CONTACT

Format

CONTACT(id, jflag, comp, rm)

CONTACT(id, index, rm)

Description

The CONTACT function returns a scalar result associated with a Force_Contact element. Two definitions of the CONTACT function are available:

•	CONTACT (id, jflag, comp, rm)

This form returns the force and torque components specified by comp for a Force_Contact element in the coordinate system specified by rm.

•	CONTACT (id, index, rm)

The second form can be used to monitor maximum penetration depth, average point of contact, normal and friction force etc. based on the index. Vector components are always computed in the coordinate system specified by rm. This form always reports the contact forces on the I body as defined in the contact modeling element.

Example

<Post_Request

comment = "Form 1: Total Contact Force"

id = "1"

type = "EXPRESSION"

expr1 = "CONTACT(90,0,1,0)"

expr2 = "CONTACT(90,0,2,0)"

expr3 = "CONTACT(90,0,3,0)"

expr4 = "CONTACT(90,0,4,0)"

expr5 = "CONTACT(90,0,5,0)"

expr6 = "CONTACT(90,0,6,0)"

expr7 = "CONTACT(90,0,7,0)"

expr8 = "CONTACT(90,0,8,0)"

<Post_Request

comment = "Form 2: Other Contact Results"

id = "1"

type = "EXPRESSION"

expr2 = "CONTACT(90,6,0)"

expr3 = "CONTACT(90,7,0)"

expr4 = "CONTACT(90,8,0)"

expr6 = "CONTACT(90,9,0)"

expr7 = "CONTACT(90,13,0)"

expr8 = "CONTACT(90,14,0)"

Arguments

The ID of the Force_Contact element.

jflag

jflag set to 0 or 1 means that forces and moments are reported at the CG of the I or J body, respectively.

comp

Determines the component of contact force that is returned by the CONTACT function when specified in the form CONTACT(id, jflag, comp, rm). comp can be specified as follows:

Comp	Returned value
1	Magnitude of force due to all incidents of the specified Force_Contact element.
2	X-component of the force due to all incidents of the specified Force_Contact element.
3	Y-component of the force due to all incidents of the specified Force_Contact element.
4	Z-component of the force due to all incidents of the specified Force_Contact element.
5	Magnitude of torque due to all incidents of the specified Force_Contact element.
6	X-component of the torque due to all incidents of the specified Force_Contact element.
7	Y-component of the torque due to all incidents of the specified Force_Contact element.
8	Z-component of the torque due to all incidents of the specified Force_Contact element.

index

Determines the quantity that will be returned by the CONTACT statement when specified in the form CONTACT(id, index, rm). index can be specified as follows:

Index	Returned value
1	Penetration depth for the specified contact force element. In case of multiple contact areas, the maximum penetration depth is returned.
2	The average X position of the contact point. This is expressed in the coordinate system defined by rm.
3	The average Y position of the contact point. This is expressed in the coordinate system defined by rm.
4	The average Z position of the contact point. This is expressed in the coordinate system defined by rm.
5	The X component of the total normal force expressed in the coordinate system defined by rm.
6	The Y component of the total normal force expressed in the coordinate system defined by rm.
7	The Z component of the total normal force expressed in the coordinate system defined by rm.
8	The X component of the total tangential force expressed in the coordinate system defined by rm.
9	The Y component of the total tangential force expressed in the coordinate system defined by rm.
10	The Z component of the total tangential force expressed in the coordinate system defined by rm.
11	The magnitude of the total contact area
12	The total number of contact points
13	The total number of contact patches between the I and J body graphics
14	The average penetration depth

Force and moment components are resolved in this coordinate system. RM=0 specifies a global coordinate system.

CONTACT

CONTACT

CONTACT

Format

Description

Example

Arguments

Z-component of the torque due to all incidents of the specified Force_Contact element.