jacks
1.
Introduction to Engineering
Mechanics
•Course: Engineering Mechanics
• Module: Statics
• Lecture 1: Introduction to Engineering
Mechanics – I
• Instructor: Prof. K. Ramesh
• Institution: IIT Madras
• • Explore the history and evolution of
mechanics
2.
Engineering Through Ages
•• From 2500 B.C. to modern day: structures
like Parthenon, Eiffel Tower, Dubai bridges
• • Evolution in design complexity and materials
• • Engineering as a roller-coaster of knowledge
and emotion
3.
Roller Coaster Physics
•• Learning as a joyful experience
• • Explained via Conservation of Energy
• • Heights designed for looping with simplified
models neglecting friction
4.
Engineering Failures andLessons
• • Tacoma Narrows Bridge failure (1940)
• • Oscillations caused by wind: period ~5s,
speed 42 mph
• • Importance of learning from failures
• • Torsional vibration led to collapse
