Dynamic Part Motion

Tests the motion of a mechanism by driving a body with the mouse. The mouse action creates an external force that moves the body. All the defined dynamic actions (springs, joints , contacts, and so on) are also considered to determine the movement of the mechanism.

Access:

Ribbon: Dynamic Simulation tab Results panel Dynamic Motion . And then click in the Dynamic Part Motion dialog box. Click a body to simulate motion and move the mouse without releasing the button.

As soon as you enable this mode, the software performs calculations without saving them and without time limitations. You can see the mechanism in motion due to gravity, pre-stressed spring, and so on. The software applies a force on the body. Its direction is given by the line between the selection point on the part and the cursor position at each instant. Its magnitude is computed as a function of the distance between the two points. The force appears in the graphics window as a black vector .

You can release the mouse button at any instant. The software stops applying the force, and the mechanism behaves as a function of momentum and the other dynamic actions. Then, you can simulate movement beginning by imposing an initial velocity with the mouse.

Note: Dynamic Part Motion parameters, like Input Grapher and Output Grapher parameters, are not available in the Parameters dialog box.

Dynamic Part Motion panel

	Stops the simulation .
	Starts the simulation.
	Enables imposed motions. When imposed motions are enabled, a red "x" appears in the icon. By default, imposed motions are enabled.
	Saves the position in the graphics window as the initial position of the mechanism. You must stop the simulation to click this icon. Then, exit simulation mode to return to construction mode with the mechanism's new initial position. This function is useful for finding an equilibrium position of the mechanism.
	Restarts the simulation, replacing the mechanism in its position at the beginning of the simulation, and restarts the calculation. The options (for example, damping values) previously used are kept for the new calculation. Note: Available only after you stop the simulation.
	Exits the dialog box and returns to the simulation construction environment. The software returns the mechanism to the position that it had before the simulation was done in this mode.
	Considers damping in the calculations.
	Ignores damping in the calculations.
	Considers light damping in the calculations.
	Considers heavy damping in the calculations.
Parameters
	Sets the multiplication factor for using the mouse movements in calculations. By default, this value is 0.01.
	Sets a maximum for the force applied beyond a specific distance between the application point of the force and the mouse cursor. This specific distance is a function of the weight of the part and the multiplication factor.
	Applies force at each instant.