Structural topology optimization of multibody systems

Ghandriz, Toheed; Führer, Claus; Elmqvist, Hilding

doi:10.1007/s11044-016-9542-7

Cited by 12 publications

(4 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Note also that this method results in a linear algebraic system, which we use to solve for the displacement state during each rotation increment. This is in contrast to previous methods for optimizing multi-part mechanisms, in which the algorithm performs nonlinear analysis of flexible multi-body systems [51,56]. With this linear model, the numerical accuracy is determined by the accuracy of the solution of the linear system, which we solve using a direct method.…”

Section: Methodsmentioning

confidence: 99%

Computational synthesis of wheeled vehicles via multi-layer topology optimization

James,

Kelley,

Kang

et al. 2023

Proc. R. Soc. A.

View full text Add to dashboard Cite

In current engineering practice, computer-aided design (CAD) tools play a key role in the design and fabrication of most mechanical systems, including the design of most vehicles. This software tends to rely heavily on human designers to provide the basic design concept, with the software being used to computationally render an existing design, or to perform modifications to a design to achieve incremental improvements in performance. However, an emerging class of computational methods, known as topology optimization methods, offers the potential for true black box computational design. Under this general framework, practitioners provide the algorithm with the constitutive properties of the design materials, and the mechanical function being designed for (e.g. maximum stiffness under a given loading condition), and the algorithm autonomously generates a description of the corresponding structure. With some exceptions, existing topology optimization methods are limited to generating static, single-body designs. In this study, we present a novel method that builds upon the current state of the art by combining multiple collocated planar design domains to achieve automated computational synthesis of multi-body wheeled vehicles. This capability represents an important step on the path toward automated computational design of increasingly complex, innovative and impactful mechanical systems.

show abstract

Section: Methodsmentioning

confidence: 99%

Computational synthesis of wheeled vehicles via multi-layer topology optimization

James,

Kelley,

Kang

et al. 2023

Proc. R. Soc. A.

View full text Add to dashboard Cite

show abstract

“…This is dealt with in, for example [22,23]. The next step is multibody dynamic [24]. The disadvantage of this optimization is its relatively high complexity.…”

Section: Theory Of Topology Optimizationmentioning

confidence: 99%

Modern Design of Carrier for Overhead Conveyor

Hruzík,

Struž,

Trochta

et al. 2024

Applied Sciences

View full text Add to dashboard Cite

Modern industry should apply modern design in the construction of production facilities. This is typically the case with belt production, where parts are moved towards the worker, or when moving parts from the factory to the warehouse and shipping area. There is a relatively high energy consumption associated with moving these parts. The size of the consumption is mainly determined not only by the size of the transported components and the transport technology, but also by the design of the hoppers used for transport. One way to reduce material handling costs is to make the equipment used for moving parts more efficient. A more efficient carrier should, above all, be lighter. Topological optimization can serve very well for this weight reduction. Of course, the reduction in weight not only has an effect on lower power consumption, but also on the wear of other components. Hence, later in this article, we try to quantify these impacts and assess how much benefit the use of a modern designed carrier can bring. It is also important to consider the cost of producing new carriers versus modifying existing ones. The paper describes the application of the modern designed carrier and compares it with the existing carriers as well as modified existing carriers.

show abstract

“…These methods include model-order reduction and equivalent static loading (ESL). ESL, originally devised by [30,31,80], has found usage in crash optimization [153] as well as for flexible multibody optimization [6,59,60,72,81,93,100,101,123,131,132,134]. Table 7 shows the categorization of response models.…”

Section: Response Models In Design Optimizationmentioning

confidence: 99%

A review of flexible multibody dynamics for gradient-based design optimization

2021

View full text Add to dashboard Cite

Design optimization of flexible multibody dynamics is critical to reducing weight and therefore increasing efficiency and lowering costs of mechanical systems. Simulation of flexible multibody systems, though, typically requires high computational effort which limits the usage of design optimization, especially when gradient-free methods are used and thousands of system evaluations are required. Efficient design optimization of flexible multibody dynamics is enabled by gradient-based optimization methods in concert with analytical sensitivity analysis. The present study summarizes different formulations of the equations of motion of flexible multibody dynamics. Design optimization techniques are introduced, and applications to flexible multibody dynamics are categorized. Efficient sensitivity analysis is the centerpiece of gradient-based design optimization, and sensitivity methods are introduced. The increased implementation effort of analytical sensitivity analysis is rewarded with high computational efficiency. An exemplary solution strategy for system and sensitivity evaluations is shown with the analytical direct differentiation method. Extensive literature sources are shown related to recent research activities.

show abstract

Structural topology optimization of multibody systems

Cited by 12 publications

References 12 publications

Computational synthesis of wheeled vehicles via multi-layer topology optimization

Computational synthesis of wheeled vehicles via multi-layer topology optimization

Modern Design of Carrier for Overhead Conveyor

A review of flexible multibody dynamics for gradient-based design optimization

Contact Info

Product

Resources

About