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Model preparing and integration process in MapleSim
https://www.mapleprimes.com/questions/127022-Model-Preparing-And-Integration-Process?ref=Feed:MaplePrimes:Version MapleSim 4
<p>Hello!</p>
<p>Could you pleasу tell me, is it possible to make MapleSim not to simplify equation set of my model and solve equations without simplification? I want to do this because simplification process (reduction of equations number) takes too much time in comparison with integration process.</p>
<p>Thank you!</p><p>Hello!</p>
<p>Could you pleasу tell me, is it possible to make MapleSim not to simplify equation set of my model and solve equations without simplification? I want to do this because simplification process (reduction of equations number) takes too much time in comparison with integration process.</p>
<p>Thank you!</p>127022Mon, 24 Oct 2011 12:34:45 ZMacrohardMacrohardHow can i use a dynamic model doing in maple in maplesim
https://www.mapleprimes.com/questions/123069-How-Can-I-Use-A-Dynamic-Model-Doing?ref=Feed:MaplePrimes:Version MapleSim 4
<p>I have a problem.</p>
<p>I don´t know how can i do for working with a dynamic model equation was done in maple in Maplesim?</p>
<p>Help me please</p><p>I have a problem.</p>
<p>I don´t know how can i do for working with a dynamic model equation was done in maple in Maplesim?</p>
<p>Help me please</p>123069Tue, 21 Jun 2011 22:54:03 ZJorgenecocheaJorgenecocheaMaplesim Excel Import
https://www.mapleprimes.com/questions/120813-Maplesim-Excel-Import?ref=Feed:MaplePrimes:Version MapleSim 4
<p>How do I import/export excel into Maplesim? Also how do I view mpld data files? I tried viewing mpld files using maplesim and maple 14 but it didn't work.</p><p>How do I import/export excel into Maplesim? Also how do I view mpld data files? I tried viewing mpld files using maplesim and maple 14 but it didn't work.</p>120813Tue, 31 May 2011 22:46:50 ZMatphysicsMatphysicsModel integration
https://www.mapleprimes.com/questions/119998-Model-Integration?ref=Feed:MaplePrimes:Version MapleSim 4
<p>Hello!</p>
<p>I've got a question about model integration process.</p>
<p>I've tried to solve quite complex mechanical model and this messages have appeared.</p>
<p> </p>
<p><em>Computing initial conditions...</em><br><em>Iterate re-initialization...</em><br><em>done.</em><br><em>Simulating...</em><br><em>CreateDataRecord: using dsolve method=rosenbrock_dae</em><br><em>Generating configuration 1</em><br><em>Integrating configuration...</em><br><em>Re-initializing after event at t=4.94271387307997e-009...</em><p>Hello!</p>
<p>I've got a question about model integration process.</p>
<p>I've tried to solve quite complex mechanical model and this messages have appeared.</p>
<p> </p>
<p><em>Computing initial conditions...</em><br><em>Iterate re-initialization...</em><br><em>done.</em><br><em>Simulating...</em><br><em>CreateDataRecord: using dsolve method=rosenbrock_dae</em><br><em>Generating configuration 1</em><br><em>Integrating configuration...</em><br><em>Re-initializing after event at t=4.94271387307997e-009</em><br><em>Generating configuration 2</em><br><em>Integrating configuration...</em></p>
<p>And so on. Integration process takes a lot of time.</p>
<p> </p>
<p>What shall I do with this? Is it possible to tune solver to avoid this problem?</p>
<p>Thank you!</p>119998Wed, 18 May 2011 12:37:42 ZMacrohardMacrohardMeasure Force by Force and Moment in MapleSim
https://www.mapleprimes.com/questions/119090-Measure-Force-By-Force-And-Moment-In-MapleSim?ref=Feed:MaplePrimes:Version MapleSim 4
<p>Hi everyone.. Now, i learn Maplesim.. I want measures force between 2 frame(a and b). which are connected by prismatic joint.</p>
<p>But a force and moment sensor acts as a weld joint.. so althought i measured force but frame b can't move.</p>
<p>who can solve my problem??</p>
<p>thank very much!!!</p>
<p>PS: i want measure force 2 frame to calculate the friction between them.</p><p>Hi everyone.. Now, i learn Maplesim.. I want measures force between 2 frame(a and b). which are connected by prismatic joint.</p>
<p>But a force and moment sensor acts as a weld joint.. so althought i measured force but frame b can't move.</p>
<p>who can solve my problem??</p>
<p>thank very much!!!</p>
<p>PS: i want measure force 2 frame to calculate the friction between them.</p>119090Thu, 21 Apr 2011 16:56:51 ZtratilutratiluSolving ODE system
https://www.mapleprimes.com/questions/103336-Solving-ODE-System?ref=Feed:MaplePrimes:Version MapleSim 4
<p>Hello!</p>
<p>I'm trying to solve numerically an ODE system with piecewise. And this piecewise is very important for this task.</p>
<p>This system describes behavior of a pulley with friction. There are some constants: m, c, g, mu and J. Values of this constants are not important.</p>
<p>> sys := m*a(t) = piecewise(a(t) < a0, F0*time, a(t) >= a0, 0), v(t) = diff(x(t), t), a(t) = diff(v(t), t); <br> > m := 5; F0 := 10; a0 := 5;<br> > initialconditions := x(0) = 0, v(0) = 0;<p>Hello!</p>
<p>I'm trying to solve numerically an ODE system with piecewise. And this piecewise is very important for this task.</p>
<p>This system describes behavior of a pulley with friction. There are some constants: m, c, g, mu and J. Values of this constants are not important.</p>
<p>> sys := m*a(t) = piecewise(a(t) < a0, F0*time, a(t) >= a0, 0), v(t) = diff(x(t), t), a(t) = diff(v(t), t); <br> > m := 5; F0 := 10; a0 := 5;<br> > initialconditions := x(0) = 0, v(0) = 0;<br> > dsolve({sys, initialconditions}, numeric);<br> Error, (in dsolve/numeric/DAE/explicit) unable to obtain the standard form of the DAE system due to the presence of leading dependent variables/derivatives in the piecewise: -5*a(t)+piecewise(a(t) < 5, 10*time, 5 <= a(t), 0)</p>
<p>What can I do with this? Can I use another Maple-function to solve this ODE or is there no possibility to solve such equations numerically?</p>
<p>Thank you!</p>103336Wed, 30 Mar 2011 12:58:53 ZMacrohardMacrohard