Przekształcenie masz podane. sqrt({frac{32Mgmax}{pi d^3})^2+3({frac{16MDelta max}{pi d^3})^2}} leq kr /^2 ({frac{32Mgmax}{pi d^3})^2 } + 3({frac{16MDelta max}{pi d^3})^2} leq kr^2 {frac{(32Mgmax)^2}{(pi d^3)^2}} + 3{frac{(16MDelta max)^2}{(pi d^3)^2}} leq kr^2 {frac{(32Mgmax)^2}{pi^2 d^6}} + 3{frac{(16MDelta max)^2}{pi^2 d^6}} leq kr^2 /.d^6 {frac{(32Mgmax)^2}{pi^2}} + 3{frac{(16MDelta max)^2}{pi^2}} leq kr^2.d^6 /kr^2 {frac{(32Mgmax)^2}{pi^2kr^2}} + 3{frac{(16MDelta max)^2}{pi^2kr^2}} leq .d^6 dgeq sqrt[6]{frac{(32Mgmax)^2}{pi^2kr^2} + 3{frac{(16MDelta max)^2}{pi^2kr^2}}}
32Mg=A; 16Ms=B√((A/πd^3)^2+3(B/πd^3)^2)≤kr(A/πd^3)^2+3(B/πd^3)^2≤kr^2A^2/π^2d^6+3B^2/π^2d^6≤kr^2 |*π^2d^6A^2+3B^2≤kr^2*π^2d^6d≥((A^2+3B^2)/(πkr)^2)^(1/6)jednostkiN^2m^2/Pa^2=N^2m^2/(N^2/m^4)=m^6d=(m^6)^(1/6)=m-----------------------------kr=048 Re= 0,48*210*10^6=100,8*10^6 =10^8 PaMg=2000 Nm; Ms=1000 NmA^2= (32*2000)^2=4,096*10^9 B^2= (16*1000)^2=0,256*10^9A^2+3B^2= 4,096+3*0,256=4,864*10^9(πkr)^2= π^2*(10^8)^2=9,87*10^16 ((A^2+3B^2)/(πkr)^2= (4,864/9,87)*10^(9-16)= 4,864/9,87=0,4928*10^-7=0,04928*10^-6d≥ (0,04928*10^-6)^(1/6)0,04928^(1/6)=0,6055 (10^-6)^(1/6)=0,1 d≥ 0,6055*0,1=0,06055 md≥60,55 mm d=61 mm