a. σ, δ akibat berat sendiri

I = 1

12 b.h3 =

112

0,1.0,13 = 8,33 .10-6 m4

W = ρ.V.g = 7800 x 2x 0,1 x0,1 x 9,81 = 1530,36 N

w = W/L = 765,18 N/m

M = W.L / 2 = 1530,36x 2/ 2 = 1530,36 Nm.

σ max= M .cI

= 1530,36 .0,05

8,33.106 = 9,18 Mpa.

δmax = - w . L4

8.E . I =

765,18 .24

8 x200.10¿ = - 0,918 mm

b. σ, δ akibat Wb saja

I = 1

12 b.h3 =

112

0,1.0,13 = 8,33 .10-6 m4

w = Wb/L = 5000. 9,81 / 2 = 24525 N/m.

M = (w.L2) / 2 = (24525. 22) / 2 = 49050 Nm.

σ max = M .cI

= 49050 .0,05

8,33.106 = 294,3 Mpa.

δ max = - w . L4

8.E . I =

24525 .24

8 x200.10¿ = - 29,43 mm

2D

Quad4

Tri

Quad4

Tri3

Tet10