Assignment 8 (Report) Model of a cantilever beam on Patran/Nastran BY: AUMAIR AZEEM MALIK (140919) DECEMBER 5, 2014 INSTITUTE OF AVIONICS & AERONAUTICS Air University, Islamabad
Dec 25, 2015
Assignment 8 (Report) Model of a cantilever beam on Patran/Nastran
BY: AUMAIR AZEEM MALIK (140919)
DECEMBER 5, 2014 INSTITUTE OF AVIONICS & AERONAUTICS
Air University, Islamabad
Task:
Using PATRAN / NASTRAN commercially available software, model a cantilever single cell
beam (analogous to aircraft wing) and apply a given Torque at its free end.
Data:
Dimensions: Height: 20 cm
Width: 30 cm
Length: 100 cm
Thickness: 0.2 cm
Material: Aluminum
Modulus of Rigidity (E) = 70 GPa
Poisson’s Ratio = 0.3
Applied Load: -1000 N at length = 100 cm
Multi Point Constraints: 11 RBE-2 elements to prevent de-shaping of beam
Properties: 2D Shell
Setting Tolerances
Constructing Geometry
Meshing the beam
Meshing completed
Creating RBE-2 Elements
Creating RBE-2 Elements
RBE-2 Elements completed
Applying Boundary Conditions (Loads & Constraints)
Applying Material Properties
Analyzing the model in Nastran and Accessing .xdb file
Results Variation of Axial Displacement along the length of beam Variation of Axial Displacement around the beam Variation of Axial Stress along the length of beam Variation of Axial Stress around the beam Variation of Shear Flow along the length of beam Variation of Shear Flow around the beam
Warping ….
Displacement Plot
Displacement Plot
Variation of Axial Displacement along the length of beam
Variation of Axial Displacement around the beam
Variation of Axial Stress along the length of beam
Variation of Axial Stress around the beam
Variation of Shear Flow along the length and around the beam