Up to 100 Times Faster – RISTRA Structural Analysis

RISTRA (Rapid Interactive STRuctural Analysis) is a software for high-performance structural analysis based on the finite element method (FEM). Our specialized algorithms and data structures are optimized for massively parallel execution to leverage the high performance and energy efficiency of graphics processing units (GPUs). RISTRA accelerates structural analysis simulations by a factor of up to 100 compared to commercially available software without loss of quality. For example, the simulation of a wheel rim designed by an industry partner was accelerated by a factor of 93. With sufficient GPU memory, RISTRA can solve problems with more than 10 million degrees of freedom.

We achieve this significant acceleration with our novel, massively parallel solver for linear systems of equations arising in structural analysis simulations, as well as GPU acceleration of all steps in the FEM, including matrix assembly. This minimizes expensive data transfers between GPU and main memory.

In addition to their high performance, GPUs use less energy per operation compared to conventional CPU systems. RISTRA is the first finite element software that also runs on GPU-accelerated edge devices, enabling fast simulations on the shop floor and the energy consumption is further reduced by a factor of 5, due to the energy-optimized hardware architecture of these edge devices. 

Features

• Linear, static structural analysis (small deformations)
• Linear isotropic and anisotropic materials
• Nonlinear structural analysis (large deformations, selected nonlinear materials)
• Simulation with tetrahedral meshes
  • TET4, TET10, TET20 (linear, quadratic, and cubic shape functions)
• Energy-efficient computation on GPUs
• Executable on energy-optimized, GPU-accelerated edge devices

Applications

RISTRA accelerates computations and reduces energy consumption in a variety of scenarios such as structural analysis of single parts or automated shape and topology optimization. Therefore, RISTRA accelerates product development by shorter design iterations. In addition, computation times for shape or topology-optimized geometry are reduced significantly – all with reduced energy consumption. 

RISTRA can be used as stand-alone software, integrated into third-party software, or adapted to customer-specific needs to optimize engineering workflows. Moreover, simulation software vendors can make use of RISTRA software components, such as the high-performance solver for linear systems, to accelerate the runtime behavior of their own products. 

We will present RISTRA at the NAFEMS World Congress in Tampa, Florida from May 15-18. We would appreciate to visit us for a personal conversation at our booth (booth number 30). 

Our colleague Dr. Daniel Weber will also have a talk about RISTRA at the Congress on Wednesday, 17th May at 2:10 pm. There you will have the chance to experience all the advantages and the fast speed of RISTRA.

Please contact us for more information at [email protected]

Fraunhofer Institute for Computer Graphics Research IGD

Fraunhoferstr. 5

64283 Darmstadt

Dr.-Ing. Daniel Weber

Head of Group Interactive Simulation

Phone +49 6151 155-202

Fax +49 6151 155-139

[email protected]

www.igd.fraunhofer.de