Searched for: subject%3A%22Stress%255C+constraint%22
(1 - 6 of 6)
document
Zhai, X. (author), Chen, Falai (author), Wu, J. (author)
Handling stress constraints is an important topic in topology optimization. In this paper, we introduce an interpretation of stresses as optimization variables, leading to an augmented Lagrangian formulation. This formulation takes two sets of optimization variables, i.e., an auxiliary stress variable per element, in addition to a density...
journal article 2021
document
Hong, Z. (author)
Reducing weight and improving strength of structures have always been major design goals in the aerospace industry since its inception. In particular, strength directly affects the safety and serviceability of an airplane and is therefore of great importance in structural design. Improving the strength of an airframe can effectively increase its...
doctoral thesis 2020
document
Verbart, A. (author), Langelaar, Matthijs (author), van Keulen, A. (author)
In this paper, we propose a unified aggregation and relaxation approach for topology optimization with stress constraints. Following this approach, we first reformulate the original optimization problem with a design-dependent set of constraints into an equivalent optimization problem with a fixed design-independent set of constraints. The next...
journal article 2017
document
Hong, Z. (author), Abdalla, M.M. (author)
Optimisation algorithms used to automatically size structural members commonly involve stress constraints to avoid material failure. Therefore the cost of optimisation grows rapidly as the number of structural members is increased due to the corresponding increase in the number of constraints. In this work, an efficient method for large scale...
conference paper 2016
document
Verbart, A. (author), Langelaar, M. (author), Van Keulen, A. (author)
In this paper, we propose a new method for topology optimization with local stress constraints. In this method, material in which a stress constraint is violated is considered as damaged. Since damaged material will contribute less to the overall performance of the structure, the optimizer will promote a design with a minimal amount of damaged...
journal article 2015
document
Verbart, A. (author)
This thesis contains contributions to the development of topology optimization techniques capable of handling stress constraints. The research that led to these contributions was motivated by the need for topology optimization techniques more suitable for industrial applications. Currently, topology optimization is mainly used in the initial...
doctoral thesis 2015
Searched for: subject%3A%22Stress%255C+constraint%22
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