Re: [sympy] Re: 3D pendulum and equations of motion of multi-body systems (KanesMethod)

2016-08-10 Thread Nuno
In the first place thanks for answering. My doubt right know is connected to the holomonic constraint (distance constraint) and the resulting equations of motion. I don't have much experience with this kind of systems, but the resulting equations of motion seem really large for such a simple pr

Re: [sympy] Re: 3D pendulum and equations of motion of multi-body systems (KanesMethod)

2016-08-10 Thread Jason Moore
Nuno, If you re using KanesMethod it supports two types of constraints: holonomic and non-holonomic. You can supply these constraints to the initializer and then the equations of motion will be formed that take the nonholonomic constraints into account. Note that if you have holonomic kinematic co