SIMULIA 리소스 센터

This paper details a GUI based application for performing automated design and analysis of piping parts at Technip. Technip is a world leader in the fields of project management, engineering and construction for the oil & gas industry. Strategy adopted for this application is to provide designers with a plugin to update CAE parametric model build by experts. The application can be customized via xml configuration files to add other models.

Customer Papers

The modeling of quasi-static forming processes and loading conditions with Abaqus/Explicit can present challenges related to the generation of system level force vs. deflection curves and the investigation of general stability behavior. This paper describes a procedure whereby energy history data can be used to generate estimates of quasi-static force vs. deflection curves. The procedure utilizes the principle of virtual work to establish an estimate for the quasi-static equilibrium curve and is accurate when the dynamic inertial forces of the simulation remain small compared to the internal deformation induced forces. The force vs. deflection curves generated by this procedure can also be used to characterize general structural stability characteristics. The procedure is valid for loading conditions that are proportional and monotonic, and is applicable to general structures when simulating quasi-static conditions.

Customer Papers

Over the past years the Abaqus solver has proven to be very efficient, accurate and robust to study the above mentioned stent design characteristics, both for balloon and self-expandable stents. This paper presents a novel simulation strategy and post-processing tool to accurately analyze balloon expandable stents in terms of radial strength and scaffolding. The underlying platform for this advanced and interactive pre- and post-processing tool is the open-source pyFormex design software.

Customer Papers

Offshore containers are exposed to the movement caused by wind, ocean currents, and unpredictable weather conditions so a good structural resistance is required for them. A dynamic analysis has been developed using Abaqus/Explicit to study the structural response of a horizontal pressure vessel mounted in Floating Production Storage and Offloading (FPSO) topsides in the Gulf of Mexico (GOM) coast. The model includes fluid behavior of crude oil inside the container for which the linear Us-Up Hugoniot equation of state is used. The viscosity of the oil was varied according to temperature. A single adaptive meshing rule is also used to prevent distortion of fluid elements.

Customer Papers

High precision reduction gears are used in the many industrial robots around the world. In order to respond to increasing demand for high durability under higher loads within a limited space, Nabtesco has been striving to analyze the whole assembly of high precision reduction gears for industrial robot arm joints. Initially, an analysis under static load (torque) was attempted using Abaqus/Standard for a whole assembly model with several hundred contact points. The result provided us with important data like stress distribution and the maximum contact stress, factoring in the elastic deformation of all the parts.

Customer Papers

Electric Boat’s design process involves evaluating the structural stability of ring-stiffened cylinder structures through finite element analyses to simulate a static pressure load. Each design revision of the cylinders must be evaluated to verify that the structure meets the required stress criteria for the static pressure load; any revision to geometry or material would require the design to be reevaluated. Additionally, it is critical that the weight of the structure is kept as light as possible while still satisfying all stress and deflection criteria. This presentation documents the use of Isight and Abaqus to perform a weight optimization for static pressure loading on a ring-stiffened cylinder, varying geometry and model thicknesses.

Customer Papers

Soils are mixtures of three phases, a porous soil skeleton of solid mineral particles and two fluids water and air filling the pores completely. The soil skeleton and the fluids can move depending on the constitutive behaviour of all constituents and interactions between them. In general a coupled deformation/seepage problem exists which can be uncoupled for certain circumstances. Mechanical models of soils are based on continuum mechanics or particle mechanics. The continuum approach requires a mixture theory, uncoupled problems require the classical continuum mechanics for single-phase materials only.

Customer Papers

This paper presents results of finite element, thermal-stress analyses that investigate the effects of connection proximity with respect to adjacent columns and the extent of SFRM coverage. More specifically, the performance of a series of model configurations that vary in connection proximity and SFRM coverage were studied under exposure from a typical office fire. These parametric studies demonstrate that minor changes to a connection assembly may have a significant effect on its fire performance. In some cases, relatively simple connection detailing changes can enhance the overall structure’s fire resistance, even when SFRM coverage is not perfect.

Customer Papers

To maximize fuel efficiency and performance, vehicles are designed with minimum weight, which can reduce the cost of parts and directly reduces the engine power required for vehicle acceleration. However, the reduction of material from structural parts and body panels leads to reduced stiffness and increases the susceptibility of the parts to vibration, which might transmit noise to the vehicle interior.

Solution Briefs

Finding the right trade-off between drag and weight is a key challenge in wing design. A thinner transonic wing has lower drag but will also be much heavier, which adversely affects the airplane performance. And as any passenger can see through an airplane window, the wing will deform under aerodynamic loads.

Solution Briefs

Beyond fuel efficiency, aerodynamics affects the driver experience of vehicle handling. The forces and moments on the vehicle affect the grip that the tires have on the road, response of the vehicle to steering inputs, and stability of the vehicle to changes in the road or wind conditions. Vehicle handling attributes are strongly driven by transient effects.

Solution Briefs

The brake system is a critical part of any vehicle and its failure could endanger passenger safety. Brake performance must be guaranteed with extensive testing under extreme conditions. Brake system design needs to be highly optimized to prevent the disc from overheating, which reduces braking efficiency or could lead to complete system failure. Aerodynamic cooling of the brake disc through convection is the key mechanism for maintaining the brake within acceptable operational temperature levels.

Solution Briefs