# Ch 2: Stress & Strain in Engineering

### About This Chapter

## Stress & Strain in Engineering - Chapter Summary

This chapter fleshes out different types of stress and strain found in engineering. You'll also learn about forms of strength, resistance, resilience, and hardening. The dashboard feature can help you stay organized through this extensive chapter, allowing you to take a look at your recent studying activity and studying progress at any time. This chapter can help you get a firmer grasp on flow stress, residual stress, elastic stress and help you comprehend the following:

- Comparing types of stress and strain in engineering
- Examining theories behind stress
- Analyzing equations and formulas related to engineering stress
- Understanding stress resistance for different materials
- Determining yield points and coefficients for stress and strain

### 1. Engineering Stress: Definition & Equation

Engineering stress involves internal particle reactions causing force and failure. Explore the definition, equation, and causes of stress and discover the types of stress including compression, tension, shear, bending, torsion, and fatigue.

### 2. What is Shear Stress? - Definition, Equation & Units

Shear stress is how much force per unit area is placed perpendicular to an axle. Explore the definition, equation, and units of shear stress, and discover examples of shear stress and how it differs from shear force.

### 3. Maximum Shear Stress: Theory & Formula

An important concept to understand when assessing forces on a structural member is the maximum shear stress. Learn about this force and examine the formula as it applies to a section is rotated under axial load.

### 4. Torsional Shear Stress Formula

Structural engineering requires a firm understanding of the torsional shear stress formula. Review the definition of torsional shear stress and discover the formulas needed to calculate torsional shear stress, polar moment of inertia, and the shear stress of a cantilevered beam.

### 5. What is Thermal Stress? - Definition & Equation

Thermal stress occurs when metal structures expand with changes in temperature. Learn all about thermal stress and the different formulas used to calculate it.

### 6. What is Yield Stress? - Definition & Formula

Yield stress defines the point at which an object changes from experiencing elastic deformation to plastic deformation. Explore the definition of yield stress, learn the formula and how to calculate it, and examine the topics of stress, strain, and yield point.

### 7. Modulus of Resilience: Definition & Units

This lesson explains the concept of resilience in materials science, defines the modulus of resilience and shows an example calculation of the modulus of resilience.

### 8. Fatigue Strength: Definition Equation & Coefficient

This lesson discusses the concept of fatigue strength and fatigue life using an example of a cantilever beam. A simple method to estimate it for a given material is shown, where the number of cycles to failure is related to the stress amplitude.

### 9. Stress Strain Curve: Definition & Yield Point

A stress-strain curve provides a visualization of how a material responds to a load or force. Discover the definition of the stress-strain curve and its two types (brittle and ductile) as well as how to determine a material's ultimate strength.

### 10. Shear Strain: Definition & Equation

Shear strain is an important concept to know in engineering. Learn the definition of shear strain, discover the equation to calculate it, and see how to apply it using a specific example.

### 11. The Difference Between Brittle & Ductile Fractures

Materials that exist throughout the world are used for certain purposes in engineering based on the ability to bend or be deformed. Learn about the difference and preference between brittle and ductile fractures.

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### Other Chapters

Other chapters within the Introduction to Engineering course

- Materials & Properties in Engineering
- Temperature & Heat in Engineering
- Tools & Processes in Engineering
- Pressure in Engineering
- Tolerance in Engineering
- Basics of Structural Engineering
- Basics of Chemical Engineering
- Electricity in Engineering
- Electrodynamics
- Physics Concepts in Engineering
- Acoustics in Engineering
- Building Construction & Properties in Engineering
- Electrical Interference in Engineering