I am 100% with your reflective comment that the "overly math intensive stuff" was where feeling lost, once in real engineering terms it makes the most sense. Very relatable. Thank you for all the lectures!
Hi, professor. I am taking the equivalent course at University now I may say that I found this video really useful. I have a background as an architect and now I am in a master in engineering. The way you teach is so helpful to truly understand and visualize what is being analysed. We also have participation factors tho!
You really hit the nail on the head with this one ... Dynamics can be intimidating and sometimes seems almost impossible to understand. I heard they're now putting modal analysis on the afternoon portion of the lateral SE. Two stories and two lumped masses basically as simple as it gets still turns into a huge math problem.
Great explanation of Response Spectrum Analysis. Actually best I've ever found on UA-cam. Thank you sir! Besides, I do agree with you that too much and too detailed advanced mathematics in engineering teaching can hamper the formation of engineering intuition and appreciation ability.
That why some of them became Dirk and some of them became Chopra. I mean public education is for everyone in the class, you need to customize it through your own mind.
For those who want to delve into this topic of dynamic analysis in general and modal analysis, I recommend the book Dynamics of Structures: Theory and Application to Earthquake Engineering by Anil K. Chopra
I completely agree. I took Dynamics Structures from Professor Chopra at Berkeley in 1989 and that's where most of my understanding came from that went into this video. It's my favorite book on the topic as well.
thank you very much Mr. Bondy. I have final exam of Aseismic design of structures course. I think that ı will do it thanks to your great teaching. I appreciate.
i completely agree that the bibliography for engineering is way too "mathematical" and "theoretical". i mean its hard to find manuals that explain engineering topics in a practical and applicable way.
27:00 - It's been a while since I learned this, and nothing was called participation factors. However, I believe if we mass normalize the modes then these participation factors are indeed meaningful and the functions are prescaled. Could be 100% wrong, someone with more insight please correct me if so!
wonderfull explanation....thanks so much...please make an example video on push over analysis and time history analysis...this will be appreciated even explaned an example in any software used...
@@dirkbondy Thanks Mr.Dirk Bondy..i will look forward to see your next videos on PushOver&Time History Analysis with an analytical examples after theorical explenation...thanks a lot for teaching us whos you are educating all around the world...
Well, turns out you're not alone with usage of the term "participation function" CSI Etabs tutorials use the same term to explain how to perform a response spectrum analyisis. I recently found out watching one of their videos and that reminded of what you said hehehe.
13:42 I also took Jack Moehle for 2 of my Structures classes. Actually, watching your lectures, I was wondering if you worked closely with him, since your style seems similar.
Hi Dave, I've never actually worked with Jack on anything, but we have corresponded about ACI Code issues a number of times. Maybe I did subconsciously copy his style!
Hi professor, I really appreciate the videos. I have a question. What does it mean if you have torsional as mode 1 or 2 to a concrete shear wall building ?
Hi Beck, Typically that is not a good sign. It means that the building is more likely to twist than translate in an earthquake. It doesn't necessarily mean that you have a serious problem, but the torsional response will be additive in some walls to the translational forces , leading to those walls taking a real beating. We always try to distribute the seismic system evenly such that there is a minimal torsional response.
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This was an almost emotional lecture. We're sooo lucky to have your content available!
I am 100% with your reflective comment that the "overly math intensive stuff" was where feeling lost, once in real engineering terms it makes the most sense. Very relatable. Thank you for all the lectures!
Wow, thankfull Mister. We are engineers, not mathematicians. That is what helped me to feel good 😊
Love your lectures Dirk, you explanations are very easy to follow. You are one of the best educators in this field I have seen.
You're a really good teacher, wish I had someone like you teaching me when I was an undergraduate.
Hi, professor. I am taking the equivalent course at University now I may say that I found this video really useful. I have a background as an architect and now I am in a master in engineering. The way you teach is so helpful to truly understand and visualize what is being analysed. We also have participation factors tho!
You really hit the nail on the head with this one ... Dynamics can be intimidating and sometimes seems almost impossible to understand. I heard they're now putting modal analysis on the afternoon portion of the lateral SE. Two stories and two lumped masses basically as simple as it gets still turns into a huge math problem.
Very well explanations of one of the challenging topics in Structural Engineering. Keep it up!
Great explanation of Response Spectrum Analysis. Actually best I've ever found on UA-cam. Thank you sir!
Besides, I do agree with you that too much and too detailed advanced mathematics in engineering teaching can hamper the formation of engineering intuition and appreciation ability.
That why some of them became Dirk and some of them became Chopra. I mean public education is for everyone in the class, you need to customize it through your own mind.
For those who want to delve into this topic of dynamic analysis in general and modal analysis, I recommend the book Dynamics of Structures: Theory and Application to Earthquake Engineering by Anil K. Chopra
Agreed. I had to use the book by Mario Paz for a course but also had the Chopra book and found that one better and very well explained.
I completely agree. I took Dynamics Structures from Professor Chopra at Berkeley in 1989 and that's where most of my understanding came from that went into this video. It's my favorite book on the topic as well.
thank you very much Mr. Bondy. I have final exam of Aseismic design of structures course. I think that ı will do it thanks to your great teaching. I appreciate.
great commitment
i completely agree that the bibliography for engineering is way too "mathematical" and "theoretical". i mean its hard to find manuals that explain engineering topics in a practical and applicable way.
30:00 how we get that equation is there any book or something with more details on that with demonstration?
17:58 Exactly! Send it to a math student...
Great work, many thanks to you.
We want more civil, particularly structural engineering topics from you sir.
37:30 just cute. thank you for the enlightening and informative lecture.
I wish I could learn from you. Says someone who already has a Ph.D. in Structural Engineering and feels nothing has learnt so far
Very helpful
27:00 - It's been a while since I learned this, and nothing was called participation factors. However, I believe if we mass normalize the modes then these participation factors are indeed meaningful and the functions are prescaled. Could be 100% wrong, someone with more insight please correct me if so!
wonderfull explanation....thanks so much...please make an example video on push over analysis and time history analysis...this will be appreciated even explaned an example in any software used...
Thank you for the comment, Kasim. I intend to add those in the future.
@@dirkbondy Thanks Mr.Dirk Bondy..i will look forward to see your next videos on PushOver&Time History Analysis with an analytical examples after theorical explenation...thanks a lot for teaching us whos you are educating all around the world...
excellent lecture than you for sharing your wealth
Well, turns out you're not alone with usage of the term "participation function" CSI Etabs tutorials use the same term to explain how to perform a response spectrum analyisis. I recently found out watching one of their videos and that reminded of what you said hehehe.
Thank you very much!
13:42 I also took Jack Moehle for 2 of my Structures classes. Actually, watching your lectures, I was wondering if you worked closely with him, since your style seems similar.
Hi Dave, I've never actually worked with Jack on anything, but we have corresponded about ACI Code issues a number of times. Maybe I did subconsciously copy his style!
Hi professor, I really appreciate the videos. I have a question. What does it mean if you have torsional as mode 1 or 2 to a concrete shear wall building ?
Hi Beck, Typically that is not a good sign. It means that the building is more likely to twist than translate in an earthquake. It doesn't necessarily mean that you have a serious problem, but the torsional response will be additive in some walls to the translational forces , leading to those walls taking a real beating. We always try to distribute the seismic system evenly such that there is a minimal torsional response.
@@dirkbondy thank you for your comments.
22:30
Thank You very much
thanks
Shout outs to Mr. Tennis Ball
16:00 really tears
Waw
Thk u sir
God bless you
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