Simulation is an increasingly important part of product design where the ultimate goal is design optimization. After completing a simulation on a baseline design, it is common for engineers to perform the same simulation on multiple design iterations, under varying operating conditions, to identify which design delivers optimum performance. The combination of multiple design iterations and operating conditions requires engineers to run tens — or even hundreds of simulations to identify the optimal design. Setting each simulation up manually can be very time-consuming and expensive. Continue reading
Engineering simulation software use among all types of engineers is growing rapidly. We already see our most innovative customers rapidly deploying simulation design software to engineers at all levels in their organizations. Gone are the days when a single engineer could design the whole product, or when a company could afford to develop and sell non-optimized products, such as bike frames that are strong but also heavy. Product development trends towards faster, better and cheaper mean that trade-offs have to be made between different goals to optimize the overall product, such as creating a bike that is strong and lightweight. Simulation helps companies get products to market faster while balancing their objectives. Easier engineering simulation software for every engineer is the solution. Continue reading
In my almost 20 years of work at CADFEM, an Elite channel partner of ANSYS in central Europe, I have seen a continuous transition in the usage of simulation from experts to development engineers. One big step in this direction was the introduction of ANSYS Workbench. A second — often undervalued — approach, how simulation helps our customers in a better product development is the usage of automated simulation processes by implementing products such as ANSYS AIM. Continue reading
In all real life flows, the properties of a fluid material vary with pressure and temperature. The degrees of these variations depend on both the fluid itself and the flow regime. Some engineering simulations can assume constant material properties, but compressible effects are considered significant above a Mach number of around 0.3. Hence, in order to model applications such as external gas flows, nozzles and exhaust systems, material modelling techniques are required that can capture these material property variations.
In ANSYS AIM 16.2, we have incorporated the ideal gas model to determine the fluid density using the ideal gas equation of state. AIM also provides users a way to prescribe temperature dependent variations of other material properties (Specific Heat, Dynamic Viscosity and Thermal Conductivity), either by using an algebraic expression or by defining a table of values. Continue reading
Many product designs require the simulation of structural assemblies, which includes predicting the deformation and stress of the assembly where multiple parts come into contact or are connected. Parts of an assembly may be connected using a variety of assembly conditions including interference fits, bolted connections, and welds, or parts may otherwise come into contact under structural loads. With the release of ANSYS 16.2, we have included a number of new capabilities in ANSYS AIM that allow you to quickly evaluate the structural behaviors of assemblies to ensure product performance and reliability. Continue reading
Earlier this year, we introduced ANSYS AIM, the first integrated and comprehensive multiphysics simulation environment designed for all engineers. Since then, we’ve been working hard to add new features to allow you to address a broader range of product design challenges. With ANSYS AIM 16.2, we have included many new capabilities that allow you to rapidly predict the thermal and thermal-stress performance of product designs. Continue reading
The energy of a human voice at certain pitch and volume can shatter a wine glass due to vibrations caused by sound waves. Motion of fluids can also create structural vibration, sometimes with disastrous consequences: In 1940, the Tacoma Narrows Bridge in Washington state collapsed when high winds caused the structure to oscillate with increasing amplitude from end to end, until sections of the bridge fell into the river. The bridge structure was responding to the transient forces caused at certain flow frequencies as the wind blew past the bridge. At a critical vibration frequency corresponding to the natural (or harmonic) frequency of the structure, mechanical resonance occurs, and the objects fail — glass shatters, the bridge collapses. Continue reading
You may have read a quick blog post at Desktop Engineering about ANSYS’s electric machine simulation capabilities. Here we dive into the technical aspects and implications of thermal simulation for electric machines.
Modern electric machines are designed to meet a wide range of applications, all facing a variety of different technical challenges. They are designed to be compact with high power densities, to have integrated power electronics, to be high-speed for higher power density, and to handle harsh environments.
These challenges all have thermal implications that affect the lifetime and performance of the electric machine and power electronics, and must be balanced with cost goals. ANSYS simulation tools, Fluent and Maxwell, can be used to predict the thermal and electromagnetic performance of these systems, and can therefore be used to optimize design choices for both thermal and cost considerations while meeting all application objectives. Continue reading
Earlier this year, we introduced ANSYS AIM, the first integrated and comprehensive multiphysics simulation environment designed for all engineers. Check out Richard Clegg’s recent blog post for an overview.
Since then, we’ve been applying AIM to a wide range of industrial applications, including the medical device industry, where AIM provides a modern, easy-to-use tool for a variety of applications. Continue reading
As you have probably heard, in January of this year, ANSYS 16.0 was released with a full set of new features and exciting enhancements covering our entire simulation portfolio (see more here). But in this blog, I would like to tell you a little more about turbomachinery blade row flow modeling capability in ANSYS 16.0.
Transient blade row (TBR) simulation is an important analysis and design tool, enabling turbomachinery designers to reliably improve the performance and predict the durability of rotating machinery. Traditional transient simulation methods are expensive since it requires simulation of all blades in the full 360 degrees to accurately account for the pitch difference between adjacent blade rows. However, ANSYS CFX pitch-change methods resolve this challenge by providing time accurate unsteady turbomachinery flow simulations on just a small sector of the machine annulus (typically simulating only one or a few blades, a reduced blade row model), thus tremendously reducing computing cost resources and and reducing the overall time to obtain the simulation. Continue reading