Strength of Materials | 2 Prob set on Mechanic of Deformable Bodies

4回閲覧 • 31問 • 1年前

問題一覧

What is the type of beam wherein no rotation or vertical movement can occur at either ends?

Restrained beam

The property of materials that enable it to absorb energy before rupturing, represented by the area under stress strain curve derived from a tensile test of the material.

Toughness

The property of a material to resist a change in its physical shape.

Rigidity

The property of a material to undergo plastic deformation after being stressed beyond the elastic limit before rupturing.

Ductility

The property of a material to fracture at low stress without appreciable deformation.

Brittleness

A force that acts perpendicular to the cross section of a structural member and at its centroid.

Axial Load

The twisting of a structural member about its longitudinal axis by two equal and opposite torques.

Torsion

A type of beam with fixed support and a roller support at the other end.

Propped beam

The stress beyond which the ratio of stress and strain for a material no longer remains constant.

Proportional Limit

The change in length caused usually by a force applied to a piece, the change being expressed as a ratio, the increase or decreased divided by the original length

Strain

A spherical pressure vessel with an internal diameter of 540 mm is to be generated using a 3mm thick steel. The yield stress of the material is 450 Mpa and the maximum allowable shear stress is 240 Mpa. Determine the maximum allowable internal pressure in Mpa.

10 Mpa

The Ratio of the transverse strain to longitudinal strain.

Poisson’s Ratio

The modulus of elasticity of steel is

200 Gpa

This represents the ability of the material to absorb energy without any permanent damage to the material.

Modulus of Toughness

What class of black or dark colored cementitious substances is composed principally of high molecular weight hydrocarbons?

Bitumen

Give the flexibility of a truss member with length L, cross sectional area A, modulus of elasticity E and moment of inertia I.

L/AE

What terms refer to roof beams spanning between trusses?

Purlin

What do you call the horizontal wall beams serving principally to resist bending due to wind on the side of an industrial building.

Girt

A metal specimen with 36mm diameter and has a length L=360 mm and a force of 300 Kn, elongates the length by 1.2mm. What is the elastic of modulus?

88419 Mpa

This element is added to the steel to make the steel corrosion resistant, when this element is more than 16%, the material is called stainless steel.

Chromium

A heat treatment of steel which is done through shock cooling by immersing it to liquid or molten material into a cooling medium.

Quenching

It is the largest stress based on the original cross-sectional area which a material can stand. Thus, it is the maximum ordinate of the stress-strain curve.

Ultimate Strength

What is the stress developed in a bar 1m Length with rectangular cross section 50mm x 50mm subjected to an axial tensile force of 100 N.

0.04 Mpa

When a beam is loaded the new position of its longitudinal centroid axis is called.

Elastic Curve

(25- 26. A 2m solid shaft having a radius of 35mm in subjected to a torque of 950N-m. Using G=80000 Mpa,) 25. Calculate the maximum torsional shearing stress developed.

14.11 Mpa

(25- 26. A 2m solid shaft having a radius of 35mm in subjected to a torque of 950N-m. Using G=80000 Mpa,) 26. Calculate the maximum angle of twist

0.01 radians

A cantilever beam 6m long carries a uniform load of 400kn/m throughout the span I=1.7 x 10^9 mm and e=200000mpa. What is the deflection at the free end?

190.59 mm

From the given shear diagram shown. Determine the maximum moment in the beam.

30 KN-m

28-29. From the simply supported beam showm 28. Calculate the reaction at A? [object Object]

817.27 kN

28-29. From the simply supported beam showm 29.Calculate the reaction at B? [object Object]

502.73 kN

The point in the moment diagram at which the curvature reverses as it changes from concave to convex is called :

Point of Inflection

BU2 Quiz 100

Mat · 30問 · 1年前

BU2 Quiz 100