.
tanpa peninjauan pengaruh kontak
(lendutan -Z)
.
(tegangan lentur S11)
.
tinjauan gap sebesar 0.0 cm
(lendutan -Z)
(tegangan lentur S11)
.
tinjauan gap sebesar 1.0 cm
(lendutan -Z)
(tegangan lentur S11)
.
tinjauan gap sebesar 2.0 cm
(lendutan -Z)
(tegangan lentur S11)
.
Diatas terlihat hasil sesuai dgn yg diprediksikan berdasarkan pendekatan perhitungan dibawah mungkin ini karena bidang kontak yg rata, agak berbeda saat meninjau kontak pane stress model lug/pin bidang kontak lengkung . Terlihat kontur yg tidak menerus pada lingkaran dalam (pin) dgn bidang kontak, perlu peninjaun ulang ini.
.
' Calculation pads
' -------------------
'
' Material props. (kgf,cm)
Es = 2000000
nu = 0.30
G = Es/(2*(1+nu)) = 769230.77
' Section props. (cm)
bs = 5
hs = 10
Is = 1/12*bs*hs^3 = 416.67
Ss = 1/6*bs*hs^2 = 83.33
'
' Cantilever beams (1)
'
' concentrate loads (kgf)
P = 1000
' beam length (cm)
l = 3*100
a = 1.5*100
b = a = 150.00
' Bending moment (kgf.cm)
M = P*b = 150000.00
' Shear force (kgf)
R = P = 1000.00
V = R = 1000.00
' flexural tress (kgf/cm^2)
Sigma = M/Ss = 1800.00
' deflection @ free end (cm)
Delta = ((P*b^2)/(6*Es*Is))*(3*l-b) = 3.37
'
'
' Cantilever beams (2)
'
' concentrate loads (kgf)
P = 1000
' beam length (cm)
l = 3*100
a = 1.5*100
b = a = 150.00
' Bending moment (kgf.cm)
M = 3/16*P*l = 56250.00
' Shear force (kgf)
R1 = 5/16*P = 312.50
R2 = 11/16*P = 687.50
V1 = R1 = 312.50
V2 = R2 = 687.50
' flexural tress (kgf/cm^2)
Sigma = M/Ss = 675.00
' deflection @ point load (cm)
Delta = (7*P*l^3)/(768*Es*Is) = 0.30
'
' overhang beams
'
' concentrate loads (kgf)
P = R1 = 312.50
' beam length (cm)
l = 3*100 = 300.00
a = 1.5*100 = 150.00
x1 = a = 150.00
x = l/2 = 150.00
' Bending moment (kgf.cm)
M1 = P*a = 46875.00
M2 = P*a*x/l = 23437.50
' Shear force (kgf)
R1 = P*a/l = 156.25
R2 = P/l*(l+a) = 468.75
' flexural tress (kgf/cm^2)
Sigma = M1/Ss = 562.50
' deflection @ free end (cm)
Delta = ((P*a^2)/(3*Es*Is))*(l+a) = 1.27
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