CE/ME 2420Mechanics of Material

Reference Material

You are allowed to use this materialin the Exams and Quizzes.

Alpha al-fahA a.

Beta bay-tahB Ji Gamma gam-ahr 'r

j) Delta del-tahA

Epsilon ep-si-IonE E

... Zeta zay-tahZ " Eta ay-tahH 'It

Theta thay-taB 9

Iota eye-o-taht

Kappa cap-ahK Ie

Lambda lamb-daA A

Mu mewM 11

Nu newN v

l:i. Xi zee 'l'

Omicron ohm-e-cron0 <>

Pi pIerI n:

p Rho roep

Sigma sig-mahI. Cf

Tau tawT 1:

y b Upsilon oop-si-Ion

Phi fiec;b q,

Chi kieX X

Psi sigh't' 'l'

Omega o-may-gah0 m

A-1 Properties of areas.*

Circle

Hollow circle (tube)

I d D

Square

t x +- ---- x s t s/2 l

•symbols used are:

A= area I = moment of inertia S = section modulus

l

r = radius of gyration = Vi/,i. J = polar moment of inertia

Zp = polar section moduJus

-rrD2 A=--= "frR2

4 ,,,D•

I=-64

'ITD3 s-32

D R r----4 2 'ITD•

J=32 "fl'Dl z =--

p 16

Circumference = 1rD = 21rR

'1T(D2 - dl) A=----

4 1t(D4

- d 4)

64 1T(D4

- d4)

S- 32D

A= s2

s4 J = -

l 12 53

s --.. 6

· ..

r=----4

7r(D4 - d 4

)

J - 32

1r{D4 - d') z =----

p 16D

s r=-

z Vi2

wx x x

E entri all oaded olted oints