http://www.mapleprimes.com/products/MapleSim/MapleSim 3 en-us 2026 Maplesoft, A Division of Waterloo Maple Inc. Maplesoft Document System Sun, 05 Apr 2026 22:10:28 GMT Sun, 05 Apr 2026 22:10:28 GMT MapleSim 3 Questions and Posts on MaplePrimes http://www.mapleprimes.com/images/mapleprimeswhite.jpg http://www.mapleprimes.com/products/MapleSim/MapleSim 3 http://www.mapleprimes.com/questions/101445-Contact-Event-With-MapleSim?ref=Feed:MaplePrimes:Version MapleSim 3 <p>Hello!</p> <p>I want to make a model with an inner moving circle touching a non-moving, stiff outer circle. 2 differential equations describe the movement of the inner circle, i already have modelled thisand i have the x and y coordinates of the most "exposed point" which will touch the outer circle, as output variables (i could also add the derivatives as output). When the 2 circles touch, i want to "tell" the differential equation model the 2 new derivatives for x and y... <p>Hello!</p> <p>I want to make a model with an inner moving circle touching a non-moving, stiff outer circle. 2 differential equations describe the movement of the inner circle, i already have modelled thisand i have the x and y coordinates of the most "exposed point" which will touch the outer circle, as output variables (i could also add the derivatives as output). When the 2 circles touch, i want to "tell" the differential equation model the 2 new derivatives for x and y to model the correct movement change of the inner circle (also got those 2 equations).</p> <p>Is it possible to model the stiff, non moving outer circle, and to draw it?</p> <p>How would MapleSim handle the contact events of the two circles, and what are my options to find the exact touching points as good as possible?</p> <p>Thank You.</p> 101445 Fri, 04 Feb 2011 22:47:14 Z vicaut vicaut