flexion pura e inelastica
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Reporte de evidencias
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UNIVERSIDAD AUTONOMA DE CHIAPAS
FACULTAD DE INGENIERIA
CATEDRATICO
DR. ALEJANDRO RUIZ SIBAJA
MATERIA
MECANICA DE MATERIALES
TRABAJO
REPORTE DE EVIDENCIAS
INTEGRANTES
GARCIA SANCHEZ RICARDO FIDEL
MORENO DE LA ROSA WILBER
SEMESTRE Y GRUPO
“5-B”
FECHA
MARTES 24 DE NOBIEMBRE DEL 2015
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FLEXION PURA Y FLEXION INELASTICA
BEER AND JOHNSTON
Elemento simétrico sometido a flexión pura
Deformación en un elemento simétrico sometido a flexión pura
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4.1 .- Considerando que el par mostrado en la figura actua en un plano vertical, halle
los esfuerzos en a) el punto A, b) en el punto B.
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4.2 .- Considerando que el par mostrado en la figura actua en un plano vertical, halle
los esfuerzos en a) el punto A, b) en el punto B.
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4.3.- La viga de patin ancho que se muestra en la figura está hecha de un acero de
alta resistencia y baja aleación para el que ᵟy= 345 MPa y ᵟu= 450 MPa. Utilizando
un factor de seguridad de 3.0 determine el par máximo que puede aplicarse en la viga
cuando se flexiona alrededor del eje z. Desprecie el efecto de los filetes.
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4.4.- Resuelva el problema 4.3 suponiendo que la viga se flexiona alrededor del eje y.
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4.22.- La viga mostrada en la figura es hecha de un nylon para que el esfuerzo
permisible es de 24 MPa en tensión y 30 MPa en comprensión. Determine el máximo
par M que puede aplicarse a la viga.
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4.27.- Se observa que una tira delgada de acero con 0.06 in de ancho puede doblarse en un
círculo de ¾” de diámetro sin que se produzca ninguna deformación permanente. Sabiendo
que E= 29 x 106 psi, determine a) el esfuerzo máximo sobre la tira flexionada, b) la magnitud
de los pares requeridos para doblar la tira.
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4.28.- Un par de 3 Kip-in se aplica a la barra de acero que se muestra en la figura. a)
Considerando que el par se aplica alrededor del eje z, halle el esfuerzo máximo y el radio de
curvatura de la barra. B) Resuelva la parte a suponiendo que el par se aplica en el eje y.
Considere E= 29 x 106 psi.
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4.30.- Un par de 24 kN-m se aplica a la viga de acero laminado W200x46.1 que se presenta en
la figura. A) suponiendo que le par se aplica alrededor del eje z determine el esfuerzo máximo
y el radio de curvatura de la viga. B) Resuelva la parte a suponiendo que el par se aplica
alrededor de y. Utilice E= 200 GPa.
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FLEXION PURA Y FLEXION INELASTICA
JAMES GERE (5° EDICION)
Esfuerzos normales en vigas (materiales linealmente elásticos)
Diseño de vigas para esfuerzos de flexión
Esfuerzos por flexión y cortantes en vigas con sección transversal rectangular
Esfuerzos por flexión cortantes en las almas de vigas con patines
Flexión elastoplástica
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