With parallel processing capabilities, LMS fatigue solvers can handle large problems efficiently. Already in the standard configuration, larger analysis calculations are split in two processes to take advantage of modern dual core processors. Adding the durability parallel processing option increases the calculation power and drastically decreases calculation times by another 4 processing nodes. This option is stackable, which means that that one can add 8 nodes using simply two licenses. The durability parallel processing option is compatible with the vibration fatigue solver (VL-DUR.23.2) and the FALANCS solver for component and system-level fatigue (VL-DUR.24.2 and VL.DUR.25.2).
This package contains functionality for finding and modifying or creating new spot weld connections in the mesh. It is able to extract spot weld definitions from CAD structures and existing meshes directly. New spot welds may be defined interactively or automatically. The module supports various spot weld representations from simple bars and hexahedra to Nastran CWELD and fine spot weld models for enhanced durability simulations. Spot weld modeling covers fatigue life analysis of spot welds including traditional force-based approaches (Rupp, LBF, and JSAE) as well as local stressbased approaches. A unique and intelligent algorithm combines the ease-of-use and performance of the first approach with the enhanced accuracy of the latter, delivering an ideal balance of performance and accuracy.
Seam-welded components typically have a limited lifespan. Simulating the fatigue behavior of welded structures is key to the design process. Structure loads can be represented as load-time histories or in frequency domain. The module lets users examine multiple loads. This unique seam weld module automatically detects connections between different sheets and classifies the connection into butt and edge welds, overlap joints and T joints with different angles. Using the information from the finite element model the appropriate sheet thickness is assigned. The designer only has to check specific manufacturing and welding details.
Environmental temperature and especially changes in the temperature have a significant influence on fatigue. On one hand, engineers need to include these effects in the fatigue analysis. On the other hand, material data accounting for these affects are expensive to achieve. This module offers a multi-level approach to achieve a good compromise between accuracy and efficiency. From simple temperature dependent SN-curves to temperature dependent stress-strain behavior and to creep and oxidation, the user can choose the method matching his problems.
LMS Virtual.Lab Optimization provides a set of powerful capabilities for single and multiattribute optimization. Through Design of Experiments (DOE) and Response Surface Modeling (RSM) techniques, engineers gain a rapid insight in all the possible design options that meet their requirements. Using advanced optimization routines including manufacturing for Six Sigma, LMS Virtual.Lab automatically selects the optimal design,taking into account real-world variability and meeting the strictest robustness, reliability and quality criteria.
