CONTF: Contact force??
Hello,
I need a contact force as result i have used control card CONTF In H3D file i got result such as
Contact force (grid)
Contact Traction/ Normal pressure
can i know the relation between contact force and contact traction / normal pressure
Answers
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Please refer below post.
https://community.altair.com/community?id=community_question&sys_id=12864c3a1b2bd0908017dc61ec4bcbcf0 -
Hello Rahul Sir,
i want to know the relation between contact force and contact traction / normal pressure in hyperview,
i am correlating my results with other software results. From that software i got contact force directly. But in hyper view i got results in contact force and contact traction / normal pressure. If i go with mean contact pressure value from hyperview multiplying with Area of surface i getting the contact force close to early result from other software. If i check contact force in hyperview which is very less. Later i found it as grid contact force. Now i am searching for relation between contact force and contact traction / normal pressure.
Thanks in advance
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Contact force is generated when parts come in contact and is proportional to the penetration distance. It is a nodal quantity and is available at each node and can also be visualized from vector panel in HV. To obtain the total force on each master surface it can be obtained in ascii *cntf file (request CONTF in opti format).
The Contact Traction/ Normal(s) is simply the contact pressure. Normal is the default, and if friction is defined both normal and shear.
This is illustrated in the tutorial you mentioned and tutorial OS-1392 which compares the results with N2S and S2S.
The result type is a 'Pressure' which you can look up how is calculated if you type in the search 'Computed Results' > click HyperView and scroll down the page.
Contact Traction / Tangent Mag,T1,T2: Let’s consider a small block pressed and sliding on a large block with frictional resistance, we should expect the contact tangent traction direction correlated with the sliding direction and the contact tangent traction magnitude correlated with the contact pressure.
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