Feature-based spline optimization in CAD

Weiß, Daniel

doi:10.1007/s00158-010-0521-y

Cited by 9 publications

(6 citation statements)

References 13 publications

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“…For further optimization of the tooth profile Nurbs spline curves (Piegl and Tiller, 1997) can be considered instead of the simple radius curved barrel shape. Weiss (2010) provides an advanced method for CAD-based spline structure optimization to generate automatically the spline geometry during an optimization run. The approach can also be interesting to be included into an automatic tooth profile generation from kinematic simulation.…”

Section: Discussionmentioning

confidence: 99%

Using Kinematic Analysis to Develop a New Tooth System for Gearings With Variable Shaft Angle

Grafinger

2020

Proc. Des. Soc.: Des. Conf.

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The belt units of an omnidirectional treadmill need to be connected for a continuous rotational transmission with variating axes angle. Torus gearing is not appropriate due to kinematic reasons, therefore a crown gearing with cone-shaped teeth is proposed. Parameter analysis on a virtual kinematics model show that depending on the cone angle, overlaps occur at different axis angles. Consequently, the shape of the teeth is modified with tip and foot relief and optimized so that no overlapping of the teeth occurs while a large path of contact is provided.

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Section: Discussionmentioning

confidence: 99%

Using Kinematic Analysis to Develop a New Tooth System for Gearings With Variable Shaft Angle

Grafinger

2020

Proc. Des. Soc.: Des. Conf.

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“…Here only circular hole features are considered, but Eschenauer et al (1994), Chua et al (2010) and Weiss (2010) provide approaches which allow this circular hole feature to take on a new shape during optimization. From (35) the best location for adding a hole feature is where the strain energy, stresses and D T are small compared to the average over the domain.…”

Section: Change In Performance Due To Adding a Holementioning

confidence: 99%

“…This can be considered another type of feature addition, and the shape can then be optimized based on the positions of the control points as shown by Eschenauer et al (1994), Chua et al (2010) and Weiss (2010).…”

Section: Optimization Based On Cad Featuresmentioning

confidence: 99%

“…This paper addresses the question of how to proceed when the CAD model in its current form has been optimized with respect to the current set of feature parameters, and the parametric effectiveness of the model is low, so that in order for further performance improvement to be realized new features need to be added to the model. Weiss (2010) poses the question of whether structural feature creation for optimization in CAD is possible, and this paper attempts to contribute to this goal. Due to the nature of the features available in a modern CAD system, feature addition may be considered as either shape optimization or topology optimization, depending on the feature added.…”

Section: Introductionmentioning

confidence: 99%

“…Topology optimization, reviewed by Eschenauer and Olhoff (2001), occurs where the addition of a feature will cause the genus of the model to change by inserting a hole or void into the domain. Weiss (2010) presented an approach for adding extra design parameters to a feature based CAD model through the addition of extra control points for spline curves in the model. The approach proposed there is in some respects similar to the bubble method demonstrated by Eschenauer et al (1994), where new "bubble" features were added to a 2D domain, and then the position and shape of the new bubble feature were optimized.…”

Section: Introductionmentioning

confidence: 99%

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Strategies for adding features to CAD models in order to optimize performance

Robinson

Armstrong

Chua

2012

Struct Multidisc Optim

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This paper presents an approach which enables new parameters to be added to a CAD model for optimization purposes. It aims to remove a common roadblock to CAD based optimization, where the parameterization of the model does not offer the shape sufficient flexibility for a truly optimized shape to be created. A technique has been developed which uses adjoint based sensitivity maps to predict the sensitivity of performance to the addition to a model of four different feature types, allowing the feature providing the greatest benefit to be selected. The optimum position to add the feature is also discussed. It is anticipated that the approach could be used to iteratively add features to a model, providing greater flexibility to the shape of the model, and allowing the newly-added parameters to be used as design variables in a subsequent shape optimization.

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Recent Advances of Intelligent Optimization Algorithm in Manufacturing

Tao

Laili

Zhang

2014

Springer Series in Advanced Manufacturing

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Due to its good versatility and independence, intelligent optimization algorithm has largely shortened the time of decision-making in large-scale optimization problems of manufacture. However, lower searching time often conflicts with the searching accuracy in most cases. To improve the problem solving capability, research in intelligent optimization algorithm based on different domain characteristics never stopped. From the view of manufacturing, this chapter classified and comprehensively analyzed all kinds of manufacturing optimization problems and their general methods, illustrated the application features and challenges of intelligent optimization algorithm in manufacturing, and summarized the development needs and trends of intelligent optimization algorithm in the field of manufacturing system.

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Feature-based spline optimization in CAD

Cited by 9 publications

References 13 publications

Using Kinematic Analysis to Develop a New Tooth System for Gearings With Variable Shaft Angle

Using Kinematic Analysis to Develop a New Tooth System for Gearings With Variable Shaft Angle

Strategies for adding features to CAD models in order to optimize performance

Recent Advances of Intelligent Optimization Algorithm in Manufacturing

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