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Questions about Load Case

Posted Jul 31, 2012, 1:55 p.m. EDT Modeling Tools & Definitions, Parameters, Variables, & Functions, Studies & Solvers, Structural Mechanics Version 4.3 1 Reply

Chloe Wu
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Hi,

I am new to Solid Mechanics interface. I have a question about the load case.

What does load case mean? Also what are lgGravity, lgForce, cgGravity, and cgForce?

I am reading this:"Use Load Group and Constraint Group to collect conditions that will be enabled in different studies. Define a group in Global Definitions and assign its content directly from the load or constraint itself. Define load cases in the Study Extensions of a Study Type and enable active load and constraint groups; see Figure 4, where lg denotes a load group and cg denotes a constraint group. Weight is used as a multiplication factor for the corresponding load group." But I still don't quite understand. What's the use of it?

Could anyone explain it to me? Thank you very much!
1 Reply Last Post Aug 2, 2012, 2:05 p.m. EDT
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 1 decade ago Aug 2, 2012, 2:05 p.m. EDT
Hi

load and constraints groups are ways to group different loads and BC's to access them by "groups". Specially for complex multi-study cases. In v4.3 you can also manually select which BC settings you want to enable or disable.

This is rather an advanced feature, if you are starting, and use only one study case, then skip these features, then read carefulyl the doc a few times and use them gradually start with simple cases

--
Good luck
Ivar
Hi load and constraints groups are ways to group different loads and BC's to access them by "groups". Specially for complex multi-study cases. In v4.3 you can also manually select which BC settings you want to enable or disable. This is rather an advanced feature, if you are starting, and use only one study case, then skip these features, then read carefulyl the doc a few times and use them gradually start with simple cases -- Good luck Ivar

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