Please use my data, and show clear working, thanks TWO$-$POINT BEAM BENDING TEST

An LVL beam will be tested in order to assess the validity of several key assumptions we use in

the analysis of beams. The purpose of this part of the lab activity is to provide some additional

context that may help gain a better understanding of beam bending and the key beam assump$-$

tions we rely on in our analysis of beams and bending.

Test Setup

A simply$-$supported beam will be tested under two$-$point loading as shown in Fig. $2.$ This type

of loading allows for us to examine the beam response to pure bending and to pure shear. The

grain of the LVL beam is aligned with the long axis of the beam $($what we typically call the

$x-$axis$),$ and the beam cross$-$section has the orientation and approximate dimensions shown.

Figure $2$: Layout and dimensions of two$-$point beam bending test.:$)$Test Setup

A simply$-$supported beam will be tested under two$-$point loading as shown in Fig. $2.$ This type

of loading allows for us to examine the beam response to pure bending and to pure shear. The

grain of the LVL beam is aligned with the long axis of the beam $($what we typically call the

$x-$axis$),$ and the beam cross$-$section has the orientation and approximate dimensions shown.

Figure $2$: Layout and dimensions of two$-$point beam bending test.

Experimental Procedure

In the two$-$point test, the total load applied to the beam is increased incrementally with half of

the load applied at the points shown in Fig. $2$ until a specified maximum load is reached. The

deformation of the beam is measured in three different ways during this test as detailed in the

following steps:

Record the total load $P$ applied to the beam in each load increment.

Measure the deflection $v$ of the beam at mid$-$span in each load increment using the deflec$-$

tion gauge. Deflection is the distance that the beam moves downwards when bending.

At mid$-$span, an array of eight demec gauges is distributed over the height of the beam in

order to measure average normal strains in the direction of the long axis of the beam at

different points along the height of the cross$-$section. Obtain readings from this mid$-$span

array under zero load and for each load increment and record the positions of these gauges

relative to the top or bottom of the beam cross$-$section.

At approximately $425mm$ to the left of the right support, three demec gauges are applied

in a $45$ rosette located and aligned relative to the centerline axis of the beam as shown

in Fig. $3.$ Obtain readings from this rosette under zero load and for each load increment.

Ensure that the appropriate calibration factors are recorded for all demec gauges.