RodElement module

Classes for failure analyisis of rod/bar/beam element.

Revision: 1.0.0 $Date: 24/01/2023 10:43$

History

  1. 1.0.0 - Initial Class Creation

To Do:

  • So many

class RodElement.RodElem(mat, area, stress, length)[source]

Bases: object

Class for failure analysis of rod elements

Examples:

Example of calculation of Margin of Safety.

>>> elem = RodElem(mat, aresa, stress, length)
>>> elem.calc_ms()
>>> elem.get_ms()

Documentation last updated: Jan. 24, 2023 - Shugo Date

__init__(mat, area, stress, length)[source]

RodElem Class Initialization.

Parameters

  • mat (dict) – dictionary of material properties

  • area (float) – area of cross-section

  • stress (pd.DataFrame) – stress

  • length (float) – length in longitudinal direction

Returns

None

Documentation last updated: Jan. 24, 2023 - Shugo Date

calc_ms()[source]

Administrator of MS calculation.

Comment and uncomment lines depending on your case

Parameters

None –

Returns

None

Note

Selection of failure should be an input. Can someone please refactor it?

Documentation last updated: Jan. 24, 2023 - Shugo Date

calc_ms_compression()[source]

Calculate MS for compressive strength.

Parameters

None –

Returns

margin of safety

Return type

ms (float)

Documentation last updated: Jan. 24, 2023 - Shugo Date

calc_ms_tension()[source]

Calculate MS for tensile strength.

Parameters

None –

Returns

margin of safety

Return type

ms (float)

Documentation last updated: Jan. 24, 2023 - Shugo Date

calc_ms_buckling_e()[source]

Calculate MS for Euler buckling strength.

Parameters

None –

Returns

margin of safety

Return type

ms (float)

Documentation last updated: Jan. 24, 2023 - Shugo Date

calc_ms_buckling_j()[source]

Calculate MS for Johnson buckling strength.

Parameters

None –

Returns

margin of safety

Return type

ms (float)

Note

\(C\) represents yield stress in case of metal. The use of Johnson buckling and the selection of \(C\) are worthy of consideration. Currently, an industry is convinced with the use of compressive strength.

Documentation last updated: Jan. 24, 2023 - Shugo Date

calc_ms_strain_oht()[source]

Calculate MS for OHT strain criteria.

Parameters

None –

Returns

MS for OHT strain criteria

Return type

ms (float)

Documentation last updated: Jan. 24, 2023 - Shugo Date

calc_ms_strain_ohc()[source]

Calculate MS for OHC strain criteria.

Parameters

None –

Returns

MS for OHC strain criteria

Return type

ms (float)

Documentation last updated: Jan. 24, 2023 - Shugo Date

calc_ms_strain_cai()[source]

Calculate MS for CAI strain criteria.

Parameters

None –

Returns

MS for CAI strain criteria

Return type

ms (float)

Documentation last updated: Jan. 24, 2023 - Shugo Date

get_ms()[source]

Output function of MS data

Parameters

None –

Returns

dictionary of MSs

Return type

ms (dict)

Documentation last updated: Jan. 23, 2023 - Shugo Date

class RodElement.BeamElem(mat, area, i11, i22, i12, j, stress, length)[source]

Bases: object

Class for failure analysis of beam elements

Examples:

Example of calculation of Margin of Safety.

>>> elem = BeamElem(mat, aresa, i11, i22, i12, stress, length)
>>> elem.calc_ms()
>>> elem.get_ms()

Note

This class should inherit from the rod class.

Documentation last updated: Jan. 24, 2023 - Shugo Date

__init__(mat, area, i11, i22, i12, j, stress, length)[source]

BeamElem Class Initialization.

Parameters

  • mat (dict) – dictionary of material properties

  • area (float) – area of cross-section

  • i11 (float) – moment of inertia of area in strong axis

  • i22 (float) – moment of inertia of area in weak axis

  • i12 (float) – product of inertia of area

  • stress (pd.DataFrame) – stress

  • length (float) – length in longitudinal direction

Returns

None

Documentation last updated: Jan. 24, 2023 - Shugo Date

calc_ms()[source]

Administrator of MS calculation.

Comment and uncomment lines depending on your case

Parameters

None –

Returns

None

Note

Selection of failure should be an input. Can someone please refactor it?

Documentation last updated: Jan. 24, 2023 - Shugo Date

calc_ms_compression()[source]

Calculate MS for compressive strength.

Parameters

None –

Returns

margin of safety

Return type

ms (float)

Documentation last updated: Jan. 24, 2023 - Shugo Date

calc_ms_tension()[source]

Calculate MS for tensile strength.

Parameters

None –

Returns

margin of safety

Return type

ms (float)

Documentation last updated: Jan. 24, 2023 - Shugo Date

calc_ms_buckling_e()[source]

Calculate MS for Euler buckling strength.

Parameters

None –

Returns

margin of safety

Return type

ms (float)

Documentation last updated: Jan. 24, 2023 - Shugo Date

calc_ms_buckling_j()[source]

Calculate MS for Johnson buckling strength.

Parameters

None –

Returns

margin of safety

Return type

ms (float)

Note

\(C\) represents yield stress in case of metal. The use of Johnson buckling and the selection of \(C\) are worthy of consideration. Currently, an industry is convinced with the use of compressive strength.

Documentation last updated: Jan. 24, 2023 - Shugo Date

get_ms()[source]

Output function of MS data

Parameters

None –

Returns

dictionary of MSs

Return type

ms (dict)

Documentation last updated: Jan. 23, 2023 - Shugo Date