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This seminar is a course designed to systematically organize mechanical dynamics calculations from the basics for "selecting under non-failure conditions" targeting commercial machine elements (shafts, bolts, couplings, gears, clutches, brakes, etc.).

In practice, machine elements are generally selected from catalog items rather than designed, but this requires a basic procedure of organizing load conditions dynamically, evaluating them as stress, and comparing them with allowable values.

In this seminar, we consistently explain the minimum mechanical dynamics necessary for this selection process—covering everything from bolts and shafts to transmission systems, clutches, brakes, and springs—to cultivate the foundation of judgment skills for practical use.

• Organize the overall picture of mechanical design at a basic level
• Understand the roles of materials, processing, machine elements, and structures
• Learn the basics of actual design rather than abstract theory
• Acquire the minimum necessary techniques for the field
• Systematic structure understandable even for beginners

• Basic structure of mechanical dynamics for element selection (Load → Stress → Allowable Value)
• Selection calculation concepts for basic elements such as bolts and shafts
• Basic calculations for torque, bending, and torsion of rotating shafts and couplings
• Basic strength evaluation methods for transmission systems like belts and gears
• Summary of basic selection calculations for clutches, brakes, and springs

• 1. Positioning of Mechanical Dynamics for Machine Element Selection
  
  1-1 Machine element work is "selection," not "design." However, dynamics calculations used in "design" are essential for "selection."
  1-2 Organizing necessary vs. unnecessary information for selection
  1-3 Role of dynamics calculations (usage as a tool to verify feasibility conditions)
  1-4 Basic structure: Load → Stress → Allowable value comparison
  
  2. Strength and Selection Calculations for Screws and Bolts
  
  2-1 Basic flow of bolt selection
  2-2 Formulas for axial load only
  　　Example 1, Example 2
  2-3 Combined stress when axial force + torsion act simultaneously
  　　Example 1, Exercise 1
  2-4 Basic calculations for shear loads
  　　Example 1
• 
  3. Selection Calculations for Rotating Shafts (Most Important Foundation)
  
  3-1 Methods for organizing loads acting on shafts
  3-2 Shaft diameter calculation for torsion only
  　　• Solid shafts
  　　• Hollow shafts
  　　　Example 1
  3-3 Shaft diameter calculation for bending only
  　　　Example 1: Determining diameter by combined stress
  　　　Example 1, Example 2
• 
  4. Selection of Shaft Couplings and Transmission Shafts
  
  4-1 Role and selection conditions of shaft couplings
  4-2 Basics of selection calculation by torque
  4-3 Concept of determining shaft diameter for transmission shafts
  　　　Example 1
  4-4 Concept of safety factors (how to handle them in selection)
• 
  5. Basic Selection Calculations for Belt and Gear Drives
  
  5-1 Organizing dynamic models in transmission systems
  5-2 Tension and power calculations for belt drives
  　　 Example 1
  5-3 Basic strength evaluation of gear drives
  　　 Example 1, Example 2
  5-4 Understanding the flow of loads in power transmission systems
  
  6. Selection Calculations for Clutches and Brakes
  
  6-1 Basic structure and selection conditions of friction clutches
  6-2 Transmission torque calculation for single-plate clutches
  6-3 Basic calculation of maximum pressing force
  6-4 Braking torque calculation for brakes 　　
• 　　　Example 1
  6-5 Basic procedure for clutch and brake selection 　　
• 　　　Example 1, Exercise 1
• 
  7. Basics and Selection Calculations for Springs
  
  7-1 Role of springs (relationship between force and displacement)
  7-2 Basic formulas for spring constant and load
  7-3 Relationship between stress and deflection
  　　　Example 1
  
• 8. Q&A Session