Belt Output
You use the Belt wizard dialog box to create requests on belt segments for Poly-V Grooved and Trapezoidal Toothed. A belt outputs the belt results at a specific point in space, which is defined by the initial position of a belt segment part.
The component outputs the following results:
■Angular Displacement- Rotational displacement relative to the attachment part. Only active if the pulley is not fixed.
■Angular Velocity - Angular velocity relative to the attachment part. Only active if the pulley is not fixed.
■Angular Acceleration - Angular acceleration relative to the attachment part.
The requests will return the following results:
■For Poly-V Grooved and Trapezoidal Toothed:
♦y_displacement - Transverse displacement of belt relative to the reference position
♦x_velocity - Local belt velocity
♦y_velocity - Transverse velocity of belt relative to the reference position
♦x_acceleration - Local belt acceleration
♦y_acceleration - Transverse acceleration of belt relative to the reference position
♦tension_force - Local belt tension
♦friction_force - Tangential force component due to friction on the pulley
♦normal_force - Radial force component due to contact on the pulley
■In addition, for Trapezoidal Toothed:
♦tooth_force_x - Tangential force component of tooth contact force at the pulley
♦tooth_force_y - Radial force component of tooth contact force at the pulley
The x-direction is defined as parallel to the belt path, and the y-direction perpendicular to the belt path. The results are based on the segment closest to the reference position unless you select average results. Then the results are based on the three closest segments.
When you re-wrap the belt, Adams Machinery re-creates requests for all segments that also exist in the new belt. You cannot use gear output for a constrained-type belt.
Belt Tension Calculation
The estimated tension value reported in the Belt Wizard after wrapping a belt will differ from the actual tension calculated in the belt during the simulations (at the locations specified by the user in the Belt Wizard). This is because the estimated tension in the wizard does not consider local belt tension due to fitting of the belt into pulley grooves and dynamic tension in the spans between adjacent pulleys like the simulation results do. The estimated tension calculation in the wizard simply equally spaces the belt segments along an ideal path trough the pulleys and estimates tension based on axial stiffness.