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equations: Fix Elastic Buckling

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The constant in two of the equation is π², not just π.

Fixes: #1073

Signed-off-by: Christophe de Dinechin <christophe@dinechin.org>
This commit is contained in:
Christophe de Dinechin 2024-07-29 20:01:08 +02:00
parent acc1cf4f41
commit f87663360b
1 changed files with 2 additions and 2 deletions
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4
src/equations.cc
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@ -58,8 +58,8 @@ static const cstring basic_equations[] =
"Columns and Beams", nullptr,
"Elastic Buckling", "{ "
"'(Pcr_kN)=(Ⓒπ*(E_kPa)*(A_cm^2))/sq((K*(L_m))/(r_cm))' "
"'(Pcr_kN)=(Ⓒπ*(E_kPa)*(I_mm^4))/sq(K*(L_m))' "
"'(Pcr_kN)=(sq(Ⓒπ)*(E_kPa)*(A_cm^2))/sq((K*(L_m))/(r_cm))' "
"'(Pcr_kN)=(sq(Ⓒπ)*(E_kPa)*(I_mm^4))/sq(K*(L_m))' "
"'(σcr_kPa)=(Pcr_kN)/(A_cm^2)' "
"'r = sqrt((I_mm^4)/(A_cm^2))' "
"}",