14:125:208: Introduction to Biomechanics
Homework Assignment #5
Spring 2011
Due 3/10/11
Problem 1:
Two cylinders are subjected to an equally distributed load F = 6 kN in two different
configurations. The aluminum (gray) rod (E = 69 GPa) has a diameter of
125:201 Introduction to Biomedical Engineering
Biomechanics, Homework #3
Due Nov 1, 2010
Problem 1:
Using this Russell Traction setup (=50 deg), calculate how much weight (Fwt) it would take to
fracture the tibia (in tension) assuming nothing else breaks
125:201 Introduction to Biomedical Engineering
Biomechanics, Homework #2
Due Monday October 25th
Problem 1
A) Find the joint reaction force, R, and the abductor muscle force, M, in the right hip when
a woman stands on her right leg while carrying a 25kg s
125:201 Introduction to Biomedical Engineering
Biomechanics, Homework #3
Due Nov 1, 2010
Problem 1:
Using this Russell Traction setup (=50 deg), calculate how much weight (Fwt) it would take to
fracture the tibia (in tension) assuming nothing else breaks
14:125:208: Introduction to Biomechanics
Homework Assignment #8
Spring 2011
Due 4/21/10
Problem 1:
Given the 2D state of stress above find the principal stresses and principal planes/directions using:
A) The derived equations
B) Mohr's Circle
C) Eigenvalu
14:125:208: Introduction to Biomechanics
Homework Assignment #9
Spring 2011
Due 5/02/11
Problem 1: Given a constant applied force, draw the creep functions (deformation v. time) for the
following models;
A. Maxwell model
B. Kelvin model
C. 3-parameter Sol
14:125:208: Introduction to Biomechanics
Homework Assignment #9
Spring 2011
Due 5/02/11
Problem 1: Given a constant applied force, draw the creep functions (deformation v. time) for the
following models;
A. Maxwell model
B. Kelvin model
C. 3-parameter Sol
Stress Analysis
In an experimental test, the magnitude of load P is 300N.
1. Find the stresses at location A and B.
2. Will the answer change if the length of 100 mm is increased to
150 mm? If yes why, if not why not?
3. At what load this structure will f
Clinical Problem
Manual wheelchair users (MWUs) will
inevitably develop shoulder pain. 100% of
MWUs will experience shoulder pain 15years post-injury.1
1. Gellman, H., I. Sie, and R. Waters, Late Complications of the Weight-Bearing Upper Extremity in the
14:125:208: Introduction to Biomechanics
Homework Assignment #8
Spring 2011
Due 4/21/10
Problem 1:
Given the 2D state of stress above find the principal stresses and principal planes/directions using:
A) The derived equations
B) Mohr's Circle
C) Eigenvalu
14:125:208: Introduction to Biomechanics
Homework Assignment #7
Spring 2011
Due 4/14/11
Problem 1: From Ozkaya and Nordin, do Problem 8.3.
Problem 2: From Ozkaya and Nordin, do Problem 8.4.
In addition to (a)-(e), add the following:
(f)
find the maximum c
14:125:208: Introduction to Biomechanics
Homework Assignment #7
Spring 2011
Due 4/14/11
Problem 1: From Ozkaya and Nordin, do Problem 8.3.
4
rO
.02 4
= 2.5 10 7 m 4
2
2
Tl
3000 Nm 0.1m
l Tr l
b) = = o =
=
= 0.12 Rad = 6.8
r0 GJro GJ 10GPa 2.5 10 7 m 4
Tr
14:125:208: Introduction to Biomechanics
Homework Assignment #5
Spring 2011
Due 3/10/11
Problem 1:
Two cylinders are subjected to an equally distributed load F = 6 kN in two different
configurations. The aluminum (gray) rod (E = 69 GPa) has a diameter of
14:125:208: Introduction to Biomechanics
Homework Assignment #4
Spring 2011
Due 2/21/11
Problem 1: (Anatomical Terms)
1) The _ plane divides the body
into right and left halves.
6) The scapula (shoulder blade) is
_ to the vertebral column.
A) transverse
B
14:125:208: Introduction to Biomechanics
Homework Assignment #4
Spring 2010
Due 2/22/10
Problem 1: (Anatomical Terms)
1) The _ plane divides the body
into right and left halves.
A) transverse
B) sagittal
C) coronal
D) oblique
E) para-sagittal
2) The armpi
14:125:208: Introduction to Biomechanics
Homework Assignment #3
Spring 2011
Due 2/10/11
Problem 1: (Anthropometric Data) Download the spreadsheet Body spreadsheet.xls from the course
website on Sakai and complete the spreadsheet for you and 2 other people
125:201 Introduction to Biomedical Engineering
Biomechanics, Review Problems
To be discussed Nov 1, 2010
Problem 1:
You are testing a biomechanical sensor for measuring muscle and joint reaction forces during human
motion. You are testing your device by f
125:201 Introduction to Biomedical Engineering
Biomechanics, Review Problems
To be discussed Nov 1, 2010
Problem 1:
You are testing a biomechanical sensor for measuring muscle and joint reaction forces during human
motion. You are testing your device by f