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In this model, linkages are modeled as rigid elements using the Rigid Material node as we are only interested in the kinematics of the mechanism.
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A Joint node can establish a connection between a Rigid Material or an Attachment node and the ground (Fixed). This helps in avoiding extra geometry components.
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The given initial velocity of the slider is enforced by choosing the Force initial values option in the Consistent initialization list found in the Rigid Material node.
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Click Add.
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Click
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Select the object r1 only.
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Select the object rot1 only.
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In the Model Builder window, under Component 1 (comp1) right-click Materials and choose Blank Material.
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Specify the du/dt vector as
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In the Model Builder window, under Component 1 (comp1)>Multibody Dynamics (mbd)>Rigid Material 2>Initial Values 1 click Center of Rotation: Boundary 1.
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Locate the Axes of Joint section. From the Joint translational axis list, choose Attached on source.
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Click in the Graphics window and then press Ctrl+A to select both domains.
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Locate the Coloring and Style section. Find the Line style subsection. From the Type list, choose Tube.
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Click OK.
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Click Import.
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Browse to the model’s Application Libraries folder and double-click the file slider_crank_mechanism_aA.txt.
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In the Settings window for Point Graph, click Replace Expression in the upper-right corner of the y-Axis Data section. From the menu, choose Component 1 (comp1)>Multibody Dynamics>Acceleration and velocity>Acceleration - m/s²>mbd.u_ttX - Acceleration, X component.
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Select the y-axis label check box. In the associated text field, type Acceleration of point A, x-component (m/s^2).
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In the Settings window for Global, click Replace Expression in the upper-right corner of the y-Axis Data section. From the menu, choose Component 1 (comp1)>Definitions>Variables>Wp - Total potential energy - J.
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Click Add Expression in the upper-right corner of the y-Axis Data section. From the menu, choose Component 1 (comp1)>Multibody Dynamics>Global>mbd.Wk_tot - Total kinetic energy - J.
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Click Add Expression in the upper-right corner of the y-Axis Data section. From the menu, choose Component 1 (comp1)>Definitions>Variables>W - Total energy - J.
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