3.4.4. Note on Practical Stress Analysis

Reference: Abbott, Richard. Analysis and Design of Composite and Metallic Flight Vehicle Structures 3 Edition, 2019 

The various material failure criteria defined in this chapter are used for different reasons in a range of different situations. General stress analysis should not always reach for these solutions. Where the stress is predominantly uniaxial a simple comparison to Fty or Ftu  is sufficient, or where the stress is predominantly shear, a comparison to Fsy  or Fsu is sufficient.

The need to go to a plane stress criterion is dependent on the complexity of the stress field and the general magnitude of the stress, and is at the discretion of the engineer.

3.4.4. Note on Practical Stress Analysis

Reference: Abbott, Richard. Analysis and Design of Composite and Metallic Flight Vehicle Structures 3 Edition, 2019 

The various material failure criteria defined in this chapter are used for different reasons in a range of different situations. General stress analysis should not always reach for these solutions. Where the stress is predominantly uniaxial a simple comparison to Fty or Ftu  is sufficient, or where the stress is predominantly shear, a comparison to Fsy  or Fsu is sufficient.

The need to go to a plane stress criterion is dependent on the complexity of the stress field and the general magnitude of the stress, and is at the discretion of the engineer.