topology optimization – TechConnect Briefs

Topology Optimization of Ultrasonic Transducers for Microsystem and IC Packaging

Kim J-M, Kim J-S, Kim J-M, Kim J-S, Lee S.I., Lim E.J., University of Seoul, KR

In this study, we introduce the method of topology optimization for piezoelectric transducers including ultrasonic tool horns for flip chip or wire bonding. Topology optimization performs an optimization with the objective function regardless of initial [...]

A Novel Topology Optimization Scheme for Micro Electro-Thermo-Mechanical Domains

Motiee M., Khajepour A., Mansour R.R., University of Waterloo, CA

Developing a systematic approach to design optimum Micro-Electro-Mechanical Systems MEMS, recently has received a numerous attention among researchers. Duo to the lack of a systematic design method, typical MEMS devices design procedures encompass trial and [...]

Applications of Topology Optimization in the Design of Micro- and Nanofluidic Systems

Okkels F., Olesen L.H., Bruus H., Technical University of Denmark, DK

The material distribution method in topology optimization was developed in the late 1980ies for stiffness design of mechanical structures, and only recently the first steps have been taken towards implementing the method in fluidics. Topology [...]

Extensions of Spring Model Approach for Continuum-based Topology Optimization of Compliant Mechanisms

Sharma M., Udeshi T., Zyvex Corporation, US

This paper extends spring model approach to include multiple output formulation at arbitrary angles for a given actuation at input port. Parallel assembly for Microsystems could benefit from devices optimized with this formulation. A new [...]

Optimization of a Micro Actuator Plate Using an Evolutionary Algorithm and Simulation Based on Discrete Element Methods

Quinte A., Jakob W., Scherer K.P., Eggert H., Forschungszentrum Karlsruhe, DE

Within the framework of the OMID joint project (1999 - 2002) funded by the BMBF, a universal, fluidically driven actuator plate is being developed in cooperation with the project partners of Bartels Mikrotechnik GmbH and [...]

A New Material Interpolation Scheme for the Topology Optimization of Thermally Actuated Compliant Micromechanisms

Yin L., Ananthasuresh G.K., University of Pennsylvania, US

Thermally actuated compliant micromechanisms are selectively heated elastic continua that take advantage of nonuniform thermal expansion and mechanical leveraging to amplify displacements and forces. These can be designed systematically, as shown in the earlier work [...]

Optimization of Integrated Magnetic Field Sensors

Lienemann J., Greiner A., Korvink J.G., Sigmund O., Albert Ludwig University, DE

We present an optimization strategy for the offset reduction of integrated magnetic field sensors with simultaneous maximization of sensitivity. We use the topology optimization method to automatically find a design with maximal sensitivity for given [...]

On Design of a Backplate Used in a Hearing Aid

Pedersen N.L., Technical University of Denmark, DK

In this work topology optimization is used to optimize the compliance or the eigenfrequencies of prestressed plates. The prestress is accounted for by including the force equivalent to the prestressing and adding the initial stress [...]

Systematic Design and Optimization of Multi-Material, Multi-Degree-of-Freedom Micro Actuators

Sigmund O., Technical University of Denmark, DK

The paper reports an automated method for the synthesis of multi-material, multi-degree-of-freedom micro actuators. The method is based on topology optimization, an iterative computational scheme consisting of alternating finite element analyses, sensitivity analyses and optimal [...]

Systematic Design of Electrothermomechanical Microactuators using Topology Optimization

Sigmund O., Technical University of Denmark, DK

Design methods for MicroElectroMechanical Svstems (MEMS) have, until now, typically been based on intuition, experience and triai and error approaches. A method which may be used to design mechanical and electromechanical coupling parts of MEMS [...]