1. Material and Geometric Properties of the Boeing 767-200ER Oscar Ardila Civil Engineering Purdue University

2. 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

3. Plane Parts Modeling Element types used in the B767 model: 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

4. 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)

5. 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

6. 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 Plane Parts Modeling

7. 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

8. Empty Weight of the B767-200ER Mass Contribution of Most Relevant Parts 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

9.  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 Empty Weight of the B767-200ER Additional Mass Contributions