Answer / dinesh

While making a metallic component or while modifying them
an internal stress will be caused due to drilling,
riveting, hammering, shaving, milling or any similar
actions. This internal stress sometimes may exceed the
yield strength of the metal, so annealing (reheating and
slow cooling) is carried out to release the internal stress
in the component to avoid fracture. This is a process of a
stress analysis .
In simple words
this stress analysis is carried out to avoid the the
material to break by itself.

Answer / nav

Reason for STRESS ANALYSIS being conducted on newly
designed component or modified component is

1.To check the reliability of the structure/component or
part that has been fixed new over the load spectrum.This is
further done by calculating the MS(margin of safety =
(Allowable/Applied)-1)).

2.It helps in calculating the strength of a structure and
optimise to the requirement, which can help in weight
saving.(which is vey imp in aircraft industry).

3.It also helps engineer to understand the behavoiur of the
structure in various nature(tension, compressive) of the
load.

Answer / manohar

a.Stress analysis is performed to determine the requried
size & geometry irrespective of new or modified component.

b.to calculate MS by finding the Ultimate or yield stress.

Answer / pradeep

First of all, stress analysis is very important
irrespective of whether it is newly designed component or
modified component. When a simple automotive or any
component for that matter is to analysed for stress, then
why not airframe assembly which is a very complicated
structure with lot of mechanical components and
subassemblies and subjected to high loading conditions
during its operation.

Basically, stress analysis for any component is required to
understand its physical behaviour, strength of component to
withstand particular load in its life time and serve the
purpose for what it is designed for.

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