Do You Have These Issues?

This seminar organizes typical patterns of strength problems in mechanical design, from basic concepts of stress to the role of principal stress, Mises stress, and the concept of allowable stress and safety factors. Rather than just theoretical explanations of material mechanics, we will rebuild the foundation from the perspective of "how to prevent problems in the design field" and aim to create an understanding that connects to CAE and practical design work.

・Organize typical causes and structures of strength problems
・Focus on understanding the basic concepts of stress necessary for design
・Clarify the role and distinction between principal stress and Mises stress
・Organize basic ideas about safety factors and allowable stress from a practical perspective
・Understand how to read material data and apply it to design

• 1. Typical Patterns of Strength Problems (Examples of Breakage, Deformation, and Fatigue)
  
  1-1 Three Common Failure Modes in Mechanical Design
  1-2 Common Points of Where Failures Occur
  1-3 Basic Reasons for Differences Between Design and Actual Results
  1-4 How "Unexpected Loads" Arise
  1-5 Key Considerations Learned from Problem Cases
  
  2. What is Stress?
  
  2-1 Basic Definition of Stress
  2-2 Intuitive Understanding of Tension, Compression, and Shear
  2-3 What Does Stress Concentration Mean?
  2-4 Types of Stress that Must Be Covered in Design
  2-5 Basic Knowledge to Understand Before Viewing CAE Results
  
  3. Meaning of Principal Stress and How to Identify Dangerous Areas
  
  3-1 What is Principal Stress?
  3-2 Meaning and Basic Use of Maximum Principal Stress
  3-3 Basic Thinking to Identify Dangerous Areas
  3-4 Relationship with Stress Concentration Areas
  3-5 Basic Approaches Commonly Used in Design
  
  4. When to Use Mises Stress and Common Misuse Patterns
  
  4-1 Basic Meaning of Mises Stress
  4-2 Why It Is Frequently Used in Material Strength Evaluation
  4-3 Relationship with Principal Stress
  4-4 Meaning of Mises Stress Seen in CAE
  4-5 Common Misunderstandings by Beginners
  
  5. Practical Setting of Allowable Stress and Safety Factors
  
  5-1 What is Allowable Stress? (Its Relationship with Material Strength)
  5-2 Basic Concept of Safety Factor
  5-3 Why Safety Factors Are Needed
  5-4 Simple Methods to Determine Safety Factors
  5-5 Common Guidelines Used in Design
  
  6. How to Use Material Data
  
  6-1 Basic Structure of Material Data Sheets (Yield Strength, Tensile Strength)
  6-2 Differences in the Meaning of Numbers (Yield and Fracture)
  6-3 Basic Understanding of How Temperature and Processing Can Affect Data
  6-4 Why Using Data Directly Can Be Dangerous
  6-5 Key Points to Pay Attention to
  
  7. Methods of Stress Visualization
  
  7-1 Stress Visualization and Stress Distribution Visualization Using FEM
  7-2 Identifying Stress Concentration and Dangerous Areas Using FEM
  7-3 Stress Visualization in Practical Design (How to Read and Use CAE Results)
  
  8. Q&A