LMS Virtual.Lab Motion Desktop

Transcription

1 Answers for industry LMS Virtual.Lab Motion Desktop [VL-MOT.80.1] 13.1 Benefits Gain insight in the kinematic and dynamic performance of a mechanism Increase product quality by efficient full system optimization Enables hybrid engineering through easy access and usage of experimental data in the multi-body simulation Software architecture is very open to CAD, other CAE solvers Gain productivity through unique automation and parameterization capabilities Summary The LMS Virtual.Lab TM Motion Desktop provides the multi-body pre- / postprocessing capabilities necessary to simulate any mechanical or mechatronic system. Through its link with CAD capabilities, its extensive parameterization and automation capabilities, and the multidisciplinary LMS Virtual.Lab environment, it provides a unique environment to efficiently optimize a complete mechatronic system for its functional performances (kinematic and dynamic behaviour, fatigue life, acoustics, noise and vibration). The LMS Virtual.Lab Motion Desktop allows creating a multibody dynamic model, applying constraints and loads coming from any source (e.g. experimentally measured loads) and animate, plot and compare the simulation results. For the solver features, look at the VL.MOT.33.2 LMS Virtual.Lab Motion Solver Product Information Sheet, which elaborates on basic solver and recursive, corner, interactive solvers, plus design sensitivity analysis, user-defined subroutine, coupled and co simulations, etc. Capabilities Model creation Geometry creation Wireframe, surface, or solid features for each body Sketcher available to create detailed part geometry Photo-realistic material library Features Multi-disciplinary environment: Automatic transfer of calculated loads to LMS Virtual.Lab Durability Conversion of multibody model to FEassembly, e.g. for noise & vibration study Modular modeling approach (submechanisms)

2 Features continued Efficient post-processing Easy debugging and comparison of models through ASCII report of mechanism Easy navigation through and edition of the model via the feature browser Upgrade of models displaying actions taken, and status (successful, warning) Streamline corporate knowhow and standards through built-in knowledge based engineering Dress up features like chamfers, screw threads Patterns, mirroring, scaling Realistic surface modelling Geometry import Import many other popular CAD formats (see Product Configuration Sheet) Bodies Mass and inertia properties automatically calculated from solid geometry or defined by user Automatic creation of complete set of bodies from a CATIA product Easily apply initial conditions to any body (absolute or relative) Import of ADAMS.adm files Mechanism Assembly Automatic assembly of bodies by creating kinematic joint constraints Easy creation, edition and visualization of axis systems during the creation of joints, constraints and forces Ability to check mechanism assembly by exercising bodies according to joints, without the need to run the solver. Changes made to parts are reflected automatically in the multi-body model Support of CATIA publications allowing to replace CAD components without braking the multi-body model. Conversion of multi-body model to NVM model (FE-assembly) Modular modelling approach Sub-mechanisms can be defined and treated as a distinct entities Model can contain any number of submechanisms. Motion Publications can be used to define bodies (rigid or flexible) or motion axis systems which are common between different submechanisms. Open several panels at one time allows viewing existence and parameters of other elements Joints Joint types include: standard joints: revolute, cylindrical, bracket, spherical, translational, screw, gear, planar, CV, universal Compound joints: sphericalspherical, revolute-revolute, revolute-cylindrical, revolute-spherical, revolute-translational. Curve and surface joints: pointcurve, point-surface, slide-curve, roll-curve Joints will snap bodies together Constraint Elements Standard constraint types include: difference, distance, point, position, orientation, dot1, dot2. Time-varying constraints (at position, velocity and acceleration levels): joint, relative, one-body, two-body Two-body, three-body and four-body relative constraint Both discontinuous and continuous speed-sweep constraint for run-up analysis. Force Elements Standard force elements: Spring damper (translational, rotational), beam, three-point force, friction, shock absorber, expression force, userdefined force. Spline beam for largely deforming structures like an anti-roll bar. The Multi-beam representation of a body, is automatically setup trough the support of CATIA beam meshes. The body is substructured and post-process is available on each element.

3 Bushing forces: including stiffness, damping, pre-load and frequency dependence for standard bushing (6 dof), radial bushing and spherical bushing. Bushing link, hydrodynamic bushing also are available. Bump stop contact force element defined using similar definition as a bushing. Tires: TNO Delft-Tyre (MF-TIRE and MF- SWIFT), simple tire, LMS CDTire, Standard Tire Interface. Contact force types: point-to-point, sphere-to-extruded-surface, sphere-torevolved-surface, extruded-torevolved-surface, revolved-to-revolved, sphere-to-rail, sphere-to-ground CAD contact based on tessellation of the surface (RAPID search engine) is much faster than before to setup and to run. Tesselation controlled by sag, length and angle. Flexible contact (rigid-to-flex or flex-toflex), Gear contact (Cai/ISO formulations) Aero- and hydrodynamic local forces (no pressure) Mathematical Expressions Useful for drivers, force elements, geometries. Simplified formulation by predefined variables. Sensors Force sensors sum the force and torque quantities at a specific location for reporting Kinematic sensors report position, velocity and acceleration for a point of interest. User-defined Subroutines Allows to customize all common elements of the mult-body model, such as forces, drivers, control elements User-defined routines are written in Fortran (contact your local support or see on-line help for more details on versions and compilers supported) Curves Easier spline curve editing for driver- or force elements. Import of ASCII or MS Excel files Explicit or implicit curve definition. Parametrization/Automation All model parameters can be parameterized For ease-of-use, all parameters can be grouped in MS Excel or ASCII files Automatic synchronization between parameters and changes to MS Excel or ASCII files. Visual Basic macro recording and reply to automate all user interactions Mathematical formulas for or between parameters Built-in knowledgeware: corporate know-how can be embedded through formulas, rules and checks. Management of multiple design variants in one simulation model Analysis cases associative with CATIA V5 Knowledgeware design tables Feature browser allows fast visualization and edition of any Motion element. Inserting external data for force/constraint elements Different possibilities exist to import data that can be used to define the motion of the mechanism (e.g. as force versus time or as driving function) Curves See above

4 Time Series elements Time data in following file formats can directly be imported/exported and plotted: MTS RPCIII, ncode DAC, Universal Binary, EDAS, FAMOS) Load Function Set Loads can be read through a timehistory load function set, allowing to read an extensive range of time data formats: LMS Test.Lab files, LMS Motion Results files, Generic Time History files (supporting same file formats as the Time Series elements, see above), MS Excel files LMS Imagine.Lab Amesim Interface The tight integration of the LMS Amesim software allows you to parameterize, solve and post-process the LMS Amesim model directly from LMS Virtual.Lab Motion. Coupled simulation and co-simulation schemes are available to get faster results no matter the specificity of the model. LMS Amesim includes more than 3300 models from 29 libraries in the areas of Hydraulic & Pneumatic, Thermal, Energy, Mechanical, Engine, Electromechanical, Control, etc. This solution allows correctly simulating the complete mechatronics system to result in more accurate and more robust designs. Enables fully coupled non-linear mechanical system dynamics by combining 1D and 3D representations of the model components 3D models provide the description of the multibody model as well as values of position, velocity and acceleration of the bodies. 1D models provide the description of the actuators and controllers as well as values of output pressures and forces. Results for both Imagine.Lab and Virtual.Lab are created during the coupled simulation. A different reporting time step can be defined for LMS Amesim and LMS Virtual.Lab Motion. LMS Virtual.Lab can act as the master program to solve the full combined set of differential equations or both LMS Virtual.Lab Motion and LMS Amesim can solve their own equations allowing to fasten the computation time Seamless and easy integration of Amesim and Motion models Easy switch between coupled and cosimulation schemes LMS Amesim physical and text parameters can be driven from Motion and be part of a Design Table. LMS Amesim variables can be defined for post-process and optimization in LMS Virtual.Lab Basic input and output control elements required for interfacing both models are included in this product. Initial conditions are applied to the state variables after a stabilization run performed on the 1D and 3D models separately or on the combined model. Discontinuities detection in the controls or hydraulic state equations and automatically restart of the integration process. LMS Amesim solver supported with Linux Running Motion Solution Different possibilities exist for a user to setup, manage and execute motion simulations

5 Design Tables Allows the user to organize specific parameters in an excel spreadsheet for increase usability and parameter management. Configurations Configurations extend the use of the design table into creating a specific set of parameters and associating those to an Analysis Case. Solutions Manager Greater solution capability by taking further advantage of: Design Tables Configurations Multiple Analysis Cases Multi-node Batch Solver Multi-core workstations and laptops Runs users choice of configurations for any Analyses Cases Automated Post processing including Load Envelopes, Comparison Plots and more Can automatically run scripts to change attributes not covered by Design Tables Supports batch solving Reported Results Gives the user further control to what data is reported to the motion results file. Variables of interest can be selected instead of reporting all quantities Manages LMS Virtual.Lab Motion results file size. Visualization of Results Animation Trace bodies on the screen Synchronized graph cursor with animation for better engineering insight Create envelope of body motion Show geometry collision detection and intersection curve between penetrating bodies (+ separate report) both for rigid and flexible bodies. Spring deformation visualization Show result vectors Scaled (amplified) motion Rotate, pan, and zoom while animating Direct.avi creation Take any camera stand point Simultaneous animation of multiple views Deformation of flexible bodies within the complete mechanism Stress and displacement contours of flexible bodies Manage lighting, views, and part colours and textures Graphing View available results in tree format Directly plot from Motion feature tree Graph from a results file without loading the model Graph results in global or local reference frame Save template plots for multiple re-use and plot instantiations Curve export to ASCII or MS Excel format Plot definitions save with model Mathematical operations on results such as scaling, multiplying curves, differentiating, integrating, taking FFT, Display FFT results in amplitude/phase (Bode plot) Display 3D waterfall line diagram allowing to project on single rpm or single frequency space Display any 3D spline surface or road data in a 3D display Easy torsional vibration check between two selected sensor axis systems Polar plots, orbit plots Change line types, color, appearance

6 Display results in any unit Display X and Y cursors Multiple plot formats Legend Unit conversion on image Supported hardware platforms Windows: 1 GB of RAM is the minimum recommended amount of memory for all applications UNIX: 512 MB of RAM is the minimum recommended amount of memory for all applications. 1 GB of RAM is recommended when large meshes ( elements and more) are used Windows 2000 (min SP4)/ Windows XP Professional SP1 or SP2/Windows XP x64 Professional IBM Workstation with AIX 5.2 or 5.3 HP Workstation with HP-UX Version HP- UX SGI Workstation with IRIX m Sun Workstation Solaris 8 For details on specific configurations (workstation, processor and clock speed, graphics adapters), required service packs and patches, contact your local Siemens PLM Software office Contact Siemens PLM Software Americas Europe Asia-Pacific Siemens Product Lifecycle Management Software Inc. Siemens and the Siemens logo are registered trademarks of Siemens AG. LMS, LMS Imagine.Lab, LMS Imagine.Lab Amesim, LMS Virtual.Lab, LMS Samtech, LMS Samtech Caesam, LMS Samtech Samcef, LMS Test.Lab, LMS Soundbrush, LMS Smart, and LMS SCADAS are trademarks or registered trademarks of Siemens Industry Software NV or any of its affiliates. All other trademarks, registered trademarks or service marks belong to their respective holders.