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= P =
V
2
P =
2
→
121 · P · L³
1920 · E · I
1920 · E · I · ΔMAX
121 · L 3
=
=
48 · E · I · ΔMAX
L 3
=
→ =
648 · E · I · ΔMAX
V
P =
23 · L 3
P
405 · P · L³
8192 · E · I
8192 · E · I · ΔMAX
405 · L 3
=
23 · P · L³
648 · E · I
=
P · L 3
48 · E · I
5 · L 4
q
q
=
−
−
=
384 · E · I · ΔMAX
4
−
g · L
2 · P +
g · L
→
→
q
5 · q · L 4
384 · E · I
−
g · L
=
3 · P
+
g · L
→
→ P =
=
2 · V
−
2 2 3 3
P
=
2 · g · L
2 2
QPL − Quarter Point Load
=
P · L
+
g · L²
= −
P
2 8 L 8
→ =
2 · M
−
P
P
P
3 8
g · L
P= +
g · L
→
TPL − Third Point Load
=
P · L
+
g · L²
→
= 2 · V
L 8
=
3 · M
−
3 · g · L
→
g · LP=
P
+
g · L
→2 2
CPL − Center Point Load
P
4 8 L 2
=
4 · M
−
g · L
FORMULAS - SIMPLY SUPPORTED BEAM
UDL − Uniformly Distributed Load
=
q · L²
+
g · L²
→
=
2 · V
8 8 L²
=
q · L
+
g · L
→ g
2 2 L
M MAX
V MAX
ΔMAX
M MAX
V MAX
ΔMAX
M MAX
V MAX
=
8 · M
g
=
P · L
+
g · L²
→
ΔMAX
ΔMAX
M MAX
V MAX
ΔMAX
M MAX
V MAX
FPL − Fifth Point Load
P · L
+
g · L² 1,66· M
−
1,66 · g· L
1,66 8 L 8
→
q · L C + g · L C
=
· L C · (2 · L S + L C )
2 · L S
ΔMAX, LS =
− q· L C ²· L S ²
18 · (√3) · E · I
g · L C²
L² L² 2 · L²
F 3 =
R A =
=R B
P · L C
L S
Force needed to retain stability
9 · (√3) · E · I
3 · E · I · Δ MAX, Lc
L C ² · (L S + L C )
P =
− 9 · (√3) · E · I · Δ MAX, LS
L C · L S ²
P · (L S + L C )
L S
2 · 1,5 · M C
→ F 3 =
3 · P
+
M MAX
V MAX
3 · P
+
V
P
P
F 2 =
2 · 1,5 · M C
→ F 2 =
g · L C²
L L 2 · L
2 · 1,5 · M C
→ F 3 =
3 · (q + g) · L C
L² 2 · L S ²
F 1 =
1,5 · M C
→ F 1 =
=
3 · P · L C + g · L C²
L 2 · L
g · L C−
2
→
2 · L S
ΔMAX, Lc
=
M
−
g · L C
→ P =
= P + g · L C →
P · L C ² · (L S + L C )
3 · E · I
Force needed to retain stability
F 1 =
1,5 · M C
→ F 1
− q · L C · L S ²
→
= P · L C +
g · L C ²
=
2 L C
R A =
q · L C ²
R B
L C
EPL - Cantilever End Point Load
= → q =
=
3 · (q + g) · L C
L S 4 · L S
F 2 =
2 · 1,5 · M C
→ F 2 =
3 · (q + g) · L C
L S 2 · L S
F 3
→
ΔMAX, Lc
→
2 2 L C ²
L C ²· L S ²
→ =
2 · M C
=
V
−
q =
− 18 · (√3) · E · I · Δ MAX, LS
g
g
24 · E · I
24 · E · I · Δ MAX, Lc
L C ³ · (4 · L S + 3 · L C )
q · L C ³ · (4 · L S + 3 · L C )
q
q
−
FORMULAS - CANTILEVER BEAM
UDL − Cantilever Uniformly Distributed Load
q · L C ²
+
g · L C ²
M MAX =
ΔMAX, LS =
=
V MAX =
F1
q
qF3
F3
P
F2
P½ LS
LS LC
F1 P
F2
q
½ LS
LS LC
LS LC
LS LC
LS LC

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Truss Formulas

  • 1. = P = V 2 P = 2 → 121 · P · L³ 1920 · E · I 1920 · E · I · ΔMAX 121 · L 3 = = 48 · E · I · ΔMAX L 3 = → = 648 · E · I · ΔMAX V P = 23 · L 3 P 405 · P · L³ 8192 · E · I 8192 · E · I · ΔMAX 405 · L 3 = 23 · P · L³ 648 · E · I = P · L 3 48 · E · I 5 · L 4 q q = − − = 384 · E · I · ΔMAX 4 − g · L 2 · P + g · L → → q 5 · q · L 4 384 · E · I − g · L = 3 · P + g · L → → P = = 2 · V − 2 2 3 3 P = 2 · g · L 2 2 QPL − Quarter Point Load = P · L + g · L² = − P 2 8 L 8 → = 2 · M − P P P 3 8 g · L P= + g · L → TPL − Third Point Load = P · L + g · L² → = 2 · V L 8 = 3 · M − 3 · g · L → g · LP= P + g · L →2 2 CPL − Center Point Load P 4 8 L 2 = 4 · M − g · L FORMULAS - SIMPLY SUPPORTED BEAM UDL − Uniformly Distributed Load = q · L² + g · L² → = 2 · V 8 8 L² = q · L + g · L → g 2 2 L M MAX V MAX ΔMAX M MAX V MAX ΔMAX M MAX V MAX = 8 · M g = P · L + g · L² → ΔMAX ΔMAX M MAX V MAX ΔMAX M MAX V MAX FPL − Fifth Point Load P · L + g · L² 1,66· M − 1,66 · g· L 1,66 8 L 8 →
  • 2. q · L C + g · L C = · L C · (2 · L S + L C ) 2 · L S ΔMAX, LS = − q· L C ²· L S ² 18 · (√3) · E · I g · L C² L² L² 2 · L² F 3 = R A = =R B P · L C L S Force needed to retain stability 9 · (√3) · E · I 3 · E · I · Δ MAX, Lc L C ² · (L S + L C ) P = − 9 · (√3) · E · I · Δ MAX, LS L C · L S ² P · (L S + L C ) L S 2 · 1,5 · M C → F 3 = 3 · P + M MAX V MAX 3 · P + V P P F 2 = 2 · 1,5 · M C → F 2 = g · L C² L L 2 · L 2 · 1,5 · M C → F 3 = 3 · (q + g) · L C L² 2 · L S ² F 1 = 1,5 · M C → F 1 = = 3 · P · L C + g · L C² L 2 · L g · L C− 2 → 2 · L S ΔMAX, Lc = M − g · L C → P = = P + g · L C → P · L C ² · (L S + L C ) 3 · E · I Force needed to retain stability F 1 = 1,5 · M C → F 1 − q · L C · L S ² → = P · L C + g · L C ² = 2 L C R A = q · L C ² R B L C EPL - Cantilever End Point Load = → q = = 3 · (q + g) · L C L S 4 · L S F 2 = 2 · 1,5 · M C → F 2 = 3 · (q + g) · L C L S 2 · L S F 3 → ΔMAX, Lc → 2 2 L C ² L C ²· L S ² → = 2 · M C = V − q = − 18 · (√3) · E · I · Δ MAX, LS g g 24 · E · I 24 · E · I · Δ MAX, Lc L C ³ · (4 · L S + 3 · L C ) q · L C ³ · (4 · L S + 3 · L C ) q q − FORMULAS - CANTILEVER BEAM UDL − Cantilever Uniformly Distributed Load q · L C ² + g · L C ² M MAX = ΔMAX, LS = = V MAX = F1 q qF3 F3 P F2 P½ LS LS LC F1 P F2 q ½ LS LS LC LS LC LS LC LS LC