Tutorial 03: Spring-Mass System Modeling | Simscape Multibody | Matlab | LUT University | Finland

This video is the third tutorial of the course entitled "Simulation of a Mechatronic Machine" at LUT University, Lappeenranta, Finland.
Author: Suraj Jaiswal
Presenter: Suraj Jaiswal
Video: Suraj Jaiswal
Audio: Suraj Jaiswal
Email: [e-mail] OR [e-mail]
This video is the original contribution of this channel.

[@ChandrajeetPratapSinghCJay]

8:30 added frame to first body/base 24:56 added prismatic/slider joint and rigid transform 31:00 added revolute joint 33:20 added spring 38:00 added constant angular velocity to revolute joint 41:10 added simulink-ps converter

[@DrSurajJaiswal]

@chandrajeet, I think your categorization may help others. Well done !!! :D

[@zacmac]

Thank you Doctor for your well explained tutorials

[@qwertqwerhg5714]

Sir. This video explained basically everything I needed to Know. Brought together and explained in a way that it was easy to follow and understand. Thank you for sparing me from endless trials and searches in the Internet: Kind Regards and much apprechation

[@DrSurajJaiswal]

Hi, thank you very much for the kind words and I am glad that my teaching could help you and save your valuable time :) Do support the channel so that I can make more such videos that can help everyone...

[@RESC_Eng]

Thank you so much Dr.suraj, this is why finland teaching is the best, the best way to learn is by doing as Dr.peter cork saied, your teaching method is absolutely amazing .

[@PoongavanamPedd]

Great work! Thank you for the valuable videos

[@DrSurajJaiswal]

Thank you for a positive feedback. :) Please show your support by subscribing the channel.

[@ahmadismail4400]

Thank you dr. 😊 from Germany

[@DrSurajJaiswal]

You are welcome buddy and thank you too for the support 😊

[@thuongphamxuan9637]

Thank you very much for your tutorial. It helps me a lot.

[@DrSurajJaiswal]

I am glad to hear that. Please support the channel by subscribing it. :)

[@Alfredocan888]

Very good video, pretty well explained and easy to understand.

[@DrSurajJaiswal]

Thank you for the kind words Alfredo :)

[@mohammadghanatian114]

Will you talk about cables and pulleys in the future videos?

[@DrSurajJaiswal]

Hi, I have already spoken about cables in my Tutorial 04: kzbin.info/www/bejne/oafZfa2oatV0Zq8

[@mohammadghanatian114]

@@DrSurajJaiswal I already have watched this video. Your attention to detail is just perfect and I learned a lot from you. Please make a video about a simulation that consists winding and unwinding cables if that's possible.

[@DrSurajJaiswal]

@@mohammadghanatian114 Thank you very much for your kind words and I am happy that you could learn something from my videos. :) Well I cannot promise but I will consider your suggestion.

[@TECHNICALCLASSES_TC]

can i generate Python n code through this model

[@alecsebastiani9904]

thanks for the video, how could I act if I need to make a controller to control the displacement of the mass?

[@nucspartan321]

Why do you keep putting gravity in the y-axis? Seems like simscape has defaults setup for gravity to be in the z

[@DrSurajJaiswal]

Hi, Yes you are correct about that. However, I prefer to model as per reality. This way I do not get confused about different axis. In my mind, Y is always vertical and X is horizontal.

[@mishalmohanlal2096]

Hi Dr Suraj, can Simscape be used to model coupled elastic pendulums? I have a system which I am solving using the Lagrangian, however there a numerical issues which arise.

[@yoxanangeles8629]

Hello, do you know how to use the Spatial Contact Force block? a video with that block would be great :)

[@khalildiha7229]

Good video, it's well done... But i don't understand the way you configure the rigid transform : There are two pairs, and each pair have B(Base) and F(follower) ports, which frame should be projected on the other? and why you used two rigids transform on prismatic joint? I thought that one should be necessary what about natural grequency (natural pulsation)? I thought that if i exceed this value (10 rad/s), they'll be an instability but i tried with 15 rad/s, the system ran normally, what interpretation to give about it? Kind regards

[@DrSurajJaiswal]

About your question on prismatic joint, I think you should watch this video. I have clarified everything here. You will get a much better understanding: kzbin.info/www/bejne/jX_VnKushqeEfbc

[@DrSurajJaiswal]

about the question of natural frequency, it is a bit tricky. It is because there are some natural frequencies where the system will be critical but then there are some regions between those frequencies where the system behaves normal. So i would suggest you not to go there in detail because a lot of things come into action then.

[@khalildiha7229]

@@DrSurajJaiswal Okay, thank you

[@khalildiha7229]

@@DrSurajJaiswal Thank for the link

[@DrSurajJaiswal]

@@khalildiha7229 :)

[@jordankemguimatio5109]

nice video, I have a question regarding thesame simulation but in the y-direction( direction of gravity ) without any actuation, but just with gravitational force( free fall ). The body keeps on oscillating by free fall. how do i obtain steedy state? that means the body just pulling (with its proper weight) the spring and come at rest as in the reality?

[@DrSurajJaiswal]

that's a very good question Jordan, I would suggest that you can play around with the additional mass and spring coefficient. It may help you answer your question. :) (NOTE: Please, like and subscribe to my channel it needs support to reach to a larger audience)

[@jordankemguimatio5109]

@@DrSurajJaiswal i will subscribe and Share 🤝. i tried changing the Spring coefficient but it on oscillating, just That the frequency changes as the Spring coefficient or mass varies. I don’t also want it to come at rest with a damping mechanism. I Want that by starting the Simulation the weight first pull without oscillations. In other words i want to obtain norminal length of Spring plus Extension without oscillations.

[@amirhosseinansari9857]

Hi how we can find your slides ?

[@DrSurajJaiswal]

Unfortunately, you cannot get hold of my slides as it’s against the university policy to distribute the slides. Sorry about that!

[@yogenderkumar7873]

Thanks sir🙏

[@DrSurajJaiswal]

Welcome :)