mechanics of materials class notes
Post on 06-Apr-2018
227 Views
Preview:
TRANSCRIPT
-
8/3/2019 Mechanics of Materials Class Notes
1/20
Mechanics of materials
Hareesha N G
LecturerDepartment of Aeronautical Engg
-
8/3/2019 Mechanics of Materials Class Notes
2/20
Introduction
Mechanics of materials is a branch of applied
mechanics that deals with the behavior of solid
bodies subjected to various types of loading
A thorough understanding of mechanical
behavior is essential for the safe design of all
structures
Mechanics of materials is a basic subject in
many engineering fields
-
8/3/2019 Mechanics of Materials Class Notes
3/20
Strength
Strength is the ability of a material to resist
deformation. The strength of a component is
usually considered based on the maximum
load that can bear before failure is apparent.
-
8/3/2019 Mechanics of Materials Class Notes
4/20
Basic concepts
Load
Force
Weight Mass
System of units
SI, MKS, CGS,IPS, FPS
-
8/3/2019 Mechanics of Materials Class Notes
5/20
Load
Types of load - Point load, UDL, UVL
Types of Load - Static load or dynamic
Sign convention for loads Compressive load,Tensile load
Types of loads - Tangential load, Normal
-
8/3/2019 Mechanics of Materials Class Notes
6/20
Stress
The intensity of force (that is, the force per
unit area) is called the STRESS
Unit ofStress N/mm2 (Pascal) (commonly denoted by the Greek letter ).
Difference between stress and pressure??
A
P!W
-
8/3/2019 Mechanics of Materials Class Notes
7/20
Difference between pressure and
stress
We know that every materials is elastic innature , so when a force is applied it tends todeform and due to this deformation , there is
an internal resistance produced which tends tospring back the molecules to their originalposition and this internal resistance per unitarea is know as STRESS .
Pressure is nothing but force acting on a unitarea .
-
8/3/2019 Mechanics of Materials Class Notes
8/20
Types ofStress
Residual stresses
Pressure Stress
Thermal Stress Fatigue Stress
Tensile Stress
Compressive Stress
Shear Stress
-
8/3/2019 Mechanics of Materials Class Notes
9/20
-
8/3/2019 Mechanics of Materials Class Notes
10/20
-
8/3/2019 Mechanics of Materials Class Notes
11/20
-
8/3/2019 Mechanics of Materials Class Notes
12/20
-
8/3/2019 Mechanics of Materials Class Notes
13/20
-
8/3/2019 Mechanics of Materials Class Notes
14/20
-
8/3/2019 Mechanics of Materials Class Notes
15/20
-
8/3/2019 Mechanics of Materials Class Notes
16/20
-
8/3/2019 Mechanics of Materials Class Notes
17/20
-
8/3/2019 Mechanics of Materials Class Notes
18/20
-
8/3/2019 Mechanics of Materials Class Notes
19/20
-
8/3/2019 Mechanics of Materials Class Notes
20/20
top related