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LMS Virtual.Lab Structures
Multi-Solver FEA Modeling & Analysis
Through its seamless integration with Dassault Systèmes CATIA V5 and the open SIMULIA platform, LMS Virtual.Lab Structures offers a fully integrated or stand-alone pre- and post processing environment for linear, non-linear and crash analysis. It covers component, subsystem and full vehicle modeling and assembly in all stages of the development cycle, from concept through detailed engineering. These capabilities allow design and engineering teams to conveniently analyze the characteristics and behavior of components and assemblies within the same environment, with the possibility of remaining fully associative with the original CAD models. The use of such a common toolset eliminates the need for time-consuming and error-prone file conversions and data translations, thereby increasing engineering productivity, improving the quality and consistency of analysis results, and accelerating engineering iterations.
The complete process in a single environment
LMS Virtual.Lab Structures offers a fully integrated and scalable environment for finite element analysis and integrates the various process steps and simulation tools that would otherwise run separately and produce isolated results. This integration eliminates the need to rework models, duplicate meshes, transfer files, translate data, and visualize results in application-specific formats.
Thanks to seamless integration with Dassault Systèmes’ CATIA V5, LMS Virtual.Lab Structures eliminates the need to translate the original geometry to an intermediate meshable geometry format. With integrated drivers for industry-standard solvers, such as Nastran (MD, MSC, NX, NEi), Abaqus, LSDyna and Radioss, the hassle is taken out of setting-up and monitoring solver jobs. Flawless and quick analysis is ensured. This integrated design and simulation environment provides a consistent product development process throughout the entire organization. Teamwork is improved by facilitating collaboration and data exchange between separate groups in developing innovative designs that yield increased profitability and greater market share.
The flexibility to adopt geometry or mesh-based analysis
Users can run a full geometry-based analysis process, follow a mesh-based approach or combine both approaches. The first approach allows users to develop design alternatives using the original CAD geometry, benefiting from complete geometry associativity throughout the simulation process. The meshbased approach lets users directly modify existing meshes and finite element models in associative or non-associative ways to flexibly analyze design alternatives before modifying the original CAD design. Both approaches support a specificationdriven, history-based simulation process where all steps are interconnected. Any change in one of the geometry, mesh or analysis parameters automatically ripples through the complete analysis process and readily produces new analysis results. Although LMS Virtual.Lab Structures seamlessly integrates with CATIA V5, it can operate as a stand-alone solution and does not require a CATIA V5 installation on the user’s PC. Alternatively, LMS Virtual.Lab Designer Structures is entirely integrated as an add-on to CATIA V5 FEA solutions and offers FE pre- and post-processing capabilities and drivers to industry-standard solvers within the CATIA V5 environment.
Simulation-driven design
LMS Virtual.Lab Structures moves companies towards simulation-based product development, where up-front analysis guides engineers toward optimal design performance early in the cycle. These users can easily run what-if scenarios to quickly evaluate design alternatives and enhance creativity. A scalable environment enables the designers to simulate component or sub-system performance in a familiar user interface, using pre-defined analysis templates. LMS Virtual. Lab Structures also offers dedicated technology for building full-level simulation models to study complete vehicle performance in the concept phase. This produces earlyprocess design directives for better overall simulation quality and a shorter development cycle.
• Scalable solution for component, multi-component, sub-system and full vehicle analysis
• Provides integrated drivers for finite element solvers for linear, non-linear and crash analysis
• Increases simulation consistency with shared working environments
• Speeds up engineering iterations with template-based and associative analysis
• Captures analysis history and specifications in standardized templates
• Enables frontloading critical engineering decisions
• Leverages CATIA V5’s familiar user environment
Seamless integration for accelerated simulation
LMS Virtual.Lab Structures’ powerful meshing solution combines basic and advanced meshing functionality with geometry healing in one single package. Meshing engines can automatically handle complex wireframe, surface and solid geometry while remaining associative with the design at all times. Any modification is automatically reflected in the mesh.
LMS Virtual.Lab Structures also contains interfaces for different CAD formats and a set of native geometry modules, to implement specific design changes or correct certain issues. Equally effective is the software’s ability to transform meshed parts by rotation, translation or symmetry or capture existing meshes to create new ones. During the mesh creation process, designers and engineers can rely on efficient mesh quality analysis tools, which excel in customization and visualization.
In addition to automatic meshing solutions, LMS Virtual.Lab Structures also provides manual associative or non-associative node and element creators, extrusion or mapped meshing functionality, and mesh editing features, such as dragging or moving nodes, translating meshes or groups, and splitting elements.
Multi-solver model pre-processing
LMS Virtual.Lab Structures offers an extensive set of geometry and mesh-based pre-processing functionality. A wide range of generic and solver specific nodes, elements, axis systems, properties, materials and connections are available which can all be defined based on mesh supports and/or geometry supports. To improve the integration between the different simulation disciplines, many of these features support a multiple solver concept, meaning that one feature will capture both the general and the additionally defined solver specific
characteristics. This is very powerfull as simulation models can be easier translated from one discipline/solver (e.g. crash) to another one (e.g. NVH).
LMS Virtual.Lab Structures provides generic and solver specific model verification and repair tools, like penetration and intersection checking, mesh-quality checking versus company standards, node and element numbering, free nodes, free edges, smallest elements, and Nastran rigid element dependency conflicts.
Integrated solver driving
LMS Virtual.Lab Structures offers integrated drivers for industrystandard solvers to set up, launch and post-process a variety of solutions including static, modal, buckling, transient, harmonic and thermal analyses. Various loads, boundary conditions, contacts, initial conditions and output requests can be defined on the mesh and/or the geometry. Users can set up associative analyses with external solvers to take advantage of a specialized solver technology and leverage multiple solver investments. Ease of use allows novice users to treat the external solver as a virtual black box, but the system also provides all the advanced driver control that an experienced analyst would need.
Although LMS Virtual.Lab Structures supports fully integrated FEA simulation, it also acts as an intelligent gateway to the outside world. Through the interface, meshes (including those created within Dassault Systèmes analysis tools), groups, loads, restraints and connections can be exported to various formats, such as Nastran, and LS-DYNA. Similarly, orphan meshes, analysis set-up parameters and a wide variety of results can be imported from outside sources.
Comprehensive post-processing
Comprehensive post-processing lets users query and visualize results including solver-specific output in several formats, such as color-coded contours showing high-stress and strain concentrations, hot spots, 2D curves synchronized with 3D animations, bar chart displays, deformation, and animated displacements. LMS Virtual.Lab can also export selected results for reporting or further analysis. If the analysis indicates excessive deformation or stress, the CAD model can be changed, the mesh modified and the part re-analyzed until satisfactory performance is achieved – all within the same simulation environment.
System assembly and modeling
With LMS Virtual.Lab Structures users can quickly build an attribute-specific sub-system or system-level simulation model for aerospace, automotive, ground vehicle or other industries. Model performance can be analyzed by a variety of solvers, such as Nastran, Abaqus, LS-DYNA and RADIOSS. These models can be further analyzed and post-processed for different attributions in other LMS Virtual.Lab modules, like LMS Virtual.Lab Noise and Vibration or LMS Virtual.Lab Durability.
The assembly can start from attribute-independent geometry components or wireframe models with defined assembly hard points and associated attribute-specific meshes or component-analysis documents. This enables concurrent engineering and leveraging of common parts. Once the assembly layout is defined, engineers can apply attributeindependent connections directly to the geometry and/or the mesh to model kinematic joints, bolts, springs, spot welds, hinges, seam welds, glue, sealing and other connections. Users can simply access a vast library of attribute and solver-specific modeling representations to rapidly create the most accurate simulation model possible. For instance for spot welds, different modeling representations are available for strength, durability, dynamics, noise and vibration simulation and crash analysis. Since the entire LMS.Virtual.Lab Structures assembly solution is integrated and associative, it enables quick and efficient assembly and connection modeling and even quicker variant analysis and modification.
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 Download the LMS Virtual.Lab Structures Brochure
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