532 



STRUCTURAL MECHANICS. 



CHAP. XVI. 



r 



i 



JL 

 P 



T 



Modulus of Elasticity, 



PI 

 - 



(3) 



(c) 



where A =ared sect/on m-m 



\ Tbta/ deformation , 



rrj \ ^E 2 *AE 



(/nit deformat/b/j, 



P 



>m 



'/77 



Modulus of Elasticity, 

 ,t Q.-f-f/A.n. 



A ~S ~d/l A A 



"% Total deformation, 



A= G l= AO 

 (JmtdeFormatiop, 



(b) 



(c) 



where A=areasectionm-m. 



Percent e/ongahbr>, 



^Y'/OO (a) 



Percent reduction of are a, 

 /OO (b) 



m_ 



r^A? 



A' 

 A 



/= Original length. 

 2'= length at failure. 

 A= Original section area. 

 A '=Area ruptured sect/on. 



12. THinPjpesAfiD CYu/iDER5://imN/v. PRESSURE. 



Longitudinal rupture, sec.m-fn, 



p s vsi.f,*0 (3) 



Transverse rupture, sec. n-n. 



w= unit internal pressure. 

 8oth iongitudinaland trans- 

 verse s tresses are independ 

 ant of the form oF the ends. 



D- 



13. $r/?E55C5iH dfiGLE RIVETED UP JOINTS. 



Unit tension onp/ate, 

 f t =P+(p-dH (a) 



Unit compressionon rivet, 

 f c =P+td (b) 



Unit shear on rivet, 



(C) 



14. STRESSES in DOUBLE R/veTFoLApJoms. 



p-\ ---- \\zr 



for longitudinal Joints in 

 pipes or cylinders P=: 

 D=diam.pipe or cylinder. 





Unit tension on plate, 



--p Unit compression on rivet, 

 f c =P+^td (b) 



unit shear on r/Vet, 



For lonqil'i/d/nal/oinbin pipe 

 or cylinder s P^jwfip, (d) 

 J)-c/jdm. ofp/pe or cylinder. 



15. DESIGN or SJMGLE RIVETED LAP JO/NTS. 



5ee figure above. For Butt Joints see ChaptXYII 

 Most efficient joint for cy finders andpipe, 

 j 4/. /i.fcl 



; Cl -- ftf/y/'ry/ff 



16. DESIGH OF DOUBLE RIVETED LAP JO/NTS. 



See Figure above. 



tfoste FFic tent joint For cylinders and pipe, 



(3) 0J (C) (d) 



Most eFficient joint For given thickness p/ate; 



(e) (fj (g) 



For/ointsw'tti more than two rows of meb see Cndpt.XYII. 



(a) (bj (c) (d) 



MosteFFicientjoint forgiven th/cknessplate , 



(e) (F) (q) 



Forjoints with more thsntwo rows of riwts See ChaptXY// 



