منابع مشابه
Stress and fatigue constrained topology optimization
This thesis concerns structural optimization in conceptual design stages, for which constraints that are adapted to industrial requirements have been developed for topology optimization problems. The objective of the project has been to identify and solve problems that today prevent structural optimization from being used in a broader sense in the avionic industry; the main focus has been on st...
متن کاملTopology Optimization Method for Dynamic Fatigue Constraints Problem
1. Abstract In this research, a new topology optimization (TO) method was proposed to consider dynamic failure criteria (fatigue) under constant and proportional loading. Despite the great development of the topology optimization, the TO method considering the static or dynamic failure constraints has been regarded as one of the difficult problems. Although the TO method for the static failure ...
متن کاملAn enhanced aggregation method for stress-constrained topology optimization problems
1. Abstract For the topology optimization with local stress constraints on all the elements, conventional “global constraint methods” may introduce high nonlinearity to the global constraint function and cannot adequately control the local stress state. This study aims to develop an enhanced aggregation method that not only effectively reduces the number of constraints in the search process, bu...
متن کاملSupport structure constrained topology optimization for additive manufacturing
Background: With recent advances in additive manufacturing (AM) and topology optimization (TO), there is a significant interest in integrating the two fields [1]. Although TO and AM have flourished independent of each other, there is significant interest today in integrating them for two primary reasons: (1) Designs stemming from TO are geometrically complex, and therefore hard to manufacture u...
متن کاملA hierarchical neighbourhood search method for stress-constrained topology optimization
1. Abstract This paper addresses topology optimization problems defined on discretized linearly elastic continuum structures. The discretized topology optimization problem is modelled as a mixed integer nonlinear program, where the binary design variables indicate material or void in the various finite elements of the discretized structure. We propose a heuristic method, based on a hierarchical...
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ژورنال
عنوان ژورنال: Structural and Multidisciplinary Optimization
سال: 2014
ISSN: 1615-147X,1615-1488
DOI: 10.1007/s00158-014-1054-6