SIMPLE AND COMBINED STRESSES. 



r,3i 



Tension. 



p 



m 



JL..JSL 



P 



Unit tension on m-m, 

 Total tension on m-m, 



Area For q/'yen stress, 



p 



A = -f- j (c) 



4 



where A : area section m-m 



(b) 



2. AXIAL COMPRESSION. 



I p Unit compression onm-m, 



M 



HL. 



m Total compression on m-m, 

 P--f c A (b) 



Ared for given stress, 



A=f 



fc 



(0 



where A -area of section m-m. 



3. SIMPLE SHEAR. 



Unit shear on m-m, 



(*) 



P ^ 



m 



Tola f shear onm-m, 

 m__ P=f y A, (b) 



' P Area for given stress, 

 p 



fy 



where A=area section m-m 



4. DIAGONAL frXBXX'faWUMKr. 



Unit shear on n-n, 

 f=sin?6^f t 

 Unit tensionon n-n. 



i--. 



I 



.M~. . JD Max. unit shear on n-n, 



(a) 

 (t>) 

 (c) 



*fa; 0=45; 

 flax, unit tension on n-n, 



where %=, A* area ofsectionm-m. 



5.D/A60NAL 

 P 



V 



\ 



m 



4 



Unit she dr on n-n, 



f : 2j5ir??d-f5in?0; (a) 

 Unit compression on n-n, 



f^sin'0=sin*0 (b) 

 7? /lax. unit shear on n-n, 



Max. unitcompressiononnn. 

 S /7 f*; 0=90; (dj 



wfieref c -- t A = area section m-m . 



flax, unit shear on n-n; 



4L 

 "777' 



rlax.unft tensionon n-n, 



m 



Tr * ' 



S k 



y5 ' Jldx.unit compression on o-O; 

 n f'/(#f7f**^*) 



L I t J Lly 



where F t *j,fr=jj ,A*arc3sec.m-m 



!DlA60t1AL5TR[5$tt: 



rlax.unit shear on n-n; 



X 



* ^ tlax.unit compression on n-n, 

 P***i 



_ 



flax unit tension on n-n, 



^(fifl*"**H& 



CL 4J ft 



where fc=j;f y -j;A-3re3sec.m-m. 



^ fa qu/red Unit stress on CE. 

 f\ lay off AO and SO- unit 

 stresses on (D ID f. fa* 



a>F*nd n'f parallel to M 

 anJM Thenrtwnitetr- 



/ w/t 'shear. E///psc/$ 

 /ocvs off for at/wi- 

 ve s of0. 



