Here with a better picture i hope.

Here with a better picture i hope.

Here the result i have.

You can see the problems with the simplify and the diff.

Thank you for your help

Here the result i have.

You can see the problems with the simplify and the diff.

Thank you for your help

Of course.

Thank you for help.

Here you have the lines where i have my trouble :

P_1_0:=Matrix([<cos(gamma(t)),-sin(gamma(t)),0>,<sin(gamma(t)), cos(gamma(t)),0 >,<0, 0, 1>]);
AG1_R1:=<(1/2)*r, 0, 0>;
AG1_R0:=simplify(MatrixVectorMultiply(P_1_0,AG1_R1));
V_G1_R0:=map(diff, AG1_R0, t);

I hope it will Ok for you with these informations.

Let me know

Thank you for help.

Of course.

Thank you for help.

Here you have the lines where i have my trouble :

P_1_0:=Matrix([<cos(gamma(t)),-sin(gamma(t)),0>,<sin(gamma(t)), cos(gamma(t)),0 >,<0, 0, 1>]);
AG1_R1:=<(1/2)*r, 0, 0>;
AG1_R0:=simplify(MatrixVectorMultiply(P_1_0,AG1_R1));
V_G1_R0:=map(diff, AG1_R0, t);

I hope it will Ok for you with these informations.

Let me know

Thank you for help.

Thank you for help.

Unfortunately, it still doesn't work but i believe it is because i use gamma(t).

Can you precise me the code ligns to unprotect gamma but also gamma(t) ?

Thank you for help.

Thank you for help.

Unfortunately, it still doesn't work but i believe it is because i use gamma(t).

Can you precise me the code ligns to unprotect gamma but also gamma(t) ?

Thank you for help.

Thank you for help.

However when i do unprotect(gamma(t)); and after simplify(gamma(t));, the result is gamma and not gamma(t) and consequently diff(gamma(t),t) makes bad simplification.

If you have others ideas, it will be great ?

Thank you for help.

Thank you for help.

However when i do unprotect(gamma(t)); and after simplify(gamma(t));, the result is gamma and not gamma(t) and consequently diff(gamma(t),t) makes bad simplification.

If you have others ideas, it will be great ?

Thank you for help.

Thank you for your help. I use Maple 16.

I made the following code :

 unprotect(gamma);

But it doesn't work.

That is to say when i use gamma(t) Maple treats it like the constant gamma.

For example, diff(gamma(t),t) is treated as diff(gamma,t) and so gives 0.

Do you have others ideas ?

Thank you for help.

Thank you for your help. I use Maple 16.

I made the following code :

 unprotect(gamma);

But it doesn't work.

That is to say when i use gamma(t) Maple treats it like the constant gamma.

For example, diff(gamma(t),t) is treated as diff(gamma,t) and so gives 0.

Do you have others ideas ?

Thank you for help.

Thanks a lot for your help.

I can measure a angle in deg now.

I have just on remark concerning the concept of "flange". I understand well the concept of "frame". In multibody analysis, you have to define on each body a frame enabling to describe the movement of your system.

But, for the concept of "flange", may you help of the meaning of the "flange" and how we can use them ?

Thank you for help.

Thanks a lot for your help.

I can measure a angle in deg now.

I have just on remark concerning the concept of "flange". I understand well the concept of "frame". In multibody analysis, you have to define on each body a frame enabling to describe the movement of your system.

But, for the concept of "flange", may you help of the meaning of the "flange" and how we can use them ?

Thank you for help.

Thank you for your help.

I have my problems.

In fact, when you put directly numerical values, the 3D visualisation is automatically updated.

But, when you put symbolic parameters, the 3D visualisation needs to be updated thanks to a button on the 3D visualisation tools.