SIMULIA Ressourcen-Center

Origami is the art of paper folding. Our entire range of packages is formed from a flat web of packaging material using the origami technique. Virtual and reverse engineering are fundamental for the development of our technology. Complex simulations like extremely nonlinear dynamic events as well as design optimization are part of our daily activity. This paper describes how Simulia’s software with the help of automated tools has been successfully used to simulate the fundamental phases of our forming process driving in some cases its design.

Customer Papers

In railway industry a reduction of the wheel mass is at present required so as to achieve a higher energetic efficiency and a decrease of high-frequency vibrations. Wheel warming during the braking process is responsible for high thermal stresses which prove to be more relevant than stresses caused by wheel-rail contact loads. In this work an axisymmetrical finite element model is used to develop an optimization process of the wheel shape.

Customer Papers

A unified framework is presented that enables coupled multiscale analysis of composite structures and associated graphical pre and post processing within the Abaqus/CAE environment. The recently developed, free, Finite Element Analysis - Micromechanics Analysis Code (FEAMAC) software couples NASA's Micromechanics Analysis Code with Generalized Method of Cells (MAC/GMC) with Abaqus/Standard and /Explicit to perform micromechanics based FEA such that the nonlinear composite material response at each integration point is modeled at each increment by MAC/GMC.

Customer Papers

In order to quantify the influence of pores on the deterioration of cast alloys, a micromechanical finite element model using Abaqus/Standard is introduced. Python scripting is employed to automate the pre- and post processing of the microstructure generation, the finite element meshing and the model predictions.

Customer Papers

Self-loosening of nuts is a practical problem in any situations from a machine to a whole plant. Self-loosening of threaded bolt/nut systems has been researched in number of works and many of them were based on experiment historically and some were based on the finite element analyses in these years. In this paper the following self-loosening were investigated by Abaqus, namely the static loosening of nut due to the lateral motion, dynamic loosening due to the lateral impact of fastened objects and the thermal load to bolt/nut systems.

Customer Papers

The inspection and screening of flaws in high explosive filled gun fired projectiles are crucial to ensure safety for soldiers using these items. In bore failure of structural components are sure to produce lethal consequences, therefore it is of great importance to determine what the maximum permissible crack size is for a given component coming off of the production floor. The analytical process to determine critical flaw size occurs in two stages. First, ABAQUS Explicit finite element analysis code is used to conduct interior ballistic simulation of a 40mm shape charge projectile. The modeling scope includes interior gun tube geometry with drive band engraving and spin up effects.

Customer Papers

The National Transportation Safety Board (NTSB) investigates accidents to identify the probable cause and to make recommendations that would prevent similar accidents. Following the collapse of the I-35W bridge in Minneapolis on August 1, 2007, the NTSB worked with the Federal Highway Administration, the Minnesota Department of Transportation and other parties with information and expertise, including SIMULIA Central, to determine the circumstances that contributed to the collapse of the bridge, completing the investigation in 15 months. The NTSB concluded that the collapse of the bridge was caused by the inadequate load capacity of gusset plates used to connect the truss members, as a result of an error by the bridge design firm, Sverdrup & Parcel and Associates, Inc.

Customer Papers

The airplane engine business is a highly competitive market and gas turbine engines are at the leading edge of technology development. In recent years, the application of optimization techniques and simulation-driven design during the development of engines has become a standard practice. Using such techniques also shortens the development time for gas turbines and reduces development costs. This in turn helps engine companies remain competitive. The presented paper will discuss the application of automated design processes and robust design techniques for real world development tasks.

Customer Papers

There are generally three types of connections used in intermediate or production casing of thermal wells: API (American Petroleum Institute) round, API buttress and proprietary premium connections. This paper presents finite element analysis of these three types of casing connections subjected to thermal cycle loading. Based on analysis results, this paper demonstrates that the premium connection, which has a metal-to-metal seal region, is the most suitable of these three connection designs for the use in thermal wells, in terms of structural integrity and sealability. This paper also presents recommendations for casing connection design for successful service in thermal well applications.

Customer Papers

The connected structure refers to the kind of building which is composed of two or more towers connected by the connecting body in a certain height, belonging to the irregular building structure system. According to “Technical Specification for Concrete Structures of Tall Building”, the time-history analysis method should be adopted in the seismic analysis of the connected structure. The structure may have a larger plastic deformation under rare earthquake, so it is difficult to converge when the implicit solution method is used by the conventional finite element software. While the explicit integral technology provided by ABAQUS can solve the nonlinear dynamics problems better, it has a broader application in elastic-plastic dynamic analysis. Taking a specific project as an object, the application of ABAQUS in seismic analysis of connected structures is presented in detail in this paper.

Customer Papers

Compared with response spectrum method and the pushover method, Elasto-plastic dynamic time-history analysis method is considered to be a more accurate seismic analysis method. Because of Abaqus’s strong non-linear calculation function, the software makes it possible for the method mentioned above to be applied. Elasto-plastic dynamic analysis on complex structures using Abaqus has a rapid development in China. In this paper, with CCTV Building, Shanghai World Expo Axis Sun Valley, Dalian Xiaoping island super-high-rise apartment building and many other cases of engineering practice, the problem-solving experience of seismic analysis on major projects is described, which will provide some reference to the analysis method’s further development and engineering practice.

Customer Papers

This work presents a method for calibrating the built-in Abaqus hyperelasticviscoelastic material models based on test data from soft material loading and relaxation tests. This approach can be used to represent the uniaxial material behavior with 1-D Abaqus connector elements or by using the built-in 3-D material models. It is based on the Adaptive Quasi-Linear Viscoelastic (AQLV) theory, developed by Nekouzadeh, Pryse, Elson, and Genin, which offers an easy and powerful method for the calibration of highly viscoelastic materials such as soft tissue. In this paper, we first implement the AQLV method in ABAQUS using connector elements.

Customer Papers