﻿ Dialog: Element Properties

# Dialog: Element Properties

## Element Properties dialog-box.

The Element Properties is a read-only dialog-box.

The Element Properties dialog-box [Properties of the Element] shows the element's kinematic motion-values and if available, its kinetostatic force values,

The properties are only at the Master Machine Angle.

Elements with motion-values are:

 • Wire, Part, Pin-Joint, Slide-Joint, Point, Line, Circle, Arc, Cam...

The Element Properties dialog-box shows:

 • Element Name, Element Part, Element's Mechanism
 • Properties:
 o V:  a Vector
 o ℝ :  a Real Number
 o |n| : Absolute Real Number
 o X, Y, ΔX, ΔY, Θ, ω, α, ΔΘ, Δω, Δα

### How to Open the Element Properties dialog-box

In the graphic-area:

 • + Click an element.

#### 'Wire' Element Properties dialog

 1 CTRL+Click a wire

A wire has a maximum of 3 Data Channels

In the example: the Output Data-Type in the Motion FB is Rotary.

At the top of the dialog you can see the wire Element's Name, and the Element's Owner Part and Element's Mechanism.

In this example:

 • Property: Angle, Angular Velocity, Angular Acceleration, Data-Type
 • Data-Type: is Rotary Coordinates

#### Part Element Properties dialog

In this case, CTRL + Click a Part-Outline

At the top of the dialog you can see the Element's Name, the Element's Part, and the Element's Mechanism.

Property:

 • Kinematic: Angle of Part in Mechanism Plane, Angular Velocity or Part in Mechanism Plane
 • Instant Centre: The Part has an instant Centre of rotation: X and Y coordinates of the instant-Centre in Mechanism Coordinates

When the Part has Mass

 • Centroid: X and Y coordinated of Centre of Mass
 • Mass: Value
 • Inertia: Value
 • Mobility: -1 if kinematically solved

#### Pin-Joint Element Properties dialog

In this case, CTRL+Click a Pin-Joint at the end of Part in a four-bar Mechanism.

At the top of the dialog you can see the Element's Name, the Element's Part, and the Element's Mechanism.

Property:

 • Power On: True or False (T or F) - if the Power Source is given to this Pin-Joint
 • Broken: True or False (T or F) - if the Joint in the kinematic-chain is 'Broken' at this instant in the machine cycle
 • Solved : True or False (T or F) - if the Joint is a child to a kinematically-defined chain
 • Bearing Force
 o Fx and Fy ; Vectors in Mechanism Coordinates
 • Torque
 o Tz ; Vector normal to Mechanism Plane (if the Pin-Joint is the Power Source)

#### Slide-Joint Element Properties dialog

In this case, CTRL+Click a Pin-Joint at the end of Part in a four-bar Mechanism.

At the top of the dialog you can see the Element's Name, the Element's Part, and the Element's Mechanism.

Property:

 • Power On: True or False (T or F) - if the Power Source is given to this Pin-Joint
 • Broken: True or False (T or F) - if the Joint in the kinematic-chain is 'Broken' at this instant in the machine cycle
 • Solved : True or False (T or F) - if the Joint is a child to a kinematically-defined chain
 • Drive Force
 o Fx ; Force along positive direction of Slide-Joint (if the Power Source is the Slide-Joint

#### Point Element Properties dialog

In this case, CTRL+Click a Point at the end of Part in a four-bar Mechanism.

At the top of the dialog you can see the Element's Name, the Element's Part, and the Element's Mechanism.

Property:

 • Part Pos: Position of the Point; Part Coordinates
 • Mech Pos: Position of the Point; Mechanism Coordinates
 • Glob Position: Position of the Point; Global Coordinates (Z does not appear!)
 • Velocity, Acceleration Vectors
 o i,j: the coordinates of the Velocity / Acceleration Vector, X and Y directions; Mechanism Coordinates
 o |n|: the magnitude of the Velocity / Acceleration Vector
 o Θ: the direction of the velocity Vector; Mechanism Coordinates

See Also: Double-click a Point to show the Point Vectors and Position dialog-box.

#### Line Element Properties dialog

In this case, CTRL+Click a Line.

At the top of the dialog you can see the Element's Name, the Element's Part, and the Element's Mechanism.

Property:

 • Line Data:
 o Δx, Δy : the change in x and y from the Line's start-Point and end-Point
 o |n|: the length of the Line
 o Θ: the angle of the Line relative to the Mechanism Coordinates
 • Kinematic:
 o ω : angular velocity of the Line
 o α : angular acceleration of the Line

#### Circle Element Properties dialog

In this case, CTRL+Click a Circle.

At the top of the dialog you can see the Element's Name, the Element's Part, and the Element's Mechanism.

Property:

 o |n|: the Radius of the Circle
 • Centre:
 o x & y : the position of the centre of the Circle in Mechanism Coordinates

#### Arc Element Properties dialog

In this case, CTRL+Click an Arc.

At the top of the dialog you can see the Element's Name, the Element's Part, and the Element's Mechanism.

Property:

 o |n|: the Radius of the Circle
 • Centre:
 o x & y : the position of the centre of the Arc in Mechanism Coordinates
 • Start
 o x & y, the position of the start-Point of the Arc in Mechanism Coordinates
 o Θ : the angle of the start-Point from the centre of the Arc
 • End
 o x & y, the position of the end-Point of the Arc in Mechanism Coordinates
 o Θ : the angle of the end-Point from the centre of the Arc

#### Cam Element Properties dialog

In this case, CTRL+Click a 2DCam.

At the top of the dialog you can see the Element's Name, the Element's Part, and the Element's Mechanism.

Property:

 • Contact 1 & 2:
 o x & y: the coordinates of the contact Point of Cam 1 and 2
 • Pressure Angle 1 & 2:
 o Θ : the Pressure Angle of the Roller with Cam 1 and 2
 • Curvature 1 & 2:
 o |n| : the Curvature of Cam 1 and 2
 • Force
 o Fx & Fy : the Contact Force of the Cam on the Roller, given in the X and Y directions, with Mechanism Coordiantes

#### Polyline Element Properties dialog

In this case, CTRL+Click a Gear-Pair

At the top of the dialog you can see the Element's Name, the Element's Part, and the Element's Mechanism.

Property:

 • Count
 o |n|: number of facets to the Polyline (*100?)

Tutorial and Reference Help Files for MechDesigner and MotionDesigner 13.2 + © Machine, Mechanism, Motion and Cam Design Software by PSMotion Ltd