Design and engineering

Engineering simulations for design and analysis

Computational engineering and design has been the core capability in Parresia. We provide services to companies that are interested in simulation but do not require a full-time design and simulation expert on their staff.

Some of our previous projects in this domain include:

Gas expanding inside switchgear

Modeling and simulation of engineering structures

  • Simulation of the effectiveness of failsafe components in electrical switchgear under explosive loads. Some of these design contain more than 10,000 individual parts, the smallest of which are often critical in determining whether the product can fail safely.

  • Can we reduce the cost and increase the life span of individual components of the power supply network? We have worked with pre-stressed concrete electric poles and their support structures, and explored post-stressing designs to deliver solutions to a large power distribution company in New Zealand.

  • Analysis of the potential for failure of components of ocean going ships under strong sea states.

  • Design of the optimal location of inserts and their reliability for sandwich composite structures used in aerospace and naval applications.

  • Redesign of joining processes for rubber components with heat transfer analysis.

Mushroom on a rough surface

Virtual prototyping

  • We have produced and simulated models of new concepts in dry adhesion (also called Gecko adhesion). In particular, we have explored the viability of designs that can be used to interact with rough surfaces. These structures are shown in the adjacent figure and are less than 1 mm in size.

  • Our analytical and simulation capabilities have been used in developing innovative metamaterial concepts for guiding waves around objects. The prototypes are then printed and tested using the facilities at the Auckland University of Technology 3D printing laboratories.

Foam

Modeling novel materials

  • The adjacent image shows a simulated foam-like microstructure that has been generated and simulated entirely on computers. We have designed similar materials to optimize thermal and structural properties simultaneously.

  • Architected metamaterials for dissipating energy from shocks is another area where we have expertise. We design the architecture of these materials and simulate shock wave propagation through these materials to determine whether these materials can be used to protect sensitive structures such as mobile phones.

Movies

Physics-based simulations and algorithms for visual effects.

  • We specialize in algorithms for deformation and destruction of solid objects in the visual effects industry. We have worked on these algorithms for two years with a major visual effects company in New Zealand.

  • The Material Point Method algorithm that we use in our Vaango code has been used widely in visual effects, for example, to model snow and its deformation in Frozen (Disney Animations).

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