ME471 Exam 2
NAME
Closed book and notes. May use ONE 8.5x11 in page of your own notes
Problem 1
Referring to the gure, which of the stress
components ox oy oz Txy txz or Tyz in the stress
0' T T
x xy x2
matrix 6 = Txy Oy Tyz is NOT zero?.
sz Tyz
Spring 2006 ME471 Design-build-test Project AUTONOMOUS WALKING MACHINE
Motivation
This project phase of the course capitalizes upon the design creativity lectures and the design-formanufacture lectures presented in ME371 and ME471, and it is structur
ME471 Finite Element Project (Due at the beginning of class time Wednesday April 26, 2006)
In this project you are asked to use a commercial finite element package (ANSYS) to perform a static stress analysis of a bracket in two different configuratio
ME471
MECHANICAL DESIGN II SPRING 2006
Section 2 MWF 1:50-2:40 pm Room 2205 EB
Section 1 MWF 8:00-8:50 am Room 2243 EB
Catalog Description: Engineering design of machine elements and mechanical systems. Computer based analysis in support of design
STATIC FAILURE THEORIES
biaxial stress state, 3=0 Label 1 as the larger of the principal stresses i.e., 1 > 2
SF = Safety Factor MAXIMUM NORMAL STRESS (use for brittle materials) " Failure will occur if the largest normal stress exceeds the ultimate
COMBINATION OF LOADING MODES Suppose part is loaded in different modes: axial, bending, torsion. Then you may have nominal stresses (i.e., before any correction factors are used)
a m From axial load: (nominal) bending bending m From bending load: a
ME 471 Design Day Competition: Flow of Events TIME: Inspection Time Present your AWM at the Inspection Desk. You will be asked to put the AWM inside the 15x15x30 cm measuring box. A judge will check that you are using approved parts (motor, battery)
Cover Page Finite Element Project BRACKET DESIGN
AUTHOR: _STUDENT ID _ RESULTS Problem 1: Reference Design Coarse Mesh
Amount of material (in ) Number of Elements Number of Nodes Disp of point X (in)
3
Fine Mesh
Max Von Mises (psi)
Problem 2: Des
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