SIMULIA 리소스 센터

A coupled thermo-mechanical model of solidifying shell (Koric, 2006, 2011), (Hibbeler, 2009) in Abaqus/Standard is combined with turbulent fluid flow in the liquid pool and thermal distortion of the mold to create an accurate multiphysics model of steel continuous casting. The new model is applied to calculate temperature stress and deformation in a commercial beam blank caster with complex geometry. Results from the complete system compare favorably with plant measurements of shell thickness.

Customer Papers

Within the wound care arena, the understanding of the effects of Negative Pressure Wound Therapy (NPWT) upon tissue and the processes of healing are still being developed. Optimisation of the level of strain applied to the tissue to affect the healing process, without causing undue stress on the tissue and pain to the patient, remains a key clinical objective.

Customer Papers

A drive train is only as strong as its weakest link. One of those links is the flexplate. It is used with automatic transmissions to connect the engine to the torque converter/transmission. A flexplate is a thin metal plate that operates at high RPM. Flexplates are optimized for stiffness, strength and mass. Stiffness controls the axial forces transmitted between the engine and transmission. The complexity of flexplate loading from the engine and transmission makes it an ideal candidate for applying optimization techniques for design of a robust plate.

Customer Papers

In this Technology Brief, we describe Abaqus/Explicit modelling of ballistic impact of metal projectiles on metal targets. An impact velocity range of ~0.4009 km/s is considered and very good quantitive and qualitative agreement between the numerical results and experimental data is shown for both normal and oblique impacts. We will demonstrate the utility of Abaqus/Explicit as a tool for reducing the amount of experimental testing as well as assessing the projectile residual velocities and time-resolved kinematics.

Tech Notes

The importance of the rule of simulation at a conceptual design stage is pointed out recently. The methodology using multi-objective design optimization and data mining, which is called MODE (Multi-Objective Design Exploration), is helpful to find out design knowledge. In this study, we show that the design knowledge found by MODE is fruitful for decision making at a conceptual design stage of real world example i.e. contour design of a fuel efficient tire. Our procedure of MODE consists of nonlinear FEA to predict tire performance, evolutional computation to get desirable solutions including Pareto solution, and data mining to find out design knowledge.

Customer Papers

This paper presents an automated Weld & Adhesive Optimization process developed at FORD to improve vehicle structural performance using a unique parametric technique developed by DEP, Inc. Variables include weld pitch and its alternative forms such as number of welds in a given weld line and % change to the weld count, type of welds, layers of adhesive bonds and adhesive bond dimensions. This process was implemented successfully on a passenger car currently in production with the primary objective to increase modal frequency separation between body-in-prime bending and torsional modes while maintaining the current number of total welds in BIP structure.

Customer Papers

Numerically simulating high speed ice or hail impact is challenging because of the extreme deformation, fragmentation, contact, and material model complexity. In this Technology Brief we demonstrate how the Smoothed Particle Hydrodynamics functionality in Abaqus/Explicit can be used to analyze impact. Favorable comparison with experimental data will be shown.

Tech Notes

In the research the most important problem is to determine kinematic parameters of the ‘soil-structure’ system through the use of the following methods from SIMULIA(ABAQUS): direct integration method, modal method and advanced modal method (SIM-architecture), where projected damping matrix is considered as completely filled. This paper offers theoretical description of the above-mentioned methods, their advantages and disadvantages, and the comparative analysis of their results for the schematic model of the ‘soil-structure’ system. Besides here one can find results of the calculation for a typical NPP building.

Customer Papers

The manufacture of continuous fiber-reinforced composite parts often involves a designbuild-test methodology which can be expensive and time-consuming. A predictive design tool, such as the finite element method, is valuable to assist in understanding the relationship between the composite processing conditions and part quality, thus reducing the dependence on the designbuild-test methodology. The ability of the design tool to predict part quality based on manufacturing process parameters is dependent upon the mechanical behavior of the fabric reinforcements, which includes the in-plane shearing and tensile behaviors, bending stiffness and friction between contacting surfaces during the manufacturing process.

Customer Papers

Defects may be introduced in metal pipelines during construction, repair, or by accident. A common example ia a gouge from a backhoe bucket or other heavy equipment. At the site of a local defect operating stresses may become sufficiently concentrated to induce plastic deformation and material damage, possibly resulting in eventual failure of the pipeline.

Tech Notes

Silvestre Pinho, a senior lecturer in AeroStructures at Imperial College London, Department of Aeronautics, was the recent winner of the 2010 Albert Cardon Award for “Best Under 35-Years-Old European Researcher in Composite Materials,” given once every two years by the European Community in Composite Materials. To those who have met him, it’s evident that Pinho brings enthusiasm and innovative methods to his research.

Customer Papers

he main functions of a rubber bushing are basically to join the elements between rigid structures in the vehicles, isolate vibrations through to the chassis and avoid the transmission of noise. Due to the increasing interest of multibody simulations of complete vehicles or subsystems, it is important to develop and effective models to represent the static stiffness of these rubber bushings. During the vehicle development process, shape optimization of rubber products is also need to have desired stiffness curves. The objective of this study is to optimize rubber bushings to meet the stiffness curve requirements. A Fortran code has been developed to find the optimum shape parameters of 3D bushing models using differential evolution algorithm.

Customer Papers