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hello guys, i need help with visualizing my manipulator in Mechanics explorer!
There are a few common reasons why this happens: The File Solid block refer to the STL files using (path+filename), and the fil...

4 years ago | 1

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Answered
Why doesn't mech_import read my .xml files
The import command can only read XML files that were exported by the Simscape Multibody plugin for supported CAD systems. Make ...

4 years ago | 0

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Is there any prescribed method to model joints with clearances in SimMechanics?
In Simscape Multibody (formerly named SimMechanics), you can enable joint limits to simulate joints with clearance. You can ena...

4 years ago | 1

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Answered
Placing a Joint on a Moving Center of Mass in Simscape Multibody
To measure the location of the CG, you can use the Inertia Sensor block. https://www.mathworks.com/help/physmod/sm/ref/...

4 years ago | 0

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Is it possible to analyze the flexible multibody with hard initial position?
Hi Makoto, There are some options: You can define the initial positions and speeds of the joints that connect the flexible be...

4 years ago | 1

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Whats going on with this example in Mathworks? (user-added-coordinate-systems)
Hi Giorgos, You need to make sure the frames that are connected to the Common Gear Constraint have the correct orientation. Th...

4 years ago | 0

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Model an Atwoods Machine
The Pulley Block is very useful for these kinds of systems. Take a look at this Simscape Multibody example of a block and tackl...

4 years ago | 0

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How to locate all the continuous blocks in a Simulink/Simscape model?
Hi Spencer, Normally this diagnostic will indicate that the model must have no continuous states to use the discrete solver. G...

4 years ago | 0

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Center of mass of a system composed by sub-assemblies in SimMechanics 2G
Hi Marcello, You can extract the information you are looking for using the Simscape Multibody Inertia Sensor, added in R2019b. ...

4 years ago | 0

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[SimMechanics Gen 2] Translation in global world frame
Hi H, The Rigid Transform block always operates relative to the base frame. If you have a parameterization that is relative to...

4 years ago | 0

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Revolute Joint measure angle / normalize
Hi Tobias, I believe there is a solution using the mod block. See screenshot below and attached model. --Steve

4 years ago | 0

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I have some 3D models made in CATIA,i want to know how can i bring them to MATLAB workspace and perform optimization on the part?
The File Solid block can read in generic CAD formats as well as CAD software-specific formats, such as CATIA. Among the suppo...

4 years ago | 0

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Simulating friction on floor for a humanoid in simmechanics second generation
As long as your friction force depends on the normal force, you have the signs correct, and you make it into static friction (re...

4 years ago | 0

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simmechanics, transfer functions
You need to add input signals from input ports at your input locations (actuating joints, perhaps?) and then get output signals ...

4 years ago | 0

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How do I make a little cart (prismatic joint) move from point A to point B in simmechanics second generation
Your input should be a Ramp block followed by a saturation block to limit the output to 5. --Steve

4 years ago | 0

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Expand Simulink student licence to use more blocks
You need to somehow reduce the number of blocks by a factor of 5. Some suggestions: Combine blocks into more complex express...

4 years ago | 0

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How do I visualize Mechanics Explorer of referenced models?
Through release R2021b, you cannot visualize the simulation results within the Mechanics Explorer of a referenced model. Some...

4 years ago | 1

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How to keep a solid stationary even when a force is acting upon it?
Hi Samuel, I adjusted your model so that the red brick is rigidly attached to ground using a Rigid Transform, and the motor is ...

4 years ago | 0

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How to define joint angles in a .mat file
You can save any numerical data to a .mat file using the save command. You load that file using the load command. Once the v...

4 years ago | 0

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How to co-simulate Simscape multibody and unreal engine?
Hi Jingchao, MathWorks provides blocks in a number of products that allow you to send information to Unreal and bring informati...

4 years ago | 0

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Answered
Double Wishbone Suspension code
Hi Mahdy, There is a shipping example in Simscape Multibody that has a double-wishbone suspension https://www.mathworks.com/he...

4 years ago | 0

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How can you define the units of a multibody PS Constant Block?
Starting with release R2019a, it is possible to specify units on all physical signal blocks, and unit conversions are handled au...

4 years ago | 0

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Modelling backlash in joints SIMSCAPE (Multibody)
For a square hole, you can just enable joint limits. For a round (or other shaped) hole, you place a planar joint at connecti...

4 years ago | 0

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In simscape vehicle template, body is not getting apllied to truck amandla (3axle) configuration. It is showing errors, due to which I can't configure vehicle model
Hi Ameya - that is a bug in the UI, thank you for catching it. It is passing the wrong argument to sm_car_vehcfg_setBody(). ...

4 years ago | 0

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Simscape Multibody Link exports all STEP files in grey color
Check carefully how the colors are assigned to the parts in SolidWorks. Even if the part appears to have a color, if the color ...

4 years ago | 0

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Possibility to run Simscape Multibody model without Simscape Multibody license using Restricted Mode
Hi Steven, Can you share the model? I can think of a few things: There are MATLAB commands in the PostLoadFcn or in a mask ...

4 years ago | 0

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Singularity error encountered when calculating inverse dynamics of a elastic joint.
Hi Ryan, The model as provided was missing the stiffness and damping in the Internal Mechanics settings of the Torsional elasic...

4 years ago | 0

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Simscape Cable System with Non-Rotating Pulley
Hi Federico, The Pulley block does not permit slip between the cable and the pulley. You can approximate the friction of the c...

4 years ago | 1

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Simulink hangs once simulation is complete
Hi Graham, I could not reproduce the behavior you were seeing. It does appear, however, that you are not connecting all output...

4 years ago | 0

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singularity error in solution
The diagnostic indicates you have a degree of freedom with no inertia associated with it. If you can post the model we can diag...

4 years ago | 0