Beams, Frames and Machines are the basics concepts of Engineering Mechanics. With the knowledge of these topics, Mechanical Engineering will be hectic.
1. Presntation by :-INDRAJIT DAS
Roll No :- 34900721072
Department :- MECHANICAL
ENGINEERING
Presntation by :-NIHAL BHUIYA
Roll No :- 34900721074
Department :- MECHANICAL
ENGINEERING
BEAMS & TYPES OF BEAMS.
&
FRAMES AND MACHINES.
2. Contentes to be coveredโฆโฆ..
โข Introduction of Beams
โข Types of beams
3. What is Beam?
Beam is a structural member which is acted upon by a system
of external loads at right angles to the axis.
4. Types of beams.
1) Cantilever beam.
2) Simply Supported beam.
3) Trussed beam.
4) Overhanging beam.
5) Fixed beam.
6) Continuous beam.
Based on the type of support. Based on the shape of cross section.
1) I-beam โ Beam with โIโ cross section
2) T-beam โ Beam with โTโ cross section
3) C-beam โ Beam with โCโ cross section
5. Cantilever Beam :- A cantilever beam is fixed at one end and free at other end.
Simply supported beam :- A simply supported beam is supported at both end. One
end of the beam is supported by hinge support and
other one by roller support.
Based on the type of support
6. Trussed beam :- A beam strengthened by adding a cable or rod to form a truss.
Overhanging beams :- An overhanging beam is one in which the supports are not
situated at ends.One or both ends project beyond the
supports.
7. Fixed beam :- This beam is fixed from both ends. It does not allow vertical
movement and rotation of the beam
Continuous beam :- This beam is is similar to simply supported beam expect
more than two support are used on it. One end of it is
supported by hinged support and other one is roller support.
8. Based on the shape of cross section
I-beam :- This beam types have I cross section as shown in figure. It has high
resistance of bending.
T-beam :- Beam with โTโ cross section.
11. :FRAMES AND MECHINES:
Frame: Frames are rigid, stationary structures designed to support loads and must include at
least one multi-force member .
Mechines : machines are non-rigid structure where the parts can move relative to one
another
12. STEP FOR ANALYZING A FRAME OR MACHINE
1. Draw a FBD of the frame or machine and its members ,as
necessary.
Hint:
a) Identify any two-force member
b) Note that forces on contacting surfaces(usally
between a pin and a member ) are equal and
opposite
c) For a joint with more than two members or an
external force, it is advisable to draw a FBD of
the pin.
13. STEP FOR ANALYZING A FRAME OR MACHINE
2. Develop a strategy to apply the
equations of equilibrium to solve for the
unknowns. Look for ways to form single
equations and single unknowns.
14. Q:-The frame supports the 400kg load in the manner shown .Neglect the weight of members compared
with the force induced by the load and determine the all force acting on each of the members.
Solution:-
