Material and Geometric Properties Material and Geometric Properties of the Boeing 767-200ERof the Boeing 767-200ER

Oscar ArdilaOscar Ardila

Civil EngineeringCivil Engineering

Purdue UniversityPurdue University

ObjectivesObjectives

Define material properties for the different parts Define material properties for the different parts included in the LS-Dyna B767 modelincluded in the LS-Dyna B767 model

Assign section properties to beam and shell Assign section properties to beam and shell elements in the plane modelelements in the plane model

Include mass contribution due to non-structural Include mass contribution due to non-structural components not modeledcomponents not modeled

Plane Parts ModelingPlane Parts Modeling

Element types used in the B767 model:Element types used in the B767 model:

Fuselage and wing skin, ribs and spars (wings, Fuselage and wing skin, ribs and spars (wings, tail), passenger cabin floor, etc, are modeled tail), passenger cabin floor, etc, are modeled using using shell elementsshell elements

Plane Parts ModelingPlane Parts ModelingElement types used in the B767 modelElement types used in the B767 model::

Floor supports, as well as fuselage rings and ribs Floor supports, as well as fuselage rings and ribs are modeled using are modeled using beam elementsbeam elements

Engine core and landing gear are modeled with Engine core and landing gear are modeled with solid solid elementselements (hexahedrons) (hexahedrons)

Plane Parts ModelingPlane Parts Modeling

Sectional Properties of Elements:Sectional Properties of Elements:

Limitations on available information regarding structural Limitations on available information regarding structural details of plane components make it difficult to define details of plane components make it difficult to define accurately beam element section dimensions and shell accurately beam element section dimensions and shell element thicknesselement thickness

Selected values must reflect the actual mass and Selected values must reflect the actual mass and stiffness distribution of the plane structurestiffness distribution of the plane structure

Materials used in the B767 model:Materials used in the B767 model:

Most of the components of the plane structure Most of the components of the plane structure are made of are made of aluminumaluminum: fuselage and wing skin, : fuselage and wing skin, ribs and spars, floor beams, fuselage ringsribs and spars, floor beams, fuselage rings

Engine core, landing gear supports, and skin at Engine core, landing gear supports, and skin at the regions where the fuselage meets the wings the regions where the fuselage meets the wings and the tail are modeled as and the tail are modeled as titaniumtitanium parts parts

No important use of No important use of steelsteel for part modeling for part modeling

Plane Parts ModelingPlane Parts Modeling

General InformationGeneral Information

Target Mass: 83300 Kg Target Mass: 83300 Kg

Purdue B767 Model Mass: Purdue B767 Model Mass: ~83000 Kg~83000 Kg

Major mass contributions come from the Major mass contributions come from the engines (core), fuselage (skin, rings and engines (core), fuselage (skin, rings and ribs) and wings (skin, ribs and spars) ribs) and wings (skin, ribs and spars)

Empty Weight of the B767-200EREmpty Weight of the B767-200ER

Empty Weight of the B767-200EREmpty Weight of the B767-200ER

Mass Contribution of Most Relevant Parts Mass Contribution of Most Relevant Parts

Structural ElementsStructural Elements

Wing Structure (12%)Wing Structure (12%)Ribs: 4600 Kg Ribs: 4600 Kg Spars: Spars: ~50~5000 Kg00 Kg

Fuselage Structure (13%)Fuselage Structure (13%)Rings: 6300 KgRings: 6300 KgRibs: ~50Ribs: ~5000 Kg00 Kg

Floor Supports (8%)Floor Supports (8%)Floor beams: ~1500 KgFloor beams: ~1500 Kg

Longitudinal supports: 5600 KgLongitudinal supports: 5600 Kg

Others:Others:

Skin (25%)Skin (25%)Fuselage: ~12000 Kg Fuselage: ~12000 Kg Wings and Tail: 8500 KgWings and Tail: 8500 Kg

Engines (10%)Engines (10%)Core: ~7500 Kg (2 engines)Core: ~7500 Kg (2 engines)Fan and Housing: 1200 KgFan and Housing: 1200 Kg

Some elements not included in the model make important Some elements not included in the model make important contributions to the total mass of the plane:contributions to the total mass of the plane:

A/C Units: A/C Units: ~1500 Kg~1500 Kg

DoorsDoors: : ~1500 Kg~1500 Kg

Overhead bins: 1000 KgOverhead bins: 1000 Kg

Cargo containers and seats: >3000 KgCargo containers and seats: >3000 Kg

This mass is included in the model by assigning uniform This mass is included in the model by assigning uniform

non-structural mass to the floor shell elementsnon-structural mass to the floor shell elements

Empty Weight of the B767-200EREmpty Weight of the B767-200ER

AdditionalAdditional Mass Contributions Mass Contributions