Contact Modeling with Simscape

[@oluwaferanmi100]

Great explanation, thank you .

[@thanhlev]

Where can I get the Rotational and Translational Simscape?

[@williamsuliman8661]

I am trying to simulate the contact forces between a fixed plane and a sphere . However, when I recreate the model and run the simulation , I get the following error "External Force and Torque External_Force_and_Torque_PlaB has its follower port rigidly connected to the world frame; it has no effect. You can configure this diagnostic in the Simscape Multibody Configuration Parameters dialog." How can I fix this error?

[@김태원-x4b]

Oh, I have a same problem with you. Did you fix it?

[@roboticseabass]

Hi folks, This error message is due to default model settings and has an easy fix. I've created a MATLAB Answer showing the solution, since many people are running into this issue: www.mathworks.com/matlabcentral/answers/378561-rigidly-connected-port-error-with-simscape-multibody-contact-forces-library

[@ishankas4530]

Hi Sebastian i really appreciate your work. Im a student and i was asked to create a remote laboratory experiment of finding friction of a mass sliding down a surface with the gravitational force when we change the angle of the surface( plank) and the mass . Would really appreciate any tips regarding this. Thanks

[@thanghohuu2346]

I am using matlab / simulink 2018a. When connecting the slider gain, const, gain, simulink-ps blocks in Simulink enviroment , the robot configuration is wrong when adjusting the matching variables, along with the wrong direction of the axes. how to fix it? thank you?

[@felixfrigon239]

hi , is there a way to rotate the contact plane? I want to simulate a car hitting a wall. Thanks

[@vishalnaik3632]

Is there any way to find the position of the point of contact?

[@hoangvuao446]

Thank you guys a lot!

[@HuongHoang-ez9si]

too difficult

[@TehSuperAwesomeSquad]

I'm trying to create a robot fish that swims underwater. Could I tackle the reaction forces with contact modelling or should I be looking at an alternative?

[@roboticseabass]

I'd probably look into the approach at the 13:00 time stamp -- that is, measuring positions/speeds, implementing the hydrodynamic equations in Simulink, and then applying the resulting forces/torques back to the bodies. The overall schematic would look the same, but the equations of a swimming robot would be quite different from those trying to emulate rigid body collisions.

[@jayapriyasubramaniyam1345]

I tried establishing contact forces between a plate and a box, it was failed. I could see the box passing through the plate. Why is it happening?

[@muhammetislambedirbeyoglu3135]

Did you download and applied the simscape multiphysics library and multibody contact forces library, check the video description please.

[@martinprinceton9858]

Hey Sebastian, how did you learn control systems Design, I really want to learn it

[@aarjavkhara3534]

Hey! You might want to have a go at this PID control playlist from MATLAB: kzbin.info/aero/PLn8PRpmsu08pQBgjxYFXSsODEF3Jqmm-y The presenter of those videos (Brian Douglas) has a whole channel dedicated to control systems theory and I found his videos very helpful in my engineering degree. It is a great place to start off!

[@abhijithsriam95]

Is there a way to model the contact between two meshing gears to determine the vibration while they mesh?

[@roboticseabass]

This is possible to add to your models if you have equations to represent that contact. For example, see this video: www.mathworks.com/videos/determining-vibro-acoustic-effects-in-multidomain-systems-using-a-custom-simscape-gear-library-108105.html

[@bilalsadiq45]

Very Disappointed From Sebastian ,As he is not showing and telling the parameters setting in the simulation,,, Thats too bad Sebastian,,Extreme disappointed

[@bilalsadiq45]

Very Disappointed From Sebastian ,As he is not showing and telling the parameters setting in the simulation,,, Thats too bad Sebastian,,Extreme disappointed

[@bilalsadiq45]

Very Disappointed From Sebastian ,As he is not showing and telling the parameters setting in the simulation,,, Thats too bad Sebastian,,Extreme disappointed

[@bilalsadiq45]

Very Disappointed From Sebastian ,As he is not showing and telling the parameters setting in the simulation,,, Thats too bad Sebastian,,Extreme disappointed

[@bilalsadiq45]

Very Disappointed From Sebastian ,As he is not showing and telling the parameters setting in the simulation,,, Thats too bad Sebastian,,Extreme disappointed