UNIT- I
STEADY AND
VARIABLE STRESSES
1. Define
Design.
Creating a plan or drawing for a product using intellectual ability and
scientific knowledge is called design. A
product so designed should permit economical manufacture, and it should meet
the specification requirements.
2. What are the
classifications of machine design?
a)
Adaptive design
b)
Development design
c)
New Design
3. What are the
classifications of machine design based on methods?
a)
Rational design
b)
Empirical design
c)
Industrial Design
d)
Optimum design
e)
System Design
f)
Element design
g)
Computer aided design
4. What are the
general considerations to be considered in designing of a machinecomponent?
1.
Type of load
and stresses caused by the load
2.
Motion of the parts or kinematics of machines
3.
Selection of materials
4.
Form and size of the parts
5.
Frictional resistance and lubrication
6.
Convenient and economical features
7.
Use of standard parts
8.
Safety of operation
9.
Workshop facilities
10.
Number of machines to be manufactures
11.
Cost of construction
12.
Assembling
5. Write down
the general procedure in Machine Design.
a)
Recognition of need
b)
Specifications & Requirements – Design
Synthesis
c)
Feasibility Study
d)
Creative Design Synthesis
e)
Preliminary Design and Development
i.
Analysis of forces
ii.
Material Selection
f)
Detailed Design of elements
g)
Prototype Building, Testing and Modification