## Can I change the state of a prismatic joint betwee...

Does anyone know how to achieve the state transition of a prismatic joint between active and passive in MapleSim? Recently, I want to realize such a state transition of a prismatic joint. Specifically, during a simulation, the joint can either be motion-actuated or passive according to some conditions. Actually, I tried to use SimMecahnics, but I failed. Hope anyone can give me some constructive suggestions. Many thanks!

## Exporting the equations of motion...

Hi,

Is there a way to export all of the equations (from MapleSim) including the casual equations? I used Multibody Analysis template and Equations template but it only exports the acausal equations.

Your help is really appreciated.

## About the projection method used in Maplesim...

Hello,

On my multibody model, I meet a mistake during the simulation which is the following :

"Constraint projection failure at 10s".

1) Do you have a idea on this error message so as to correct the settings for the simulation?

2) I would like to know more about the projection method. If, I'm not wrong, there is not a lot of documentation about the projection method used in Maplesim.

a) Does someone have some references (scientific papers) which present the theory used for the projection method in Maplesim?

b) In ths sense, I would be very interesting about learning the theory of the projection method in order to be able to tune correctly the following options linked to the projection method :

- Projection Iterations
- Projection Tolerance
- Event Projection
- Event Iterations
- Event Hysteresis

Thanks a lot for your help.

## Defining the orientation of a body thanks to matri...

Hello,

Is it possible to define the orientation of a body with a matrix transformation ?

I have seen this option for the fixed frame but not for the rigid bodies.

I would like to define the rigid bodies thanks to transformation matrix so as to make some checking.

Thank you for your help.

## Difference between Inboard frame and Euler for the...

Hello,

In my mechanism, I use absolute coordinates.

For the rotation (namely the initial angles/ angular velocites), I didn't see the difference between Inboard and Euler.

It seems to me that in the two cases, the initial angles are defined with regard to the inertial frame and for both, different kind of rotations can be defined.

Have you some ideas on these two options ?

Thank you for your help.

## Show the 3D construction mode...

Hello,

I don't why I can no longer see my multibody model in the 3D construction mode.

I probably should desactive something.

I would like to observe my system with the kinematic constraints not enforced.

The idea is that my model is computing but the computation is very long. I should have done a mistake in my initial conditions.

Do you have an idea of what to do to reactivate/ show again the 3d contruction mode ?

Thank you for your help.

## Error occurred when I simulate a build-in model...

The following error occurred when I simulate a build-in model, anyone could help me to solve this problem? Thanks first

## Build Uneven ground in MapleSim...

Hi all,

How to build an uneven ground by MapleSim?

I want simulation a car runnung on this uneven ground.

Is there any method , proposal , orientation, or any thing can help me

Thank you

## MapleSim does not show the simulation results...

Hi all,

I met a problem while using the MapleSim7.

When I increase the plot points (which can be modeified in the setting tab) to get more accurate solution,

MapleSim does not show the simulation results (ex. graph) even though the simulation has finished.

MapleSim message only says "Done Simulating", but does not show the results.

When I set plot points "10000", I could obtain the results. However when I set "30000" for plot points,

I couldn't get results.

What is the problem and how can I obtain the results with many number of plot points?

## How to use Stepper Permanent Magnet in MapleSim?...

Hi, I build my simulation system in MapleSim, using the module 'Stepper Permanent Magnet' like this

But when I run this system, I get the followiing error:

System is underdetermined

When I delete the part about 'Stepper Permanent Magnet', the system runs well.

How to solve this problem? How to use 'Stepper Permanent Magnet'?

The Help file of MapleSim cannot proviod such help information.

Thank you.

## Modeling damping in a spherical joint ...

Hello,

I need to model some spherical joints with damping.

Apparently, contrary to revolute joints, it seems that it is not possible to add damping in spherical joints. Indeed, contrary to the revolute joint where there is an option to put spring or damping element, i don't find this option in the spherical joint.

Do you have a idea to model spherical joints with damping (without changing the spherical joint)?

Thanks a lot for your help

## How to building a wall...

Hello,

How to building a wall, I want to use the wall with something (ex:ball) make a elastic collision.

Thank you all.

## Why the ball cannot keep on the circle...

Hello,

I want to simulating a mulitibody system, similar circular motion.

schematic diagram:

result:

Why the ball cannot keep on the circle?

Thanks

## Shared variables between Maplesim and Maple...

Hello,

is there a way I can use data (variables) from Maple environment in the Maplesim environment.

I have a scirpt in maple that generates the robots joints angles and need to use them in the 3D robot built in maplesim. I know I can export/Import data, but this sounds redundant. Is there a way to simply use an input block as a source of the data in maplesim and have the variable name generated in maple used int. Similar to what Matlab/Simulink does..

thanks.

## Compile Maplesim Model to c-code...

Hallo,

I am facing a problem with the c-code generation of maplesim models:

When I am trying to compile a multibody model that contains more than about 80 bodies I get an error "Error, (in GetCompiledProc) internal error: unable to find matching".

Using the code generation template it says "Error in Component cmdGenerateCode eith caption "Generate C code": (in DSN/Pantelides) internal error: unable to find matching"

Has anyone a solution to this?

Edit:

Model: Ref_Model.msim

It is a simple systems of masses connected by spring/dampers.

I am using MapleSim 7.01

The error message occurs when I try to simulate the model in maplesim, too:

Simulating...
Using the Mark II engine
Simplifying system with 600 equations
Simplification removed 0 equations. Remaining equations: 600
Generating simulation code
DAE index reduction
DSN/RunSimulation: internal error: unable to find matching
(in DSN/RunSimulation) internal error occurred during simulation
Simulation failed.

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