Speaker 1: We have already shown
some of the simulation
enhancements for 2021 on the
main stage. But now I'll go into
some of these in more detail
while also covering other
improvements new to 2021. The
enhancements are aimed at
improving performance and
accuracy whilst also
streamlining the process to give
users the greatest chance of a
successful simulation first
time. To validate a how this
corner mount assembly will
perform fixtures and loads are
created to reduce the
calculation requirements. The
hardware components are set to
use the draft quality mesh by
meshing components. It can be
difficult to capture the exact
curvature of curved surfaces,
especially when using a corse or
draft quality mesh. With
SOLIDWORKS simulation 2021. The
software automatically
calculates geometry correction
terms to improve the
representation of cylindrical,
spherical and conical surfaces,
the geometry correction results
in more accurate simulation
results for these curved
surfaces, we will use the
blended curvature based measure,
which now benefits from
multi-core processing for
simulation professional and
premium users. And can now also
be specified as the default
measure within the simulation
options. If desired the model
takes around 12 seconds to mesh,
which we will compare to 2020
shortly, the default solver
choice has also been optimized
to select the best solver based
on the number of equations load
cases, mesh type geometric
features, contact and connector
features as well as available
system memory. Improvements have
been made to many of the solvers
to give faster and more accurate
results.
For example, the Intel direct
file solver can now handle
linear, static and nonlinear
studies with more than 4 million
equations and for simulation
professional and premium users,
the FFE plus iterative solvers
improved by using parallel
multi-core processing to
calculate stiffness for surface
to surface contact elements,
solution time is faster and most
apparent for large models and
many contact elements. These
results look good. Experienced
users will recognize the
terminology updates throughout,
which makes solid works
simulation more consistent with
conventional industry
terminology. Contacts generally
are now refer to as
interactions, no penetration
contact is known as contact and
allow penetration is simply
known as free. These changes
follow through to other tools
such as the interaction viewer,
which was formerly known as the
contact visualization plot. New
default properties for bonded
interactions, specify gap
regions to automatically make
your simulation more robust,
even with slightly imperfect
geometries. For example, with
this new property clearances
between the bolts nuts and
plates are automatically
recognized and treated, saving
you from inaccurate results in
time spent troubleshooting the
study. In SOLIDWORKS Simulation
2020 independent meshes with
generated by default to make it
easier and faster to mess large
and complex assemblies in 2021
further changes have been made
to improve the accuracy of the
bonded formulation within static
frequency and buckling studies
to understand any gaps or small
interferences between
independent meshes, even though
the actual geometry is have no
clearances. The typical example
is when using shallow elements,
the gap is
due to shell thickness to check
the quality of the mesh a new
diagnostics tool is available.
The mesh is actually very good
quality, so we will have to
reduce the ratio to display
anything. The worst elements are
now automatically isolated,
making them quick and easier to
find. And the mesh helper can
also be used to automate the
mesh refinement if necessary.
Switching back to 2020, using
the same measure, took nearly a
minute longer than 2021. Also
whilst it could easily be
resolved. The default settings
have not picked up on the
clearance on the bolt. Allowing
it to pass freely through the
bracket. Looking at another
example, we can see that these
two components start off with a
small gap between them. We would
always recommend closing this
gap before applying the load as
otherwise. We may get
unpredictable results as we have
here. Back in 2021, We now have
some default interaction
settings, which will help us
overcome the situation. The
first setting caters for small
gaps when using bonded
interaction, which you saw in
the previous example, the next
settings were considered contact
for elements within 10% of the
overall model size, where
previously we would have had to
create local interactions
between pairs of entities. This
next option helps stabilize
small gaps when using contact.
So now we could simply switch
the global interaction to
contact and the default values
will identify faces within a set
distance to consider contact and
also a
place stabilization to help
resolve areas which start with a
small gap. We can see the area
that has been detected using the
interaction viewer, which
combined with the context
stabilization gives us a fast,
simple and accurate solution. Of
course it is still possible to
define local interaction
specifications, which also take
advantage of context
stabilization and gap range
specifications. Here you will
notice additional terminology
changes for contact offset,
which was formerly known as gap
clearance and the new ability to
swap source and target assess
with the click of a button.
Moving on to some of the other
improvements. The simulation
evaluator is enhanced to flag
study definitions related to
friction coefficient is greater
than 0.2 warning users of
possible convergence issues.
It's also flags materials with
invalid persons ratios larger
than 0.5 for linear static
studies listing thing, connect
to loads at pin joints is more
accurate for sheer forces and
bending moments. Now that that
directional vector is defined at
each joint individually.
SOLIDWORKS Simulation 2021
enhancements demonstrate
real-world user benefits, making
it easier and faster than ever
for solid works users to get
accurate simulation results.