Answered
Inverse Dynamics from joint with Friction
Hi Sam, If you are going to prescribe the motion this joint, then the friction force will have no effect on the joint's motion....

5 years ago | 0

Answered
how to give input to sphere to belt forces block in simscape?
Hi Deep, Look at example Gripper_2Whl.slx. It shows you how to use this block, including how to create the input signal as a b...

5 years ago | 0

Answered
What is position violation ?
Hi Hamzah, The error message about not being able to assemble usually means that your model is kinematically impossible. One o...

5 years ago | 0

Answered
Array as input in force damper block
There are many ways to do this. One way to do it for a general translational case where you are connecting any two arbitrarily ...

5 years ago | 0

Answered
How can I apply logics to Spatial Contact Force signals
Hi Fabio, It isn't clear to me why you would want to turn the Spatial Contact Forces for the protusions off. Are you hoping to...

5 years ago | 0

Answered
How to attach a DC motor to joint in Simscape?
Hi all, In R2021a we added interface blocks to more easily connect Simscape Multibody joints to 1D mechanical Simscape networks...

5 years ago | 2

Answered
Change in frame position due to Spheere to plane contact
Hi Pratap, I suspect your joint targets are not set for the orientation of the cart. I don't see a 6-DOF or Bushing Joint to s...

5 years ago | 0

Answered
Visualization problem with SimMechanics explorer
Hi Damian, Normally in this situation, MATLAB cannot find the file or the file is invalid. The message in the Diagnostic viewe...

5 years ago | 0

Answered
how to change frame size in Mechanics explorer
Hi Frederik, You can't adjust the size of that particular icon, but there is a Graphic block that will let you put in a frame m...

5 years ago | 0

Answered
How to change the direction of rotation of gears in revolute joint block by giving torque inputs?
Hi Shravista, If you change the sign of the torque that actuates a joint, it will actuate the joint in the opposite direction. ...

5 years ago | 0

Answered
How to make two planes perpendicular in Simscape Multibody?
Hi Nikola, I think you are trying to constrain the body of the vehicle so that it can roll (rotate about its longitudinal axis,...

5 years ago | 0

Answered
how can i model a spring that has reached its free lenght in simscape multibody?
Hi Alejandro, You can model the spring using the "Internal Mechanics" settings of a prismatic joint, and you can add a hardstop...

5 years ago | 0

Answered
Force emitted from one solid only effecting a certain area of another object (Simscape Multibody)
Hi Sam, It depends what assumptions you are making: Can part B only move along an axis? 2 axes? Can it rotate? Is part B ri...

5 years ago | 0

Answered
Select the type of joint between a multibody system and the world with a variable from the workspace
The most common way to do this is using Variant Subsystems. You add a Variant Subsystem to your model. Inside that Variant S...

5 years ago | 0

Answered
Geometric feature shows centroid instead of centre when modelling frame origin of STEP file
Hi Lai Chung Kwan, If the geometric feature you have selected doesn't pick the location you want, you can pick another one. ...

5 years ago | 0

Answered
How to update mechanics explorer live
Hi vc ch, I have added an example that shows connecting a slider bar to a Simscape Multibody model in this MATLAB Answers post....

5 years ago | 0

Answered
How to change Simscape Multibody model parameter during simulation
Hi Mark, There are variable solid blocks in Simscape Multibody. https://www.mathworks.com/help/physmod/sm/ref/variablebricksol...

5 years ago | 0

Answered
my trial period was extended. I reactivated it, but it keeps coming up with activation screen.
Hi - you need to contact technical support for this issue. --Steve

5 years ago | 0

Answered
How to using slider bar to control joint?
Hi Yuttana, You can use a slider to control a joint. Attached to this answer is sm_four_bar_slider.slx where the crank angle i...

5 years ago | 0

Answered
Simscape Multibody - Error "Model not assembled due to a position violation" when I change the value of the actuation input of a RevoluteJoint
Hi Salih The joints you have in your model (all revolute joints) require that the upper angle of each arm all be actuated to th...

5 years ago | 0

Answered
How to model a Peaucellier Straight line mechanism on Simscape/Simulink?
Hi Sumedh, Thanks for the great question - this is an interesting mechanism. Attached to this answer is a model in Simscape Mu...

5 years ago | 0

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Answered
SimScape Multibody - variable velocity in spur gear simulation
Hi Robert, The oscillations you are seeing are very, very small in magnitude. Here are some possibilities: The center of mas...

5 years ago | 0

Answered
How can I interface Simscape Multibody with 1D translational or rotational domains?
Hi all, In R2021a we added interface blocks to more easily connect Simscape Multibody joints to 1D mechanical Simscape networks...

5 years ago | 0

Answered
Multibody Hydro-Mechanical Converter does not convert vice-versa
Hi Lucas, Your model is pretty close to correct. It is missing a Mechanical Translational Reference frame. In R2021a we added...

5 years ago | 0

Answered
Error when running a satellite model with a 6 DOF joint (simscape multibody)
It appears your model uses a MATLAB expression in the 6-DOF Joint that does not produce an answer compatible with the parameter ...

5 years ago | 0

Answered
Simscape Multibody from Solidworks Assembly
You would have to choose which assumptions to make to model this system. I would suggest putting a spherical joint with joint l...

5 years ago | 0

Answered
Error of smimport xml file
Hi Eleni, I have never seen this error. I would guess the XML file is somehow corrupt or that you have two versions of the fil...

5 years ago | 0

Answered
Model conversion, Can export Multibody Model to Solidworks?
Hi Victor - there isn't an automated way to export an entire Simscape Multibody assembly to SolidWorks. Data for certain parts ...

5 years ago | 0

Answered
Modelling a galaxy with Simscape Multibody
Hi Arpad, > However, I would like to change this simulation to simulate a galaxy instead (with e.g. 400 stars orbiting), is thi...

5 years ago | 1

Answered
How can i accurately sense the torque of a revolute joint whose input is position?
Hi Prithvi, If you configure your joints to take the motion as an input and to automatically calculate the required torque, you...

5 years ago | 0