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Integrated BIM tools, including Revit, AutoCAD, and Civil 3D
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Transcript
00:01
Static stress simulation.
00:04
After completing this lecture, you'll be able to
00:07
understand static stress simulation and fusion
00:09
describe the workflow for setting up and solving a static stress simulation
00:13
and identify aspects of simulation results.
00:17
First, we need to answer the question. What is static stress simulation
00:22
simulation in general is a computational process used to analyze how
00:26
a design will perform when loads are placed on it.
00:28
Linear static stress simulation is specifically looking
00:32
at material behaviors in their linear range.
00:34
Before plastic deformation occurs.
00:37
Linear static stress is a specific type of simulation where
00:41
the design is assumed to return to its original shape.
00:44
The loads don't change direction or magnitude
00:46
and the deformation and strain are small.
00:50
When we think about static stress simulation,
00:52
we need to first identify the workflow and the key steps in that process.
00:56
First,
00:57
we need to prepare a design for
00:58
simulation by removing unwanted details and components.
01:02
Next, we define global simulation parameters for things like mesh elements.
01:06
We add constraints to define how a design is free to move
01:10
loads, to define forces that act on the design,
01:13
define the material or physical properties.
01:15
Then we solve the simulation study and review the results.
01:19
After review,
01:20
we can refine the design or the simulation parameters and repeat the process again.
01:26
When we're preparing for a simulation,
01:28
we have to think about features that are not
01:30
critical production designs often have many small features like
01:34
small champers and filets or even additional geometry that
01:37
just simply is not important to a simulation study.
01:40
We use the contextual simplify workspace to prepare a model for simulation.
01:44
We do this by removing those small features and
01:47
non-essential bodies or components. And we add details that we want to validate
01:51
changes to a design in the simplified workspace.
01:54
Don't affect the design back in the design workspace.
01:58
The simulation setup has several studies that don't require changes but
02:02
oftentimes making an adjustment can help improve the simulation results.
02:06
Studying settings include general settings such as removing rigid body modes as
02:11
well as specific settings for how a body is converted to a mesh
02:15
meshing is done automatically during a solve.
02:17
But it can also be done beforehand to help refine mesh elements.
02:21
A simulation study will look at the transfer
02:23
of stress across mesh elements in a design
02:27
simulation constraints are used to represent boundary conditions. For a design
02:32
constraints include fixed to prevent movement in selected directions,
02:36
frictionless,
02:36
to prevent movement in the direction normal to a surface pin to prevent movement,
02:41
radial axially or in a tangential direction.
02:44
This is only applicable to cylindrical surfaces. A
02:47
prescribed displacement which prevents movement in
02:50
the selected directions similar to fixed,
02:52
except that the entities are held at a displacement position
02:56
and a remote constraint which prevents movement
02:58
in the selected direction similar to fixed,
03:00
except that the constraint is located at a remote location.
03:05
Simulation loads are energy force or pressure that
03:08
is applied to an object during normal operation.
03:10
And it includes force which is a force to change
03:13
the state or direction and motion of a body.
03:16
A
03:16
pressure which is a force per unit area
03:19
moment, which is a twisting load that simulates the effects of torque,
03:22
a bearing load which simulates the effects
03:25
of cylindrical bodies pushing on one another
03:28
remote force,
03:29
which applies a point load to simulate the effects of a
03:31
force from a point in space that is not on the model
03:34
hydrostatic pressure,
03:36
which is looking at a pressure load to simulate
03:38
pressure increasing with fluid depth as a linearly varying pressure
03:43
and remote moment,
03:44
which applies a twisting load from a remote location
03:47
to simulate the effects of torque on a model
03:50
materials contacts and degrees of freedom.
03:54
When selecting a material,
03:55
this is gonna represent the physical properties of a design.
03:58
The material can be study based or come
04:00
directly from the design and the design workspace
04:03
and contexts are created when multiple bodies in a design are used,
04:07
contacts will define how each of these bodies interacts with one another.
04:11
If they're bonded together as one or if they're free to pull apart for example,
04:16
degrees of freedom or do
04:17
f
04:18
determine if your simulation study has all applicable constraints,
04:22
partially fixed or free models may exhibit undesirable results.
04:27
Simulation results will be organized based on load cases and result type.
04:31
Users can identify areas of high stress
04:33
concentration and potential failure in a design
04:37
results.
04:37
Comparisons allow users to review multiple studies
04:40
or load cases to compare the results
04:43
and simulation results enabled designers and engineers to make
04:46
informed design decisions before production and physical testing.
04:50
In conclusion,
04:51
linear static stress simulation looks at fixed loads and material behavior in
04:55
the linear range where it will return to its original shape.
04:58
Simulation models can be simplified versions to help speed up calculations
05:02
and omit small details that are not critical to the design
05:05
simulation results are one piece of the design puzzle,
05:08
providing information to help designers
05:10
and engineers make informed design decisions
05:13
and simulation results should be used as a tool and not
05:16
a replacement for physical testing and validation of a final concept.
Video transcript
00:01
Static stress simulation.
00:04
After completing this lecture, you'll be able to
00:07
understand static stress simulation and fusion
00:09
describe the workflow for setting up and solving a static stress simulation
00:13
and identify aspects of simulation results.
00:17
First, we need to answer the question. What is static stress simulation
00:22
simulation in general is a computational process used to analyze how
00:26
a design will perform when loads are placed on it.
00:28
Linear static stress simulation is specifically looking
00:32
at material behaviors in their linear range.
00:34
Before plastic deformation occurs.
00:37
Linear static stress is a specific type of simulation where
00:41
the design is assumed to return to its original shape.
00:44
The loads don't change direction or magnitude
00:46
and the deformation and strain are small.
00:50
When we think about static stress simulation,
00:52
we need to first identify the workflow and the key steps in that process.
00:56
First,
00:57
we need to prepare a design for
00:58
simulation by removing unwanted details and components.
01:02
Next, we define global simulation parameters for things like mesh elements.
01:06
We add constraints to define how a design is free to move
01:10
loads, to define forces that act on the design,
01:13
define the material or physical properties.
01:15
Then we solve the simulation study and review the results.
01:19
After review,
01:20
we can refine the design or the simulation parameters and repeat the process again.
01:26
When we're preparing for a simulation,
01:28
we have to think about features that are not
01:30
critical production designs often have many small features like
01:34
small champers and filets or even additional geometry that
01:37
just simply is not important to a simulation study.
01:40
We use the contextual simplify workspace to prepare a model for simulation.
01:44
We do this by removing those small features and
01:47
non-essential bodies or components. And we add details that we want to validate
01:51
changes to a design in the simplified workspace.
01:54
Don't affect the design back in the design workspace.
01:58
The simulation setup has several studies that don't require changes but
02:02
oftentimes making an adjustment can help improve the simulation results.
02:06
Studying settings include general settings such as removing rigid body modes as
02:11
well as specific settings for how a body is converted to a mesh
02:15
meshing is done automatically during a solve.
02:17
But it can also be done beforehand to help refine mesh elements.
02:21
A simulation study will look at the transfer
02:23
of stress across mesh elements in a design
02:27
simulation constraints are used to represent boundary conditions. For a design
02:32
constraints include fixed to prevent movement in selected directions,
02:36
frictionless,
02:36
to prevent movement in the direction normal to a surface pin to prevent movement,
02:41
radial axially or in a tangential direction.
02:44
This is only applicable to cylindrical surfaces. A
02:47
prescribed displacement which prevents movement in
02:50
the selected directions similar to fixed,
02:52
except that the entities are held at a displacement position
02:56
and a remote constraint which prevents movement
02:58
in the selected direction similar to fixed,
03:00
except that the constraint is located at a remote location.
03:05
Simulation loads are energy force or pressure that
03:08
is applied to an object during normal operation.
03:10
And it includes force which is a force to change
03:13
the state or direction and motion of a body.
03:16
A
03:16
pressure which is a force per unit area
03:19
moment, which is a twisting load that simulates the effects of torque,
03:22
a bearing load which simulates the effects
03:25
of cylindrical bodies pushing on one another
03:28
remote force,
03:29
which applies a point load to simulate the effects of a
03:31
force from a point in space that is not on the model
03:34
hydrostatic pressure,
03:36
which is looking at a pressure load to simulate
03:38
pressure increasing with fluid depth as a linearly varying pressure
03:43
and remote moment,
03:44
which applies a twisting load from a remote location
03:47
to simulate the effects of torque on a model
03:50
materials contacts and degrees of freedom.
03:54
When selecting a material,
03:55
this is gonna represent the physical properties of a design.
03:58
The material can be study based or come
04:00
directly from the design and the design workspace
04:03
and contexts are created when multiple bodies in a design are used,
04:07
contacts will define how each of these bodies interacts with one another.
04:11
If they're bonded together as one or if they're free to pull apart for example,
04:16
degrees of freedom or do
04:17
f
04:18
determine if your simulation study has all applicable constraints,
04:22
partially fixed or free models may exhibit undesirable results.
04:27
Simulation results will be organized based on load cases and result type.
04:31
Users can identify areas of high stress
04:33
concentration and potential failure in a design
04:37
results.
04:37
Comparisons allow users to review multiple studies
04:40
or load cases to compare the results
04:43
and simulation results enabled designers and engineers to make
04:46
informed design decisions before production and physical testing.
04:50
In conclusion,
04:51
linear static stress simulation looks at fixed loads and material behavior in
04:55
the linear range where it will return to its original shape.
04:58
Simulation models can be simplified versions to help speed up calculations
05:02
and omit small details that are not critical to the design
05:05
simulation results are one piece of the design puzzle,
05:08
providing information to help designers
05:10
and engineers make informed design decisions
05:13
and simulation results should be used as a tool and not
05:16
a replacement for physical testing and validation of a final concept.
After completing this video, you’ll be able to:
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