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Part 1: Using Simulation of Electronics Reliability to address industry standards (SAE J3168, MIL-810G, GMW3172 and/or DO-160G)

It is increasingly important for product designers to consider electronics durability and PCB reliability across the product’s entire service life – accounting for all external influences that it will experience during production, shipping, and the environment during its operation. Here we look at how simulation is used to satisfy the requirements dictated by common industry standards.

Guest Blog: Using Ansys Maxwell for Motor Design in Formula Student Competition

The Formula Student competition challenges engineering students from around the world to design, manufacture, market and race a small, open wheeled formula style racer. Since its inception in 2000, Monash Motorsport has competed in the Australasian competition every year, building a combustion engine powered racer. Additionally, Monash has been fortunate enough to compete against the best in the world, taking part in the German, Austrian and UK competitions in 2006, 2010, 2012, 2014, 2016 and 2018. In 2016, Monash began developing an electrically powered car alongside the teams combustion car. This year served as a research and development year, allowing time for the team to learn, analyse and decide on the core concepts for the 2017 vehicle. Adopting the “one team, two cars” mantra, Monash...

Dramatic Accelerations in the Performance of Antenna Placement and Co-site Interference Simulations with NVIDIA GPUs

Figure 1 - Radiation pattern of a ship calculated in ANSYS HFSS SBR+
After talking to design engineers who are responsible for both Antenna Placement and Co-site Interference simulations, we have heard that they typically desire results to be available in less than 10 minutes in order for them to effectively test all the different configurations required on a real-world project. If the simulation time grows beyond 10 minutes, then they consider that the number of design scenarios which can be analysed in a given working day becomes detrimental to their design process. In the past, this has been problematic for companies wanting to adopt simulation technology as antenna placement type problems will typically have enormous domain sizes and the types of geometry involved can rapidly escalate the difficulty of analysis. The first example presented here involves the...

Wearable Conformal Antenna Design in Presence of the ANSYS Human Body Model

Figure 4 – Cylindrically Curved Structures of radii 5cm, 7.5cm and 10cm

The Internet of Things has rapidly become a major industry focus with dramatic advancements in low power electronics and in wireless technology. Body-worn communication systems are now capable of detecting body motion during exercise and monitoring functions like heart rate and blood pressure. In such systems, a critical topic is how to preserve antenna performance, while achieving the requirements of small size, light weight, low power, low cost and ease of fabrication. It is also desirable to check how the antenna performance will be affected once brought into contact with the human body. The ANSYS Electronics Desktop is a tool suitable for such design applications. It is user friendly and easy to operate, leading to accurate simulation results. Planar Microstrip Patch Antenna Design in Free…

Developing Power Electronic Products in the ANSYS Electronic Desktop

Magnetic Field within the transformer core and around the winding

The development of power electronics products always relies on transient circuit simulation to evaluate the internal operation of the product and the effect of outside conditions in a wide variety of scenarios. With this design style in mind, circuit simulation has developed to focus on being extremely fast and parametric to allow circuit designers to run hundreds and thousands of iterations on a design per day. However, as product performance reaches ever higher and the design limitations become ever tighter, circuit simulation is starting to lack the accuracy and functionality required to predict the more expensive design metrics. Energy losses due to skin effects, nonlinearities due to saturable magnetics, trace/package coupling due to parasitics and high frequency harmonics due to fast switching semiconductors require detailed…

Error-Free Embedded Software Design as part of a Multiphysics Simulation with ANSYS

SCADE Suite and SCADE Display in the Airbus A380 Cockpit

In the pursuit of ever higher performance, software is taking over a much larger responsibility for the function of the end product than ever before. A particularly dramatic example is the design of inherently unstable aircraft such as the Lockheed F-117 Nighthawk. Without the flight computers making very fine adjustments every millisecond, it would flip upside down and crash with no possibility of recovery by the pilot. This illustrates the pressing need to be able to develop software without errors and extensively test it against both theoretical and practical scenarios without leaving the engineers workstation. Software standards are already in place across a wide variety of industries to provide guidance on developing safety critical software but the actual performance of the device still depends on…

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