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Material and Geometric Properties of the Boeing 767-200ER. Oscar Ardila Civil Engineering Purdue University. Objectives. Define material properties for the different parts included in the LS-Dyna B767 model Assign section properties to beam and shell elements in the plane model

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material and geometric properties of the boeing 767 200er

Material and Geometric Properties of the Boeing 767-200ER

Oscar Ardila

Civil Engineering

Purdue University

objectives
Objectives
  • Define material properties for the different parts included in the LS-Dyna B767 model
  • Assign section properties to beam and shell elements in the plane model
  • Include mass contribution due to non-structural components not modeled
plane parts modeling
Plane Parts Modeling

Element types used in the B767 model:

  • Fuselage and wing skin, ribs and spars (wings, tail), passenger cabin floor, etc, are modeled using shell elements
plane parts modeling4
Plane Parts Modeling

Element types used in the B767 model:

  • Floor supports, as well as fuselage rings and ribs are modeled using beam elements
  • Engine core and landing gear are modeled with solid elements (hexahedrons)
plane parts modeling5
Plane Parts Modeling

Sectional Properties of Elements:

  • Limitations on available information regarding structural details of plane components make it difficult to define accurately beam element section dimensions and shell element thickness
  • Selected values must reflect the actual mass and stiffness distribution of the plane structure
plane parts modeling6
Plane Parts Modeling

Materials used in the B767 model:

  • Most of the components of the plane structure are made of aluminum: fuselage and wing skin, ribs and spars, floor beams, fuselage rings
  • Engine core, landing gear supports, and skin at the regions where the fuselage meets the wings and the tail are modeled as titanium parts
  • No important use of steel for part modeling
empty weight of the b767 200er
Empty Weight of the B767-200ER

General Information

  • Target Mass: 83300 Kg
  • Purdue B767 Model Mass: ~83000 Kg
  • Major mass contributions come from the engines (core), fuselage (skin, rings and ribs) and wings (skin, ribs and spars)
empty weight of the b767 200er mass contribution of most relevant parts
Structural Elements

Wing Structure (12%)

Ribs: 4600 Kg

Spars: ~5000 Kg

Fuselage Structure (13%)

Rings: 6300 Kg

Ribs: ~5000 Kg

Floor Supports (8%)

Floor beams: ~1500 Kg

Longitudinal supports: 5600 Kg

Others:

Skin (25%)

Fuselage: ~12000 Kg

Wings and Tail: 8500 Kg

Engines (10%)

Core: ~7500 Kg (2 engines)

Fan and Housing: 1200 Kg

Empty Weight of the B767-200ERMass Contribution of Most Relevant Parts
empty weight of the b767 200er additional mass contributions
Empty Weight of the B767-200ERAdditionalMass Contributions
  • Some elements not included in the model make important contributions to the total mass of the plane:

A/C Units: ~1500 Kg

Doors: ~1500 Kg

Overhead bins: 1000 Kg

Cargo containers and seats: >3000 Kg

  • This mass is included in the model by assigning uniform non-structural mass to the floor shell elements