EngiRef / Materials Engineering Formula
True Strain
True Strain: True strain from engineering strain. A Stress & Strain formula in materials engineering. Variables εₜ and εₑ, each with SI and imperial units.
Stress & Strain
Specification
- Name
- True Strain
- Discipline
- materials
- Category
- Stress & Strain
- LaTeX
- \varepsilon_t = \ln(1 + \varepsilon_e)
- Description
- True strain from engineering strain
- Conditions
- Uniform deformation before necking
- Can solve for
- εₜ, εₑ
- Tags
- true, strain, engineering, logarithmic
Variables
| Symbol | Name | Unit | Si Unit |
|---|---|---|---|
| εₜ | True Strain | - | - |
| εₑ | Engineering Strain | - | - |
Common questions
- What is the True Strain formula?
- True strain from engineering strain. It sits under Stress & Strain, Materials engineering in the EngiRef reference.
- What do the symbols in the True Strain formula mean?
- In True Strain, εₜ is true strain; εₑ is engineering strain.
- When does the True Strain formula apply?
- True Strain holds under this condition: Uniform deformation before necking.