SIMULIA Ressourcen-Center

Your guide to efficient product development

EBooks

CST STUDIO SUITEELECTROMAGNETIC FIELD SIMULATION SOFTWARE

Brochures

Engineering products are becoming more sophisticated and complex, yet development timescales invariably shorten. In today’s global marketplace, competition is becoming more intense. More than ever before, successful products need to be highly optimized for their target markets. This might demand optimization in different forms such as lower raw material costs, better performance, smaller size or greater efficiency.

Brochures

UNIVERSITY COLLEGE LONDON LIFE SCIENCES

Tech Notes

Correct hot forming design relies on accurate prediction of forming loads, material deformation, and material properties. This is particularly true for coupled thermomechanical analyses, where die/workpiece contact will change local deformations and temperatures. These strains and thermal histories can change the material microstructures and resulting product properties. This presentation examines the influence of different material and contact models within a hot forging simulation and discusses the consequences on ultimate product performance. We use rate-independent plasticity and compare the results with the Anand internal variable, viscoplastic model available within Abaqus. We also use different contact conditions with varying pressure sensitivity for heat transfer. The simulations demonstrate that constitutive model selection has a strong effect on the final predicted properties of the forging.

Customer Papers

Over the past decade, hydraulic fracturing has become an industry-changing technology that enables commercial production of hydrocarbons from previously non-productive lowpermeability shale formations. R&D efforts focus on the development of economically efficient production protocols, where the selection of engineering solutions is guided by numerical simulations. Typically, the simulations are based on phenomenological fracture models that are adapted for the prediction of fluid-driven fracture processes at depth. These models rely on a longterm trial-and-error approach and offer reliable material response at conditions that have previously been experimentally investigated. For this reason, an extrapolation of such phenomenological models into untested regimes is not always successful.

Customer Papers

The current work pertains to a re-closeable annular flow valve oil completion tool (XAFV) with high gas flow passing through the valve, causing pressure oscillation due to flow separation and high turbulence energy. The objective is to assess the vibration level to protect the tool from damage. The first step was to perform CFD simulation by using Fluent on The valve port region. The power spectral density (PSD) of pressure fluctuations at the high turbulence region was obtained. The next step of the work was to extract natural frequencies of the tool by using Abaqus. The last step was to utilize random vibration analysis (RVA) to obtain the PSD and root mean square of stresses to assess the random vibration effect by using CFD predicted PSD of excitation pressure.

Customer Papers

PLASTIC TECHNOLOGIES, INC. CONSUMER PACKEGED GOODS

Customer Stories

Overview Engineers have to develop innovative products in the shortest development time...

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Introduction There is no doubt that we are living in increasingly precarious...

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