1 Corresponding Author. Asst. Prof., Electrical Engineering and Computer Science Dept., Glennan 515B. 2 Ph.D. Student, Mechanical and Aerospace Engineering Dept., Glennan 109. Abstract. Robotic assemblies are inherently hybrid systems. This paper pursues a class of multi-tiered peg-inhole assemblies that we call “peg-in-maze” assemblies. These assemblies require a force-responsive, low-level co...

Simulation and prediction of eigenfrequencies and resonance problems for flexible structures is an important task in disciplines such as robotics and aerospace engineering. However, little effort seems to have been put into the problem dealing with modal analysis of mechatronic systems containing coupled flexible structures and control systems. When, for instance, designing a satellite tracking...

Developing distributed control systems requires tools that can deal with high complexity, integrating design information from multiple domains and allowing analysis of the overall design in terms of technical and commercial performance. Currently, no integrated multidisciplinary design tools exist which can do this. Thus, the ability to simulate and assess system performance and rapidly prototy...

The crevice correction is a common type of localized corrosion which costs multibillion dollar losses in many different fields including aerospace, automobile, and building structures. The crevice geometry can easily catch moisture and impurity which accelerates the chemical corrosion. It is one of the dangerous corrosions that can cause sudden failure of the products and involve the human inju...

Abaqus/Standard simulation of Lamb waves in smart composite plates is investigated for detecting delamination type damage. Composite plates typical of aerospace structures are used and a PZT actuator is surface bonded to excite Lamb waves. Abaqus model of composite plate uses layered solid elements. Piezoelectric (PZT-5H) actuator is modeled using piezoelectric elements that have both displacem...

In the automotive, telecommunication, and aerospace industries, modeling and simulation are used to understand the behavior and outcomes of a new design well before production begins, thereby avoiding costly failures. In the pharmaceutical industry, failures are not typically identified until a compound reaches the clinic. This fact has created a productivity crisis due to the high failure rate...

Satellite services (e.g. Internet-over-Satellite or GPS) are getting more and more important in our lives, whereby the operational area is still growing. To guarantee those services, reliable simulation tools are necessary to scale and validate actual and future satellite systems. Therefore, this paper gives an overview about development, functionalities and benefit of a satellite simulation fr...

An advanced LES code, named SPARK-LES, is currently under development at CIRA within the frame of the HYPROB program. The general goal of the HYPROB program, coherently with CIRA programmatic guidelines in the field of Aerospace Propulsion, is to improve CIRA design and research capabilities on Liquid Rocket Engines, and in particular on the LOx/CH4 oxidizer-fuel mixture. One of the objectives ...

Underactuated systems, defined as nonlinear mechanical systems with fewer control inputs than degrees of freedom, appear in a broad range of applications including robotics, aerospace, marine and locomotive systems. Studying the complex low-order nonlinear dynamics of appropriate benchmark underactuated systems often enables us to gain insight into the principles of modelling and control of adv...

DEFINITION: The NAS Parallel Benchmarks (NPB) are a suite of parallel computer performance benchmarks. They were originally developed at the NASA Ames Research Center in 1991 to assess high-end parallel supercomputers [?]. Although they are no longer used as widely as they once were for comparing high-end system performance, they continue to be studied and analyzed a great deal in the high-perf...