Resistência dos materiais

...

[pic 162] [pic 163][pic 164][pic 165]

[pic 166]

RA + RB = 120KN

[pic 167][pic 168][pic 169][pic 170]

RB = 60KN

[pic 171]

RA = 60KN

[pic 172]

M = -36KN.m

[pic 173]

M = -36KN.m

[pic 174]

M = 0

4)

[pic 175]

[pic 176][pic 177][pic 178][pic 179][pic 180]

[pic 181]

[pic 182][pic 183]

[pic 184]

[pic 185][pic 186][pic 187]

[pic 188][pic 189]

[pic 190][pic 191][pic 192][pic 193]

[pic 194]

[pic 195][pic 196][pic 197][pic 198]

[pic 199][pic 200][pic 201][pic 202]

[pic 203]

[pic 204] [pic 205][pic 206][pic 207]

[pic 208]

RA + RB = 2000N

[pic 209][pic 210][pic 211][pic 212]

RB = 1600N

[pic 213]

RA = 400N

[pic 214]

M = 240N.m

[pic 215]

M = 240N.m

[pic 216]

M = -240N.m

[pic 217]

M = 0

Dimensionamento do Eixo

[pic 218]

[pic 219]= 200Mpa

[pic 220]

[pic 221]

Wx = [pic 222]

d = 0,0145m ou 15mm[pic 223]

[pic 224]

D = 25mm

5)

[pic 225]

[pic 226][pic 227][pic 228][pic 229][pic 230][pic 231]

(x – 1m)[pic 232]

[pic 233]

[pic 234][pic 235][pic 236][pic 237][pic 238][pic 239][pic 240][pic 241]

[pic 242]

Q [KN] [pic 243][pic 244][pic 245][pic 246][pic 247][pic 248][pic 249][pic 250][pic 251][pic 252][pic 253][pic 254][pic 255][pic 256][pic 257][pic 258][pic 259]

-

[pic 260][pic 261]

[pic 262][pic 263][pic 264]

[pic 265][pic 266][pic 267][pic 268][pic 269][pic 270]

[pic 271][pic 272][pic 273]

[pic 274]

[pic 275][pic 276][pic 277]

[pic 278]

[pic 279] [pic 280][pic 281][pic 282]

[pic 283]

RA+RB = 40KN

[pic 284][pic 285][pic 286][pic 287]

RB = 22KN

[pic 288]

RA = 18KN

[pic 289]

M = 18KN.m

[pic 290]

M = 18KN.m

[pic 291]

M = 22KN.m

[pic 292]

M = 0

6)

[pic 293]

[pic 294][pic 295][pic 296][pic 297][pic 298][pic 299]

[pic 300][pic 301]

[pic 302][pic 303][pic 304]

[pic 305][pic 306][pic 307][pic 308]

[pic 309]

[pic 310][pic 311]

[pic 312][pic 313]

[pic 314][pic 315][pic 316]

[pic 317][pic 318]

[pic 319][pic 320][pic 321]

[pic 322]

[pic 323] [pic 324][pic 325][pic 326]

[pic 327]

RA+RB = 3500N

[pic 328][pic 329][pic 330][pic 331]

RB = 1750N

[pic 332]

RA = 1750N

[pic 333]

M = -1000N.m

[pic 334]

Q = 750N

[pic 335]

M = -250N.m

OBS:

Como o carregamento é simétrico as cargas são iguais.

7)

[pic 336]

[pic