Prework Video 8-14

WORKSHOP Pre-work LANDING GEAR STRUT ANALYSIS

NAS120, Pre-work, August 2009 Copyright 2009 MSC.Software Corporation

PW-1

● Workshop Objectives ● Learn the typical workflow of a finite element analysis using

Patran and MD Nastran. ● Perform a start to finish finite element analysis of a solid model.

NAS120, Pre-work, August 2009 Copyright 2009 MSC.Software Corporation

PW-2

● Problem Description ● A landing gear strut has been designed for a new fighter jet.

Determine if the landing gear strut has been designed properly to withstand the landing load.

● E = 30 x 106 psi ●  =0.3 ● Landing Load = 7,080 lb

NAS120, Pre-work, August 2009 Copyright 2009 MSC.Software Corporation

PW-3

● Suggested Exercise Steps 1. Create a new database and name it strut.db 2. Import the strut geometry strut.xmt 3. Mesh the strut to create solid elements with global edge length = 0.5 4. Fix the cylindrical hole at the bottom of the strut 5. Apply a total load of 7080 lb in the negative Y direction to the circular surface at the top of the strut 6. Create an isotropic material with elastic modulus = 30e6 and Poisson's ratio = 0.3 7. Create a physical property, applying your isotropic material to the entire solid

NAS120, Pre-work, August 2009 Copyright 2009 MSC.Software Corporation

PW-4

● Suggested Exercise Steps 8. Run a linear static analysis 9. Attach the results 10. Plot the Von Mises stress on the deformed shape

NAS120, Pre-work, August 2009 Copyright 2009 MSC.Software Corporation

PW-5

NAS120, Pre-work, August 2009 Copyright 2009 MSC.Software Corporation

PW-6