Very nice, loved your demonstrations. Many years ago I began my engineering studies with “Statics and Dynamics” using a self study programmed instruction booklet (no scientific calculators) slide rule days. I found Engineering studies too time consuming for a full time minimum wage worker and part time student. In the interest of time I changed my major from Engineering to Physics. No long labs with Physics I either got it or would get in later, maybe? (Long engineering laboratory classes made job scheduling difficulties limiting jobs I could work.) Years later having gotten a job in an industrial chemical laboratory and later in a research petroleum laboratory I often had problems where a little basic engineering knowledge was necessary when building test units and my old engineering books would see the light of day again. I never did pack away math, physics, and chemistry books as every assigned project involved a great deal of self study. I am enjoying your demonstrations and I marvel at how many resources students have in the “Information Age” just as I marveled once in my college days when a well heeled student showed me a “new device” the HP-35 calculator and my envy knew no limit.
Hi isnt Fwt = ((d/2)-tf)*w *Fy....... I dont understand where the 2 is coming from,,,,,, also are assuming in all symmetric cross section, the distance from the top or bottom to the plastic NA will always be d(entire height) divided by 2
Very nice, loved your demonstrations. Many years ago I began my engineering studies with “Statics and Dynamics” using a self study programmed instruction booklet (no scientific calculators) slide rule days. I found Engineering studies too time consuming for a full time minimum wage worker and part time student. In the interest of time I changed my major from Engineering to Physics. No long labs with Physics I either got it or would get in later, maybe? (Long engineering laboratory classes made job scheduling difficulties limiting jobs I could work.) Years later having gotten a job in an industrial chemical laboratory and later in a research petroleum laboratory I often had problems where a little basic engineering knowledge was necessary when building test units and my old engineering books would see the light of day again. I never did pack away math, physics, and chemistry books as every assigned project involved a great deal of self study. I am enjoying your demonstrations and I marvel at how many resources students have in the “Information Age” just as I marveled once in my college days when a well heeled student showed me a “new device” the HP-35 calculator and my envy knew no limit.
This has really explained very well what I never understood during my studies...thanks doc.
Thanks so much. This is what I needed to complete my Steels homework. You're a life saver.
At 23:24, Fw is not 1260 kN. You forgot to divide by two, so it's actually 630 kN. That of course affects calculated values for Mp and Z.
Oh, but I forgot to say thanks! This was very useful to refresh some concepts. This video is really appreciated.
hey men thanks for your help but i got some numbers are mistake the force on the web should be 630000 newton.
How to calculate elastic and plastic neutral axis If section is not symmetrical
what would be the section modulus of a square bar of 1x1 m2 cross sectional area and 25 m length?
our steel homework was about plastic and elastic section moduls thank you so much for this video ..........
what if the I section have to webs? for plastic modulus, for the web of the Mp formula, should I just multiply it by 2?
Great video. Extraordinary explanation
Sir,can you share video on shear modulus on beams and coefficient of thermal expansion.
Thank you for this video. very useful. explained well and efficiently
@srum31 what if we have sapcing between the "w"
Ix=1/12 *[(bd^3)- (b-w) i mnea this w]
imagine linked two I beams .
puts my teacher to shame. thank you
Now I use it to calculate the bending capacity of build up steel beam. Thank you very much.
Thanks. It seems your Fw @plastic modulus, you forget to divide by 2..
there is no need to multiply Fy and then divide it in the end, just multiply the area and y for each part x2.
Thank you, sir. That is perfect
Hi isnt Fwt = ((d/2)-tf)*w *Fy....... I dont understand where the 2 is coming from,,,,,, also are assuming in all symmetric cross section, the distance from the top or bottom to the plastic NA will always be d(entire height) divided by 2
It useful video for calculating Plastic section modulus and elastic section modulus
Yw should be 120mm instead of 90 because it is 2/3 x 180 =120 mm
thank u sir for helping us very helpful lec......
Thanks an infinity.
thank you Alan ...
thank you!
thank you !!!
thank you :D
31k+ Views and no1 says thank you(thumpbed up i meant) except 126.