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"Hinge assembly" problem
Posted Feb 8, 2013, 1:00 a.m. EST Structural Mechanics Version 4.3 1 Reply
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While going through the solved model 'hinge assembly' given in the COMSOL,
I came across some difficulties. Actually, I have to develop a solid model
involving hinge joint similar to what is provided in the aforementioned
example. However, I could not understand few terminologies used in the
model.
Under solid mechanics (in the model builder of the model) two global
constraints have been defined; under which in the constraint expression
it is written as "mod1.solid.b_rig2-mod1.solid.b_rig3". I did not get
any explanation of each of these terms. Because of these two I am
unable to implement similar hinge connections as well.
The model can be found in Model library> Structural mechanics> Connectors and Mechanisms> Hing Assembly.
Can anyone please help?
I came across some difficulties. Actually, I have to develop a solid model
involving hinge joint similar to what is provided in the aforementioned
example. However, I could not understand few terminologies used in the
model.
Under solid mechanics (in the model builder of the model) two global
constraints have been defined; under which in the constraint expression
it is written as "mod1.solid.b_rig2-mod1.solid.b_rig3". I did not get
any explanation of each of these terms. Because of these two I am
unable to implement similar hinge connections as well.
The model can be found in Model library> Structural mechanics> Connectors and Mechanisms> Hing Assembly.
Can anyone please help?
1 Reply Last Post Feb 8, 2013, 2:24 a.m. EST
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Posted:
1 decade ago
Hi,
The 'b' degree of freedom is the rotation around the x axis, as described in "Theory for the Rigid Connector" in the users guide.
The suffix '_rig2' etc. is the tag of the rigid connector to which this DOF belongs.
So the expression "mod1.solid.b_rig2-mod1.solid.b_rig3" forces the rotation around x to be the same for rigid connector 2 and 3.
Regards,
Henrik
The 'b' degree of freedom is the rotation around the x axis, as described in "Theory for the Rigid Connector" in the users guide.
The suffix '_rig2' etc. is the tag of the rigid connector to which this DOF belongs.
So the expression "mod1.solid.b_rig2-mod1.solid.b_rig3" forces the rotation around x to be the same for rigid connector 2 and 3.
Regards,
Henrik