WOLFRAM
|
DEMONSTRATIONS PROJECT
Planar Stress Rotation
σ
5
σ
-
2
r
o
t
a
t
e
0
.
5
0
π
T
h
i
s
D
e
m
o
n
s
t
r
a
t
i
o
n
s
h
o
w
s
h
o
w
r
o
t
a
t
i
o
n
a
f
f
e
c
t
s
n
o
r
m
a
l
a
n
d
s
h
e
a
r
s
t
r
e
s
s
e
s
,
b
o
t
h
f
o
r
a
g
r
a
p
h
i
c
a
l
l
y
r
e
p
r
e
s
e
n
t
e
d
p
l
a
n
a
r
s
t
r
e
s
s
c
a
s
e
a
n
d
a
M
o
h
r
'
s
c
i
r
c
l
e
;
σ
a
n
d
σ
a
r
e
t
h
e
p
r
i
n
c
i
p
a
l
s
t
r
e
s
s
v
a
l
u
e
s
.
