When you want to use the connection properties of the
Generative Assembly Structural Analysis product, you first need to
define a connection that the connection property will reference.
The connections can be created in different ways:
- in a product context:
- Assembly Constraints in the Assembly Design workbench
- Welding Joints in the Automotive Body in White Fastening
workbench
- Joint Connections in the the Ship Structure Detail Design
workbench (Manual Connection command)
- Analysis Connections created before V5R12
![](../icons_C2/common/awarning.gif) |
The former Analysis Connections are still
maintained but:
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- in an analysis context:
![](images/connectpropNLS.gif)
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Why you will use Connections of the Analysis Workbench?
In some cases, constraints are not sufficient to modelize
connections from an Analysis viewpoint:
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In order to support properties, users often need to
define too many constraints using the Assembly Design workbench,
leading to over-constrained models that cannot be updated.
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It is impossible to define constraints that are not
positioning constraints but connection constraints.
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It is impossible to select several geometries to
define connections in a product context.
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It is impossible to select a mechanical feature to
define connections in a product context.
In order to meet these different needs, a new Analysis
Connection toolbar was added to the Generative Assembly Structural
Analysis product of the Generative Structural Analysis workbench.
This toolbar lets you create all these connections dedicated to analysis
modeling. |
What Type of Hypotheses are Used for Analysis?
You will find here below three types of hypotheses used
when working in Analysis workbench.
- Small displacement (translation and rotation)
- Small strain
- Linear constitutive law: linear elasticity
For static case solutions, one can say that:
- If there is no contact feature (either virtual or real), no pressure
fitting property and no bolt tightening (being virtual or not) feature,
then the problem is linear, that is to say, the displacement is a
linear function of the load.
- In other cases, the problem is non linear, that is to say, the
displacement is a non linear function of the load.
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- Spot Welding Connection Property:
- Point Analysis Connection defined in the
Generative Structural Analysis workbench (from V5R12)
- Point Analysis Connection within one Part defined in the
Generative Structural Analysis workbench (from V5R12)
- Joint Body containing at least a (point) Joint
Element and defined in the Body in White Fastener workbench
- Seam Welding Connection Property:
- Line Analysis Connection defined in the Generative
Structural Analysis workbench (from V5R12)
- Line Analysis Connection within one Part defined in the
Generative Structural Analysis workbench (from V5R12)
- Joint Body containing at least a (line) Joint
Element and defined in the Body in White Fastener workbench
- Surface Welding Connection Property:
- Surface Analysis Connection defined in the
Generative Structural Analysis workbench
- Surface Analysis Connection within one Part defined in
the Generative Structural Analysis workbench
Other Connection Properties
When you define a connection property, you can select as
support:
- General Analysis Connection of the Generative
Structural Analysis workbench (from V5R12)
- Assembly Constraints (Contact Constraint, Coincidence
Constraint or Offset Constraint) of the Assembly
Design workbench
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General Analysis Connection (from
V5R12)
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Assembly Constraints
By default, you can select any assembly constraints as
Connection Property support. |
Former General Analysis Connections and Face Face Analysis Connections
(before V5R12)
![](../icons_C2/common/awarning.gif) |
You cannot select these connections as Connection
Properties support any longer.
It is strongly recommended to migrate the Analysis Connections created
before V5R12.
To do this, refer to Checking the Model. |
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![](../icons_C2/common/tips.gif) |
Here you will find precisions and restrictions for
certain connection properties.
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Slider: Slider Connection Property
- The slider direction is defined according to the geometry
on which the joins are landed.
![](../icons_C2/common/ainfo.gif) |
If you select a former Face Face Analysis
Connection (before V5R12) as support, the slider directions
are automatically parallel or coaxial. |
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Contact:
Contact Connection Property, User-Defined Distant
Connection Property (if you select Contact as
Start or End option).
It will be possible to select connections connecting:
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Pressure Fitting: Pressure Fitting
Connection Property
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Bolt: Bolt
Tightening Connection Property, Virtual Bolt
Tightening Connection Property, Virtual Spring Bolt
Tightening Connection Property, User-Defined Distant
Connection Property (if you select Bolt as
Middle option)
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On each side of the assembly, multi-selection
of geometry is available.
In this case, if a geometry has a revolution axis, the other
geometries (belonging to the same side of the assembly) must
have a revolution axis that must be the same.
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Moreover, if the two sides have a revolution
axis (tightening direction), this axis must be the same.
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You can define a bolt connection property (and
also virtual bolt tightening, virtual spring bolt tightening
and user-defined connection properties) even if the connection
is defined between two points.
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User-Defined: User-Defined Distant
Connection Property
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Refer to Contact.
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Refer to Bolt.
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Face Face Connection Properties:
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Some Face Face and Distant Connection Properties
are authorized in the assembled analysis if you apply them to a
general analysis connection built
with groups as support.
To know which connection property you can apply to a general
analysis connection with groups as support, refer to
About Analysis Assembly.
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