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Linear Boundry Load

Posted 2013年6月11日 GMT-4 13:03 Structural Mechanics 3 Replies

Kimia Mortezaei
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hi,
My model is a simple square geomechanical model. I am going to apply a linear boundary load along the right side of square but there is no option for doing this. Could you please help me with this. ( at the right side, the load changes with the height).
Thanks,
Kim
3 Replies Last Post 2013年6月13日 GMT-4 02:03
Henrik Sönnerlind COMSOL Employee

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Posted: 1 decade ago 2013年6月12日 GMT-4 04:51
Hi,

Please see the answer in www.comsol.com/community/forums/general/thread/37337/

Regards,
Henrik
Hi, Please see the answer in http://www.comsol.com/community/forums/general/thread/37337/ Regards, Henrik
Kimia Mortezaei
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Posted: 1 decade ago 2013年6月12日 GMT-4 19:00
Thanks. I think I don't get the answer. my goal is to define a linear boundary condition along a side. what you said was creating an equation in text field. But when I create this equation it couldn't identify the parameter for example "Z" (height). where should I define this parameter. Sorry I am new in COMSOL.
Thanks. I think I don't get the answer. my goal is to define a linear boundary condition along a side. what you said was creating an equation in text field. But when I create this equation it couldn't identify the parameter for example "Z" (height). where should I define this parameter. Sorry I am new in COMSOL.
Henrik Sönnerlind COMSOL Employee

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Posted: 1 decade ago 2013年6月13日 GMT-4 02:03

Thanks. I think I don't get the answer. my goal is to define a linear boundary condition along a side. what you said was creating an equation in text field. But when I create this equation it couldn't identify the parameter for example "Z" (height). where should I define this parameter. Sorry I am new in COMSOL.


Hi,

No problem, everyone has to be a newbie sometime.

The global coordinates (X,Y,Z) or (x,y,z) are always available for use in expressions.

In a geometrically nonlinear analysis there is a subtle difference: (X,Y,Z) are the original (undeformed) coordinates and (x,y,z) are the current (deformed) coordinates.

Regards,
Henrik
[QUOTE] Thanks. I think I don't get the answer. my goal is to define a linear boundary condition along a side. what you said was creating an equation in text field. But when I create this equation it couldn't identify the parameter for example "Z" (height). where should I define this parameter. Sorry I am new in COMSOL. [/QUOTE] Hi, No problem, everyone has to be a newbie sometime. The global coordinates (X,Y,Z) or (x,y,z) are always available for use in expressions. In a geometrically nonlinear analysis there is a subtle difference: (X,Y,Z) are the original (undeformed) coordinates and (x,y,z) are the current (deformed) coordinates. Regards, Henrik

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