Mechanics of Materials
Fall 2018
Dr. Wenchao Zhou
zhouw@uark.edu
(479) 575-7250
The Department of Mechanical Engineering
University of Arkansas, Fayetteville
Learning Objectives
By the end of this class, you will be able to
Introduction
Know the location of my office (MEEG 102B) and phone
What
number (479-575-7250)
Why Know how to use Blackboard
How Name at least 3 of your classmates
Objectives Understand what Mechanics of Materials are about and
Syllabus why you want to study it
Know what will be covered in this course
2
Who am I
Introduction
What
Why
How
Objectives
Syllabus
Cooperative 3D printing: two robots printing an airplane
3
Cooperative 3D Printing
Introduction
What
Why
How
Objectives
Syllabus
A heuristic scaling strategy for using a swarm of robots to
complete a printing job together (printing the landscape of
Arkansas with 16 robots)
4
Who am I
Introduction
What
Why
How
Objectives
Syllabus
A Swarm of Mobile Robots Doing 3D Printing
Vision: Autonomous Digital Additive Contact information
Manufacturing (ADAM) Email: zhouw@uark.edu
Mission: Develop 3D Printing Technologies Phone: (479) 575-7250
that can mass produce at low cost without Office; MEEG 102B
human involvement. Lab: ENRC 4623
5
Who are you
Who are you
Introduction
What
Where were you from
Why
Why are you here (what do you hope to
How
Objectives
accomplish in the class)
Syllabus
Where are you going (what are you
planning to do after graduation)
6
Syllabus
Homework (6) 360 pts
Introduction
Midterm (Topic 1, 2, 3, 4) 320 pts
What
Final: (All topics): 320 pts
Why Class Participation: 50 pts
How
1050 pts
Objectives
Syllabus
Final grade: ≥ 900 ➔ A, 800 ➔ B, 700 ➔ C, 600 ➔ D, <600 ➔ F
▪ Attendance: Mandatory for exams; Recommended for classes.
▪ Homework: Submit on time!
▪ Academic integrity: Everything you turned in must be YOUR WORK!!
▪ Course organization: Blackboard
▪ Questions: Ask LOTS of questions in class and out of class
7
Background
Introduction
What
Why
How
Objectives
Syllabus
Statics: Force Balance
8
Background
Introduction
What
Why
How
Objectives
Syllabus
Kinematics: Motion (Velocity and Acceleration)
9
Background
Introduction
What
Why
How
Objectives
Syllabus
Dynamics: Influence of force on motion
(rigid bodies)
10
Background
Introduction
What
Why
How
Objectives
Syllabus
Mechanics of Materials: materials are
not rigid bodies but deformable
11
Why Mechanics of Materials
Introduction
What
Why
How
Objectives
Syllabus
Materials can fail under force or motion.
12
Why Mechanics of Materials
Have you ever wondered why Andrew Carnegie
Introduction
used steel to for the Eads Bridge project across the
What
Mississippi River at St. Louis, Missouri ?
Why
How
Objectives
Syllabus
13
Why Mechanics of Materials
Have you ever wondered why we cannot build a
Introduction
space elevator yet?
What
Why
How
Objectives
Syllabus
14
Why Mechanics of Materials
Have you ever wondered why we cannot build a
Introduction
skyscraper using wood as we do for our houses?
What
Why
How
Objectives
Syllabus
15
Why Mechanics of Materials
To answer these questions, we will need to be able to
Introduction
estimate what and how much load the materials
What
are carrying, which will be the focus of this course.
Why
How
Objectives
Syllabus
16
How to study
Understand the concept of stress and strain
Introduction
Learn to derive equations using principles learned
What
in Statics.
Why
How Practice with problems.
Objectives
Syllabus
17
Objectives
The main objective of the study of the mechanics of materials
Introduction is to provide the future engineer with the means of
What analyzing and designing various machines and load bearing
Why structures.
How
Learn the concept of stress and strain and their
Objectives
transformations in different directions
Syllabus
Learn different loads
Learn about beams and columns
Collaborative learning: P2P Learning
18
Introduction
What
Why
How
Objectives
Syllabus
19
