25.6.1. Arc Guide

An arc guide is dependent on a guide part. If an arc guide is created, a sheet to arc contact is automatically created. Its contact type can be represented as a sphere to extruded arc contact. As shown in Figure 25.50, the user first should define whether the contact direction is up or down of the guide. When a sheet body is contacted with the arc guide, the plus normal direction is in up or down direction of a relative position vector from the arc reference position to the center point of the sheet body. The tangent direction can be determined from the specified normal and depth directions by the right hand rule. The plus direction of Guide velocity is determined as the plus tangential direction.

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Figure 25.50 Sheet to arc guide contact

25.6.1.1. Modeling Options

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Figure 25.51 Arc Guide

  • Point, Point, Direction, Angle

    • Point: Selects a point to define the center of the arc guide.

    • Point: Selects a point to define the starting point on the circumference of the arc guide. The distance between the first point and the second point becomes a radius of the arc guide.

    • Direction: Defines a direction for revolution of the arc guide.

    • Angle: Defines a revolution angle of the arc guide.

  • Point, Point, Direction, Angle, Depth

    • Point: Selects a point to define the center of the arc guide.

    • Point: Selects a point to define the starting point on the circumference of the arc guide. The distance between the first point and the second point becomes a radius of the arc guide.

    • Direction: Defines a direction for revolution of the arc guide.

    • Angle: Defines a revolution angle of the arc guide.

    • Depth: Defines a depth of the arc guide.

  • Point, Point, Direction, Angle, Direction, Depth

    • Point: Selects a point to define the center of the arc guide.

    • Point: Selects a point to define the starting point on the circumference of the arc guide. The distance between the first point and the second point becomes a radius of the arc guide.

    • Direction: Defines a direction for revolution of the arc guide.

    • Angle: Defines a revolution angle of the arc guide.

    • Direction: Defines a depth direction of the arc guide.

    • Depth: Defines a depth of the arc guide.

  • GuideMotherBody, Point, Point, Direction, Angle

    • GuideMotherBody: Selects a body to define the parent body of the arc guide.

    • Point: Selects a point to define the center of the arc guide.

    • Point: Selects a point to define the starting point on the circumference of the arc guide. The distance between the first point and the second point becomes a radius of the arc guide.

    • Direction: Defines a direction for revolution of the arc guide.

    • Angle: Defines a revolution angle of the arc guide.

  • GuideMotherBody, Point, Point, Direction, Angle, Depth

    • GuideMotherBody: Selects a body to define the parent body of the arc guide.

    • Point: Selects a point to define the center of the arc guide.

    • Point: Selects a point to define the starting point on the circumference of the arc guide. The distance between the first point and the second point becomes a radius of the arc guide.

    • Direction: Defines a direction for revolution of the arc guide.

    • Angle: Defines a revolution angle of the arc guide.

    • Depth: Defines a depth of the arc guide.

  • GuideMotherBody, Point, Point, Direction, Angle, Direction, Depth

    • GuideMotherBody: Selects a body to define the parent body of the arc guide.

    • Point: Selects a point to define the center of the arc guide.

    • Point: Selects a point to define the starting point on the circumference of the arc guide. The distance between the first point and the second point becomes a radius of the arc guide.

    • Direction: Defines a direction for revolution of the arc guide.

    • Angle: Defines a revolution angle of the arc guide.

    • Direction: Defines a depth direction of the arc guide.

    • Depth: Defines a depth of the arc guide.

25.6.1.2. Properties

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Figure 25.52 Guide Arc property page [Arc Guide page]

  • Mother Body: Defines the name of the guide body including the guide.

  • Reference Position: Defines the position of reference marker of the extruded arc geometry.

  • Reference Direction: Defines the x-axis of reference marker of the extruded arc geometry.

  • Extruded Direction: Defines the z-axis of reference marker of the extruded arc geometry.

  • Radius: Defines the radius of the extruded arc geometry.

  • Depth: Defines the depth of the extruded arc geometry.

  • Angle: Defines the angle of the extruded arc geometry

  • Contact Direction: Shows the direction of the contact with the sheet on the guide.

  • Check Edge: When the guide radius is smaller than the lengths of a contacted shell element, the contact is not worked. In this case, if this option is ON, the edge geometries of the guide are checked in the sheet-to-guide contact.

  • Contact Parameter: Allows the user to modify contact parameters by clicking To Sheet. In this dialog box, the user can modify the contact parameters of contact forces applied between the sheet and the guide. Refer to Contact Formulations for MTT3D.

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    Figure 25.53 Contact Parameter dialog box

  • No. of Max Contact Points: Defines the number of max contact point for output. User can define this value from 1 to 5000. This value only affects Force Display and RPLT data about the contact points. The default value is 10.

  • Force Display: Graphically displays the all contact force vectors (the sum of the normal and tangential contact force) at each contact point up to the No. of Max Contact Point.