14 



Wilson, Failure of cirtain Cast Steel Dies. 



The following example has been worked out completely 

 /'„ = 675" /'i = i3-5" e=i-5"= e'a = -344" 



2 



7^= 605 tons h = 2 /= /= '3 

 then at r^r^ 



/ = -o68s.v^--094.v, 

 at r = r, 



p = •274.v'^ - S'o.r + 1 1 -073, 

 at r= r„ 



t= -•2 74.v^-52-33A- 18-455. 

 r = r^ 



t= - •069.V'- 2 2'29.r- 7 '382, 

 Figs.\\.?iX\A III. shew these stress curv'es, drawn to scale. 



orar x,nnjc-i' and, ouZe./ feuuis lb sa-me ScaZe.. 

 Sactwri o-f op.post2z. half of cUe- omcti&Z 



F/C /// 



IDt,a.ifra.m sTvervcn^ 

 X3.1 t^Tuier a-nd. ervi&r- ■/'a.ce.s 



^/9 



