software

Numerical methods applicable to the tibia bone and soft tissue biomechanics of an ACL reconstructed knee are presented in this paper. The aim is to achieve a better understanding  of the mechanics of an ACL reconstructed knee. The paper describes the methodology applied in the development of an anatomically detailed three-dimensional ACL reconstructed knee model for finite element analysis from medical image data obtained from a CT scan. Density segmentation techniques are used to geometrically define the knee bone structure and the encapsulated soft tissues configuration.

As the maximum speed of bullet trains continues to increase, overheating and thermal deformation/stress on brake systems are going to be critical for emergency stops. Precise prediction of the maximum temperature is needed for the design of brake systems, especially for both discs and linings, where how to handle the high speed spinning of discs is the point of the heat/structure coupled analyses. Abaqus provides couple of potential methods but each one had critical shortcomings.

Electrically operated high temperature furnaces and reactors are used in many industrial

manufacturing processes such as sintering or single crystal growth in order to allow for the

required process conditions. In view of their outstanding characteristics refractory metals are

Since the 1946 issuance of the ASTM bearing steel specification, A295, the research and

development of bearing steels has resulted in substantially improved fatigue and wear

Today manufacturing companies are more and more often characterized by a growing product

and processes complexity. Projects needs the participation of a pool of companies that have to

collaborate in a multidisciplinary and integrated way following a defined PLM strategy.

These challenges are meant to introduce a new way of working, based on innovation and

global collaboration, both internally among different disciplines and externally between

operations, administration, and maintenance and its suppliers. The development engineering

Carbon-fiber-reinforced plastics (CFRP) are being used for highly loaded lightweight structural components for many years. Up to now mostly insufficient two-dimensional classical failure criterions, which are embedded into FE-software like Tsai-Wu, Hill, etc. have been used for the dimensioning of composites. To achieve better predictions of the three-dimensional complex composite failure behavior newer, so-called action-plane based failure criterions have been developed, e.g.: PUCK, JELTSCH-FRICKER or LaRC04.

Each year companies spend millions of dollars for developing new products with high quality and reliability. Highly reliable products require longer test times to verify, and usually takes a few iteration of design-test-fix cycle. Development time can be minimized by (1) doing accelerated testing (ALT) and (2) reducing the design-test-fix cycle by developing methods to predict and test for reliability in simulation environment. Finite element modeling and analysis provides an excellent alternative in evaluating designs to improve on reliability.

With the trend towards miniaturization and multi-functionality in products such as mobile electronic devices, miniature IC packaging such as fine pitch Ball Grid Array (BGA) package and Chip Size Package (CSP) are increasingly being used. However, the inherent vulnerability of these miniature IC packagings has brought along new reliability problems. Among them, the drop/impact robustness is the most challenging in terms of testing and designing.

A printer chassis provides an important function of locating and securing the relative position of all the sub-systems that makeup a printer. The customer location could be thousands of miles away from the factory and many modes of transportation are required from ship, train, trucks, forklift, to pushing across corridors, stairs and elevators. The transportation loads are the most sever the printer would see in its life time. These include impacts on all sides at 3 MPH to an 8 inch vertical drop.

Random response analysis is a linear approach, while most real life random vibrations involve nonlinear components. It is challenge to analyze a nonlinear system subjected to random vibration. This paper presents an Abaqus FEA approach on the fatigue life calculation of an automobile assembly with rubber isolators subjected to random vibration. Random loading is categorized using Power Spectral Density (PSD). An equivalent dynamic analysis or a random response analysis was used to obtain the maximum stress level and location from random vibration.