System-Level Fatigue

LMS Virtual.Lab System-Level Fatigue offers a solution for optimizing subsystems or assemblies, and analyzing their strength and fatigue. Engineers can calculate component loads from prescribed system motion through multi-body simulation. These component loads are combined with structural stresses. Material fatigue parameters are applied to predict the component fatigue hotspots and corresponding fatigue life.

LMS Virtual.Lab System-Level Fatigue

VL Durability System-Level Fatigue 03.jpg

LMS Virtual.Lab System-Level Fatigue offers a complete solution for optimizing subsystems or assemblies, and analyzing their strength and fatigue. It allows engineers to calculate component loads from prescribed system motion through multibody simulation, using the embedded LMS Virtual.Lab Motion solver. These component loads are combined with structural stresses. Finally, material fatigue parameters are applied to predict the component fatigue hotspots and corresponding fatigue life.

Its easy-to-use interface with dedicated templates and customized wizards facilitates multibody model set-up. Scalable modeling makes it possible to refine models at any time and work with rigid or flexible component representations. The previously lengthy and error-prone job of integrating a flexible body now only takes a few mouse clicks. All the user needs to do is pick up the component FE mesh and drag it into the system model. All body connections are automatically established based on detected attachment nodes and degrees of freedom.

LMS Virtual.Lab System-Level Fatigue cascades road profiles down to load responses on the component level. The multibody model is put on a virtual test rig and appropriate boundary conditions for the road profile are automatically set. For each individual system part, predicted information on dynamic load cases, modal participation factors, excitation locations and local axes configurations are automatically transferred to the fatigue-life solver.

The post-processing functions provide fast and critical insights into the load transfer path for the fatigue life of any component. This allows engineers to quickly investigate hotspots and rerun analyses for numerous system-level design variants.

Features

Easy creation of multibody models for system load prediction and cascading of system loads to component loading
Automatic transfer of component loads for detailed component durability analysis
Optimize durability performance by tuning system characteristics for optimal load input
Parallel optimization of motion, loading and fatigue
Flexible body modeling and robust multibody solver guarantee accurate component load prediction

Benefits

Analyze durability performance earlier in the design process before flexibility is lost
Safe and efficient process avoids manual load transfer
Quickly explore fatigue life of multiple system-level designs
Accurately predict component loads
Optimize system-level fatigue performance by optimizing load-transfer paths

Covering a range of industries, LMS application cases let you discover how LMS solutions help our customers solve their real-life engineering challenges.

durability engineering process FE models LMS FALANCS seam welds 3 Audi Moves Forward with Early Durability Predictions

Audi has achieved considerable progress in supporting the durability design of upcoming models by using a hybrid approach that effectively combines testing and simulation. This new methodology, engineered in conjunction with LMS, enables Audi to streamline its durability engineering activities. Audi has improved its ability to predict and adapt the durability of key components with the LMS FALANCS solver, even before the start of the physical prototyping phase.

BMW Investigates Ways to Simulate the Durability Impact of Door Slam Sequences

LMS International, working in conjunction with BMW, FH Aachen and MAKROSS, has developed an analytical process that allows predicting the durability performance of vehicle doors. The scope of this project comprises the use of virtual simulation to predict the ability of components to withstand door slams

durability process FE models LMS FALANCS test fatigue simulation 1 Fiat Research Center Predicts Fatigue Life up-front in Product Development

Fiat Research Center in Turin, Italy, applies an improved approach. On a recent project, it succeeded in developing a much better design by assessing the product’s durability performance up-front with the help of LMS FALANCS. This allowed Fiat Research Center to save an estimated 200,000 dollars and to compress the development time with at least six months.

More cases:

Brochures

Download the LMS Virtual.Lab Introduction Brochure

Download the LMS Virtual.Lab Durability Brochure

Images


	Optimize the ride and handling behavior of the suspension; easily apply the real road profiles.		Replace the knuckle by a flexible representation with one mouse click.		The fatigue results can also be post-processed in the complete system.

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