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
h) Detailed drawing and design for production
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