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发表于 2017-1-8 17:13:47
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What's New in Abaqus 2017
Product simulation is often performed today by engineering groups using niche simulation tools from different vendors to simulate various design attributes. The use of multiple vendor software products creates inefficiencies and increases costs. SIMULIA delivers a scalable suite of unified analysis products that allow all users, regardless of their simulation expertise or domain focus, to collaborate and seamlessly share simulation data and approved methods without loss of information fidelity.
The Abaqus Unified FEA product suite offers powerful and complete solutions for both routine and sophisticated engineering problems covering a vast spectrum of industrial applications. For example, in the automotive industry engineering work groups can consider full vehicle loads, dynamic vibration, multibody systems, impact/crash, nonlinear static, thermal coupling, and acoustic-structural coupling using a common model data structure and integrated solver technology. Best-in-class companies are taking advantage of Abaqus Unified FEA to consolidate their processes and tools, reduce costs and inefficiencies, and gain a competitive advantage.
Abaqus 2017 - Unified FEA Products
Abaqus/CAE
Abaqus/Standard
Abaqus/Explicit
Enhancement Summary
Enhanced Contact and Constraints
XFEM Contact Improvements for Abaqus/Standard
Advances in LCP (Linear Complimentary Problem) Equation Solver for Abaqus/Standard
CZone Enhancements for Abaqus/Explicit
Enhanced Materials and Elements
Development for Welding and Additive Manufacturing (AM)
Event Series
Usability
Other Key Enhancements
Enhanced Contact and Constraints
Fast linear contact
Improved convergence behavior
New edge-to-surface general contact in Abaqus/Standard
Provides improved robustness/accuracy for assemblies in contact
New edge-to-surface contact with thick beams as “master”
Beams and truss edges can act as “master” in the edge-to-surface formulation
Cohesive behavior can now be used with general contact in Abaqus/Standard
Full GUI support for Abaqus/CAE
cohesive behavior was previously supported in context of contact pairs in /Standard and general contact in /Explicit
Much faster to model cohesive behavior no longer needs to be defined in pairs
Benefit from general contact robustness with performance and convergence
XFEM Contact Improvements for Abaqus/Standard
Improved accuracy for XFEM for crack initiation and growth
XFEM surface can participate in surface-to-surface and edge-to-surface formulations of general contact
Internal surface energy topology data used in general contact tracking and constraint formulation continuously updates as crack surface evolves
Improved contour integral for XFEM cracks (Covered above – merge sections)
Conforming mesh improvements
Elements surrounding the crack line are cubes instead of long cuboids
Default enrichment radius can be used
Advances in LCP (Linear Complimentary Problem) Equation Solver for Abaqus/Standard
Common for surfaces to be in contact – no sliding
May be the worst case scenario
Using linear contact and linear geometry, small displacements
Faster contact, can get order of magnitude improvement
Other sources of nonlinearity (material and geometric) are “frozen” in the “base state” of the perturbation step
CZone Enhancements for Abaqus/Explicit
Implemented within general contact algorithm
Used for modeling brittle failure of shell composites upon impact
Previously available only through contact pairs
Increased performance, ease of modeling
Allows contact front to pass through surface to capture crushing behavior rather than deleting the element
Avoid multiple impacts to more accurately model continuous crushing
The general contact CZone capability is documented within Abaqus 2017 documentation
Enhanced Materials and Elements
New brick shell element (CSS8) for Abaqus/Standard
Beneficial for thin walled structures modeled in 3D CAD
Well-suited for composite solids and 3D material models
Solid element with superior bending behavior about the local 1-2 plane
Element progressive activation (EPA)
EPA activates elements in each increment of analysis
Supported with heat transfer and static properties
Solid elements in Abaqus/Standard only
Can activate elements through space and time
Efficiently simulate manufacturing processes
Order of magnitude more computationally efficient
Traditionally the BCs are applied to the model –
now the BCs are added with the material as part of the solution
Development for Welding and Additive Manufacturing (AM)
New free surface film (FFS) and radiation (RFS) capabilities
Automatically applies film and radiation surface loadings to free surfaces
Nonuniform heat fluxes in 3D heat transfer
New functionality to easily access model data from user subroutines
Property tables, parameter tables, table collections, event series
Free surface film and radiation
Free surface convection (FFS)
Automatically applies film loadings to free surfaces
Free surface radiation (RFS)
Automatically applies radiation loadings to free surfaces
Supports both model change and element progressive activation
Event Series
New interface allows user to define floating point data as a function of position and time
Rather than amplitude curve (something vs time)… event series uses something vs SPACE AND TIME
Usability
Independent datum features
Import parts from input file
Surface normal query tools
Show working directory in toolbar
Expanded object copy between models
Discrete/analytical fields
Model instances
Other Key Enhancements
Improved direct sparse scalability
Explicit dynamic scalability to 1000 cores
GPU acceleration of AMS eigensolver
New material models
Mean field homogenization
Abaqus-SIMPACK integration
Table input for user subroutines
Progress element activation |
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