Computer-Aided Design

Designing the layout for complex electromechanical products involves the challenging task of automatically laying out cables. This challenge is particularly pronounced in the case of branch cables, which are more intricate due to their multiple ...

• Design of a polynomial-time dynamic programming algorithm for branching cable layout.
• Consider constraints like wall adherence, gray areas, and minimum bend radius.
• Implementation on the UG platform to fully realize automatic ...

We present a learning based framework for mesh quality improvement on unstructured triangular and quadrilateral meshes. Our model learns to improve mesh quality according to a prescribed objective function purely via self-play reinforcement ...

• Operations that improve mesh regularity are learned through self-play reinforcement learning.
• Algorithms to represent local mesh topology are prescribed.
• A general algorithm is provided with application to triangular and ...

Least-squares progressive iterative approximation (LSPIA) is an effective tool for fitting data points with curves and surfaces in CAD/CAM, due to its intuitive geometric meaning and its suitability for handling mass data. However, the classic ...

• DLSPIA is presented for fitting data with curves and surfaces.
• Generated sequence converges to the least-squares result within finite iterations.
• Distributed computing of DLSPIA can effectively reduce the amount of computation.

In this study, we present a novel method for modeling the canopy surface of an umbrella. Our approach involves representing the area between the ribs on the canopy as a trimmed bilinear patch. Furthermore, we conduct an in-depth exploration of ...

• A canopy surface between ribs is represented as a trimmed bilinear patch.
• A method to unfold the canopy surface onto a plane is proposed.
• Parameters that determine the shape of the canopy surface are defined.
• An umbrella was ...

The digitalization of manufacturing processes and recent trends, such as the Industrial Metaverse, are continuously increasing in adoption in various critical industries, resulting in a surging demand for 3D CAD models and their exchange. ...

• A compact geometry-based approach for creating 3D perceptual hashes.
• Evaluation of tamper resistance against various 3D mesh manipulations.
• Evaluation of rotation and scale resistance against state-of-the-art methods.
• ...

Owing to the rapid development in additive manufacturing, the potential to fabricate intricate structures has become a reality, emphasizing the importance of designing structures conducive to additive manufacturing processes. A crucial ...

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• Analytical conditions for non-self-supporting constraints are derived based on the implicit B-spline representation.
• Several acceleration techniques are employed to achieve high computational performance.
• The self-supporting ...

Cardiac simulators can assist in the diagnosis of heart disease and enhance human understanding of this leading cause of mortality. The coupling of multiphysics, such as electrophysiology and active–passive mechanics, in the simulation of the ...

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• A coupling model converting active–passive dynamics into multiphysics constraints.
• Replicating intricate cardiac phenomena: 3D spiral waves and rhythmic contractions.
• Advancing real-time computation with comparable accuracy to ...

Methods that use neural networks for synthesizing 3D shapes in the form of a part-based representation have been introduced over the last few years. These methods represent shapes as a graph or hierarchy of parts and enable a variety of ...

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• A comparative study of multimodal generative models for suggesting diverse parts.
• A demonstration of the best-performing models for providing part suggestions.
• The first part-based synthesis method allowing regenerating diverse ...

Optimizing heterogeneous elastic material distribution on a 3D part to achieve desired deformation behavior is an important task in computer-aided design and additive manufacturing. This paper presents a solution to this problem, which involves ...

• A geometric deformation-based design is incorporated into the FEM-based optimization.
• An L0-formulation is proposed for determining the material distribution from a given set of base materials.
• The adjoint method is used to derive ...

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