CAD

The rapid growth of End-User Computing (EUC) since the 1980s has dramatically altered the work methods of professional staff such as planners, educators and managers, who can now improve their performance by using personal computers (PCs). However, recognising EUC success, as well as identifying and measuring its many intangible benefits, still presents a major challenge to today's researchers and managers and requires new approaches. Although user satisfaction has been widely advocated as a surrogate for EUC success, the need for ...

Robust design and reduced lead-time are key issues in the general field of product development today. The meaning of KEE (Knowledge Enabled Engineering) can be generalized as a process to customize computer aided engineering systems to reduce the lead time for routine engineering work as well as securing the design “know-how” for specific components. As a part of the KEE development at Volvo Aero, methods and rules are defined and implemented in applications to secure repeatability and aid product developers ...

This master’s thesis was conducted at Volvo Aero Corporation (VAC) in Trollhättan at the department of combustion chambers and nozzles. This department is responsible for the development of the main engine nozzle extension to the European Ariane 5 rocket. During space flight there are a variety of loads which may cause structural instability in the main engine nozzle extension. To be able to predict the buckling margin accurately, realistic boundary conditions at the interface between the combustion chamber and the nozzle ...

Volvo Aero Corporation designs and manufactures components for civil jet engines. Design solutions for intermediate cases with integrated outlet guide vanes, which has the job to both carry load and direct the by pass air, are considered competitive for the future. Critical factors when designing integrated outlet guide vanes are weight, cost, structural stiffness, sound damping and operating life. Historically, the outlet guide vane (OGV) configuration has been solid vanes manufactured in materials like aluminium and titanium. A solid vane design ...

One important parameter in the study of dynamic systems is material damping. It is defined as the ability of a material to absorb vibration by internal friction and convert the mechanical energy into heat. In spite of its importance in the study of rotating machinery, it has not been studied deeply because of the difficulty analyzing and testing its different types and mechanisms. This master thesis presents a new method to measure damping in mechanical systems. The mechanical system analyzed in ...

Being a supplier of products and services in numerous military and civilian fields, Volvo Aero Corporation develops and manufactures advanced components for aircraft engines. By being aware of and reusing knowledge in the form of expertise and engineering know-how throughout the whole organization large time-savings can be made. The knowledge allows for alternative studies where different configurations can be compared and balanced. A method called Knowledge Based Engineering (KBE) can act as a valuable tool to help capturing this knowledge and ...

Every product developing industry is aiming for to reduce its “time-to-market” and thereby a way to reduce time and cost. One approach to do so is to avoid recurrence in a process. Knowledge Based Engineering allows capturing and structuring of a design and its design process. KBE allows the designer to automate the routine work, which gives the designer more time for creative work, which is the fuel of innovation. Energies can be applied for developing higher-difficulty products, requirements analysis, value ...

The work done in this master thesis can de divided into several categories, but the main idea was to optimize the principle of energy absorption that was developed in the Sirius course. If possible, the principle would then be implemented in three applications in the interior of a personal vehicle. These applications were the steering column - which would get the main focus, the ride down seats and the shoulder belt load limiter. A drop test rig, which tried to resemble ...

Volvo Aero is in the forefront of Knowledge Enabled Engineering which is a way to capture and reuse Computer Aided systems to reduce lead-times for engineering work. One way can be to use alternative visualization programs and file formats to the governing modeling tools and formats that are used today at the company. The purpose of this thesis work is to map out, investigate and evaluate the need for visualization of CAD information in the design process at Volvo Aero. To ...

In the year 2002/2003, the mechanical engineering and design project SIRIUS, performed at Luleå university of technology, was assigned to develop the electromechanical continuously variable transmission (CVT) Pergear, for use in a hybrid electric vehicle (HEV). The concept was developed by Ph.D. Per Mattsson and had until then only been simulated and evaluated without regard concerning packaging and authentic mechanical solutions. It became obvious that the powertrain concept, i.e. combustion engine, electric machines, gearbox etc, was somewhat space consuming to be installed ...