ESL-DYNA is an optimization software that couples GENESIS to LS-DYNA Nonlinear Structural Analyses. The software is developed by leading experts in structural optimization Vanderplaats Research & Development Inc. (VR&D). ESLDYNA is based on the Equivalent Static Loads (ESL) method which takes advantage of the capabilities of GENESIS to solve large scale optimization problems based on the responses from a nonlinear finite element analysis.
GENESIS, a linear structural optimization program, is used to solve large scale optimization problems based on the responses from a nonlinear finite element analysis. Design is based on the advanced approximation concepts approach to find an optimum design efficiently and reliably. When the optimum of the apporoximate problem has been found, a new finite element analysis is performed and the process is repeated until the solution has reached the optimum value.
Sizing Optimization - is an optimization capability which allows the user to find the best dimensions of any designable elements like bars, shells and composites.
Shape Optimization - is an optimization capability which allows the user to find the best shape possible. The software finds the best location of the finite element nodes, which define the shape of the structure.
Topography Optimization - is an optimization capability which allows the user to find the location and shape of bead patterns to stiffen panel structures.
Topometry Optimization - is a unique optimization capability which allows the user to find the optimal distribution of sizing dimensions over the structure. Like topology, this capability can be used to find the optimal places to take out material. Unlike topology, it also can be used to find the best places to add additional material.
Topology Optimization - is an optimization capability which allows the user to find the best distribution of material. With topology optimization, an optimal structure is generated by carving out material from a given design space, allowing for a given amount of material.
Freeform Optimization - is a new special shape optimization capability which allows the user to find the best location and shape of rib patterns that stiffen solid structures. It can also be used to find the best location of grids in any type of structure.
Benefits of ESLDYNA and GENESIS:
- Seamlessly integration of GENESIS optimization capabilities with LS-DYNA® analysis
- Multiple LS-DYNA® loading conditions or input files can be considered simultaneously
- Linear loading conditions/analysis can also be used in the same optimization
- Ability to transfer data between different FE Mesh
- Reduced Computational Cost
- Easy implementation of Shape, Sizing,Topology, Topometry, Topography, and Freeform design changes
- Easy and efficient coupling using the Design Studio Plugin
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