whats up, i know there are some engineering students and engineers on here and i need some help. these two problems have been driving me crazy and i am just flat out stuck.
first one:
the question is: two cyclindrical rods, one of steel and the other brass, are joined at C and restrained by rigid supports at A and E. For the loading shown and knowing the E-steel=200 GPa and E-brass= 105GPa, determine the reactions at A and E and the deflection of C.
the answers from the back of the book are:
Ra= 63.8kN left, Re=37.2kN left
C- 46.3μm right
second question:
the question is: a 4ft concrete post is reinforced by four steel bars, each 3/4 in in diameter. knowing E-steel=29x10^6psi, α-steel = 6.5x10^-6 / degree F and E-concrete= 3.6x10^6 psi, α-concrete= 5.5x10^-6/ degree F, determine the normal stresses induced in the steel and concrete by a termperature rise of 80 degrees F.
the concrete post is 8 x 8 inch and 4 ft tall. the steel bars are 3/4" in diameter and run the height of the post.
the answers from the back of the book are:
steel: -1.888x10^3 psi
concrete: 53.6 psi
thanks guys.
marc d
first one:
the question is: two cyclindrical rods, one of steel and the other brass, are joined at C and restrained by rigid supports at A and E. For the loading shown and knowing the E-steel=200 GPa and E-brass= 105GPa, determine the reactions at A and E and the deflection of C.
the answers from the back of the book are:
Ra= 63.8kN left, Re=37.2kN left
C- 46.3μm right
second question:
the question is: a 4ft concrete post is reinforced by four steel bars, each 3/4 in in diameter. knowing E-steel=29x10^6psi, α-steel = 6.5x10^-6 / degree F and E-concrete= 3.6x10^6 psi, α-concrete= 5.5x10^-6/ degree F, determine the normal stresses induced in the steel and concrete by a termperature rise of 80 degrees F.
the concrete post is 8 x 8 inch and 4 ft tall. the steel bars are 3/4" in diameter and run the height of the post.
the answers from the back of the book are:
steel: -1.888x10^3 psi
concrete: 53.6 psi
thanks guys.
marc d