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Marius Brebenel

Dec 2004
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  • Responses: 140


  • MSc, Polytechnical University of Bucharest, Romania, 1979
  • PhD, Polytechnical University of Bucharest, Romania, 1996


  • Engineering
  • Mathematics
  • Physics

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Calculating the Second Moment of Area

It is necessary to design a square-section composite bar that will withstand an applied load without deflecting more than a specified amount.The design specification for the bar, including its dimensions and loading criteria, is given below.

Using the formula below, calculate the second moment of READ MORE »

Engineering / Mechanical Engineering » 36561

static engineering systems for stress and bending moments

As per attachement.
includes; maximum bending moment
maximum stress in a beam
graph sketches for tensil and compressive stresses
dimensions for cross section that minimise stress with given values
percentage reduction of the maximum stresswith new calculated cross section

Engineering / Mechanical Engineering » 487712

Applied Mechanics

A solid shaft 125mm did transmits 600kW at 300 revolutions/minute. It is also subjected to a bending moment of 9kN-m and to an end thrust. If the maximum principal stress is limited to 80MPa, determine the permissible end thrust.

Also, determine the position in which the principal stress acts, an READ MORE »

Physics / Classical Mechanics / Circular Motion / Torques » 31551

Viscous Fluid Flow : Viscous Drag on the Walls of a Pipe

For laminar flow in the entrance of to a pipe, as shown in figure, the entrance is uniform u=U0, and the flow downstream is parabolic in profileu(r)=C(r0^2-r^2). Using integrla relations, show that the viscous drag exerted on the pipe walls between 0 and x is...

Prescribed text book: White, FM, , READ MORE »

Mathematics / Calculus and Analysis / Real Analysis / Integrals » 68256

Mixture of Perfect Gases

A mixture of perfect gases consist of 3kg of carbon monoxide and 1.5kg of nitrogen at a pressure of 0.1 MPa and a temperature of 298.15 K. Using table 5-1, find:
a) the effective molecular mass of the mixture
b) its gas constant
c) specific heat ratio
d) partial pressures
e) density

Please s READ MORE »

Engineering / Chemical Engineering / Molecular Engineering » 452997
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