Hélio Emmendoerfer Junior

Hélio Emmendoerfer Junior
University of São Paulo | USP · Department of Mechatronics and Mechanical Systems Engineering

PhD

About

10
Publications
1,393
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142
Citations

Publications

Publications (10)
Article
This work presents a level set-based approach to design multi-material compliant mechanisms subject to local stress constraints. The inclusion of stress constraints can avoid non-realistic hinges formed by a single node or element often present in compliant mechanisms. This study proposes an optimization procedure capable of assigning multiple mate...
Article
Full-text available
In this work, a topology optimization procedure based on the level-set method is applied to the solution of inverse problems for acoustic wave propagation in the time-domain. In this class of inverse problems the presence of obstacles in a background medium must be identified. Obstacles and background are defined by means of a level-set function th...
Article
This work presents a level set framework to solve topology optimization problems subject to local stress constraints considering design-dependent pressure loads. Two technical difficulties are related to this problem. The first one is the local nature of stresses. To deal with this issue, stress constraints are included to the problem by means of a...
Article
Full-text available
This work presents a level set framework to solve the compliance topology optimization problem considering design‐dependent pressure loads. One of the major technical difficulties related to this class of problem is the adequate association between the moving boundary and the pressure acting on it. This difficulty is easily overcome by the level se...
Article
This work focuses the structural topology optimization problem of mass minimization subject to local stress constraints. To this aim, two related issues are addressed. The first one is the successful strategy used to define local stress constraints by means of an Augmented Lagrangian approach. The second, and main contribution of the present paper,...
Conference Paper
Full-text available
Este trabalho apresenta um procedimento para resolver problemas de otimização topológica com restrições de tensão local. As restrições são (uniformemente) distribuídas ao longo do dom´ınio e impostas ao problema de minimização de massa usando uma abordagem Lagrangiano aumentado. Durante a modificação da topologia, baseada em level set, a função par...
Article
The purpose of this work is to present a level set-based approach for the structural topology optimization problem of mass minimization submitted to local stress constraints. The main con-tributions are threefold. First, the inclusion of local stress constraints by means of an augmented Lagrangian approach within the level set context. Second, the...

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