AA SEZC method 7.3.2 bending stiffness

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Abbott Aerospace – Analysis Method XL-VIKING Display Your Math in Excel Taken from: Analysis and Design of Composite and Metallic Flight Vehicle Structures Bending Stiffness

Transcript of AA SEZC method 7.3.2 bending stiffness

Page 1: AA SEZC method 7.3.2 bending stiffness

Abbott Aerospace – Analysis Method

XL-VIKINGDisplay Your Math in Excel

Taken from: Analysis and Design of Composite and Metallic Flight Vehicle Structures

Bending Stiffness

Page 2: AA SEZC method 7.3.2 bending stiffness

Abbott Aerospace – Analysis Method

XL-VIKINGDisplay Your Math in Excel

Taken from: Analysis and Design of Composite and Metallic Flight Vehicle Structures

Bending Stiffness

Simple Cantilever

The expression will be given in terms of stiffness per unit width

𝛿 =4 ∙ 𝑃 ∙ 𝐿3

𝐸 ∙ 𝑡3

Where:𝜹 Deflection in the direction of the force vector, in𝑷 Force applied, lb𝑳 Original length of the cantilever beam, in𝑬 Young’s modulus of the member material, psi𝒕 Thickness of the beam, in

The expression for Stiffness can easily be derived as

𝑘 =𝐸 ∙ 𝑡3

4 ∙ 𝐿3

Page 3: AA SEZC method 7.3.2 bending stiffness

Abbott Aerospace – Analysis Method

XL-VIKINGDisplay Your Math in Excel

Taken from: Analysis and Design of Composite and Metallic Flight Vehicle Structures

Bending Stiffness

Guided Cantilever

The expression will be given in terms of stiffness per unit width:

𝛿 =𝑃 ∙ 𝐿3

𝐸 ∙ 𝑡3

The expression for Stiffness can easily be derived as

𝑘 =𝐸 ∙ 𝑡3

𝐿3

AA-SM-260 Tools - Spring Stiffness of Cantilever Beams