EVENTO
Topology Optimization with Stock Material for Manufacturability
Tipo de evento: Seminário LNCC
Topology optimization aids the computational design of structures and materials by determining the optimal distribution of material within a design envelope with regards to structural performance and weight. Advances in this technology are fueled by a vibrant and growing research community, and off-the-shelf software is today routinely used in the design of structures across a wide variety of applications and industries. However, as I discovered during the course of my previous industry tenure, topology optimization is still far from becoming standard work in the product development process, and the customary design-analysis iteration remains the norm in most cases. At the root of this shortcoming is the way in which designs are represented in existing topology optimization methods, that is, implicitly through a continuous density field or level set representation. These methods render highly optimal, organic designs; however, in general these designs cannot be readily realized with available stock material and/or economical manufacturing processes. As a result, engineers spend significant effort `translating the optimal topology into a design that can be fabricated. In doing so, a significant departure is often made from the optimal topology that leads to increased weight and/or unsatisfactory structural performance. In some cases, this departure can be so drastic and the effort to `fix the topology optimization so involved, that the designer may find it far more efficient to resort to the usual trial-and-error process. In this talk I will discuss ongoing research efforts in my group to develop methods that produce from the onset optimal topologies that conform to stock material, such as frames made of stock bars or plate structures. This is achieved through the smooth projection of an analytical description of these stock elements onto a fixed grid for analysis. I will present examples of our methods and discuss research directions.
Data Início: 24/06/2016 Hora: 10:00 Data Fim: Hora: 11:00
Local: LNCC - Laboratório Nacional de Computação Ciêntifica - Auditorio B
Comitê Organizador: Julián Norato - Mechanical Engineering Department at The University of Connecticut - USA - -
