Specialized Outputs

 

RecurDyn/MTT2D automates the generation of relevant outputs for a sheet feeding system, saving the user valuable time converting the general outputs into data needed to design or analyze his system. The following table summarizes the custom outputs for RecurDyn/MTT2D.

 

Group

Plot Content

Outputs

Sheet

FM_Contact

FX_Tangential

FY_Normal

TZ_Contact

Contact Forces in the Tangent and Normal Directions to Center of Mass Marker (CM)

_Nodal

Generalized nodal forces at the center position of a segmented sheet body. If there is no nodal force in the body, the result is zero. The force is measured in the reference frame of sheet body (or nodal).

_Air_Resistance

Air Resistance Forces. If the Air Resistance Coefficient option is not checked, the result is zero. The force is measured in the reference frame of sheet body (or nodal).

Impulse

Impulse of Contact Forces

Fixed Roller/FE Fixed Roller

MeanSlip_SHT

Slip and Mean Value of the Difference of Tangential Velocities between Roller and Contacted Sheet Bodies

FrictionF_SHT

NormalF_SHT

Contact Forces in the Tangent and Normal Direction at Contact Point

ContactFM_SHT

ContactFX_SHT

ContactFY_SHT

ContactTZ_SHT

Generalized Forces and Torque from Contact Forces between Fixed Roller and Sheet. The force vector is defined acting on CM of the Fixed Roller. Reference frame is CM of the Mother body of the MTT2D subsystem.

Impulse_DT

Impulse of a driving or driven torque

AttackAngle_SHT_HEAD

AttackAngle_SHT_TAIL

Attack Angle (Degree)

ContactPoints

The contact points data are written sorted by the bigger normal force. Each contact point data are 15 values includes contact position vector, normal direction vector, friction direction vector, penetration depth, penetration velocity, tangential relative velocity, friction coefficient, normal force, and friction force. The number of outputs is defined as the “No. of Max Contact Point” on the Contact page of the properties dialog.

Movable Roller/FE Movable Roller

To Sheet Contact

MeanSlip_SHT

Slip and Mean Value of the Difference of Tangential Velocities between Roller and Contacted Sheet Bodies

FrictionF_SHT

NormalF_SHT

Contact Forces in the Tangent and Normal Direction at Contact Point

ContactFM_SHT

ContactFX_SHT

ContactFY_SHT

ContactTZ_SHT

Generalized Forces and Torque from Contact Forces between Movable Roller and Sheet. The force vector is defined acting on CM of the Movable Roller. Reference frame is CM of the Mother body of the MTT2D subsystem.

AttackAngle_SHT_HEAD

AttackAngle_SHT_TAIL

Attack Angle (Degree)

To Roller Contact

MeanSlip_FR

Slip and Difference of Tangential Velocities between Roller and Fixed Roller

FrictionF_FR

NormalF_FR

Contact Forces in the Tangent and Normal Direction at Contact Point

ContactFM_FR

ContactFX_FR

ContactFY_FR

ContactTZ_FR

Generalized Forces and Torque from Contact Forces between Movable Roller and Fixed Roller. The force vector is defined acting on CM of the Movable Roller. Reference frame is the CM of the Movable Roller.

To Other Contacts

SoftNip_NF

Contact Normal Force for Soft Nip

MaxGap_NF

Contact Normal Force for Maximum Gap

Contact Points

ContactPoints_SHT

ContactPoints_FR

The contact points data are written sorted by the bigger normal force. Each contact point data are 15 values includes contact position vector, normal direction vector, friction direction vector, penetration depth, penetration velocity, tangential relative velocity, friction coefficient, normal force, and friction force. The number of outputs is defined as the “No. of Max Contact Point” on the Contact page of the properties dialog.

Movable Roller

Impulse_DT

Impulse of a driving or driven torque

Guides

MeanSlip_SHT

Slip and Mean Value of Difference of Tangential Velocities between Guide and Contacted Sheet Bodies

FrictionF_SHT

NormalF_SHT

Contact Forces in the Tangent and Normal Direction at Contact Point

ContactFM_SHT

ContactFX_SHT

ContactFY_SHT

ContactTZ_SHT

Generalized Forces and Torque from Contact Forces between Guide and Sheet. The force vector is defined acting on joint position of the Guide mother body. Reference frame is the CM of the Guide mother body.

AttackAngle_SHT_HEAD

AttackAngle_SHT_TAIL

Attack angle

ContactPoints

 

The contact points data are written sorted by the bigger normal force. Each contact point data are 15 values includes contact position vector, normal direction vector, friction direction vector, penetration depth, penetration velocity, tangential relative velocity, friction coefficient, normal force, and friction force. The number of outputs is defined as the “No. of Max Contact Point” on the Contact page of the properties dialog.

Sensor

Speed Sensor

Value

Speed of the Sheet passing by the Sensor in a defined direction

Event Sensor

Value

When a head or tail of Sheet is passing by the Sensor, the result is 1, or not 0. Also, users can use the event time.

Distance Sensor

Value

Minimum Distance of the Sheet from Sensor in a defined direction

 

Attack Angle (Degree)

FigureAttack Angle

 

The user can measure an attack angle when a head or a tail of sheet is contacted with a linear guide, arc guide, fixed roller, or movable roller as shown in Figure 1. (In the case of fixed and movable roller are similar the arc guide case in Figure 1.) If two sheet-heads or two sheet-tails are contacted with a guide, the attack angle of later contacted sheet will be reported. The value of attack angle is always reported in the degree unit and less than 90 degree. The value of attack angle can be calculated from the following equation.

 

 

In the FE fixed roller or FE movable roller case, Attack angle is defined as Figure 2. If the deformation is small of the FE roller, then the computing result is similar to the attack angle of the rigid roller.

Figure 2  Attack Angle for the FE Fixed/Movable Roller